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* Multipath-tools errors
@ 2007-08-10 14:50 S. J. van Harmelen
  2007-08-16 17:26 ` Chandra Seetharaman
  0 siblings, 1 reply; 7+ messages in thread
From: S. J. van Harmelen @ 2007-08-10 14:50 UTC (permalink / raw)
  To: dm-devel

Oke, got a bit further...

I now understand how to use the disks. Only thing thats not going oke is
that I get these errors constantly (while formatting):

end_request: I/O error, dev sdf, sector 30408704
end_request: I/O error, dev sdf, sector 30670848
end_request: I/O error, dev sdf, sector 30932992
end_request: I/O error, dev sdf, sector 31195136
end_request: I/O error, dev sdf, sector 31457280

or (while editting a file):

end_request: I/O error, dev sdc, sector 966656
device-mapper: multipath: Failing path 8:32.
end_request: I/O error, dev sdc, sector 966720
device-mapper: multipath: Failing path 8:32.
end_request: I/O error, dev sdc, sector 96665

And the device seems very slow...

And also stil having this error: "error calling out mpath_prio_rdac"

Any tips, pointers?

Sander

-------- Forwarded Message --------
From: S. J. van Harmelen <svanharmelen@xillan.nl>
To: dm-devel@redhat.com
Subject: Re: Multipath-tools
Date: Fri, 10 Aug 2007 11:47:01 +0200

Hi again,

Seem to have found the solution for the first question. Got
multipath-tools up and running now :)

But please do answer the others questions if you have a minute to
spare...

Also I'm seeing "error calling out mpath_prio_rdac" when starting
multipathd?! Any word on that one?

Regards,

Sander



On Fri, 2007-08-10 at 10:27 +0200, S. J. van Harmelen wrote:
> Hey guys,
> 
> Sorry to bother you, but I have a question I think you can answer. I
> also send this message to Christophe, but I don't know how long he takes
> to respond. I'm trying to set up a Dell NX1950 which has an RDAC MD300
> array connected with linux.
> 
> Now I got all thinks working, but the RDAC driver. I'm trying to use the
> opensource multipath-tools (which I want to compile myself), but I have
> some questions about it:
> 
> 1) While compiling I get an error saying: "/usr/bin/ld: cannot find
> -ldevmapper" Can you tell me what I can do to fix this error?
> 
> 2) Can you tell me if there is a mailinglist for the multipath-tools?
> 
> 3) Can you point me to some documentation about configuring the
> multipath-tools with the new RDAC path checker?
> 
> Thanks very much for your time!
> 
> Kind regards,
> 
> Sander van Harmelen

^ permalink raw reply	[flat|nested] 7+ messages in thread
* Re: Multipath-tools errors
  2007-08-10 14:50 Multipath-tools errors S. J. van Harmelen
@ 2007-08-16 17:26 ` Chandra Seetharaman
  2007-08-16 17:58   ` S. J. van Harmelen
  0 siblings, 1 reply; 7+ messages in thread
From: Chandra Seetharaman @ 2007-08-16 17:26 UTC (permalink / raw)
  To: device-mapper development

First off, the "mpath_prio_rdac" is the path checker for the lsi engenio
controller. Is the Dell MD300 based on that controller ?

If it is _not_, then you should _not_ be using mpath_prio_rdac.

If it is, read on.

You need to use the hardware handler for the same controller, you can
setup your multipath.conf to use the "rdac" hardware handler.

Here is how your multipath.conf should look like:
-----------
devices {
        device {
                vendor                  "$vendor_name"
                product                 "$product_name"
                hardware_handler        "1 rdac"
                path_checker            rdac
                path_grouping_policy    group_by_prio
                prio_callout            "/sbin/mpath_prio_rdac /dev/%n"
        }
}
-----------

Note: replace $vendor_name and $product_name with appropriate vendor and
product information for the storage.

Hardware handler for rdac is available only in 2.6.23-rc1 and onwards
(if you are not using this version, do let me know which version of the
kernel you are using, even if it is in distro).

Where did you get the multipath-tools from ? From Christophe's website
or any distro(RedHat/SuSE) ?

And, as Malahal pointed, make sure you have /sbin/mpath_prio_rdac
available and is an executable.

Hope this helps,

chandra
On Fri, 2007-08-10 at 16:50 +0200, S. J. van Harmelen wrote:
> Oke, got a bit further...
> 
> I now understand how to use the disks. Only thing thats not going oke is
> that I get these errors constantly (while formatting):
> 
> end_request: I/O error, dev sdf, sector 30408704
> end_request: I/O error, dev sdf, sector 30670848
> end_request: I/O error, dev sdf, sector 30932992
> end_request: I/O error, dev sdf, sector 31195136
> end_request: I/O error, dev sdf, sector 31457280
> 
> or (while editting a file):
> 
> end_request: I/O error, dev sdc, sector 966656
> device-mapper: multipath: Failing path 8:32.
> end_request: I/O error, dev sdc, sector 966720
> device-mapper: multipath: Failing path 8:32.
> end_request: I/O error, dev sdc, sector 96665
> 
> And the device seems very slow...
> 
> And also stil having this error: "error calling out mpath_prio_rdac"
> 
> Any tips, pointers?
> 
> Sander
> 
> -------- Forwarded Message --------
> From: S. J. van Harmelen <svanharmelen@xillan.nl>
> To: dm-devel@redhat.com
> Subject: Re: Multipath-tools
> Date: Fri, 10 Aug 2007 11:47:01 +0200
> 
> Hi again,
> 
> Seem to have found the solution for the first question. Got
> multipath-tools up and running now :)
> 
> But please do answer the others questions if you have a minute to
> spare...
> 
> Also I'm seeing "error calling out mpath_prio_rdac" when starting
> multipathd?! Any word on that one?
> 
> Regards,
> 
> Sander
> 
> 
> 
> On Fri, 2007-08-10 at 10:27 +0200, S. J. van Harmelen wrote:
> > Hey guys,
> > 
> > Sorry to bother you, but I have a question I think you can answer. I
> > also send this message to Christophe, but I don't know how long he takes
> > to respond. I'm trying to set up a Dell NX1950 which has an RDAC MD300
> > array connected with linux.
> > 
> > Now I got all thinks working, but the RDAC driver. I'm trying to use the
> > opensource multipath-tools (which I want to compile myself), but I have
> > some questions about it:
> > 
> > 1) While compiling I get an error saying: "/usr/bin/ld: cannot find
> > -ldevmapper" Can you tell me what I can do to fix this error?
> > 
> > 2) Can you tell me if there is a mailinglist for the multipath-tools?
> > 
> > 3) Can you point me to some documentation about configuring the
> > multipath-tools with the new RDAC path checker?
> > 
> > Thanks very much for your time!
> > 
> > Kind regards,
> > 
> > Sander van Harmelen
> 
> --
> dm-devel mailing list
> dm-devel@redhat.com
> https://www.redhat.com/mailman/listinfo/dm-devel
-- 

----------------------------------------------------------------------
    Chandra Seetharaman               | Be careful what you choose....
              - sekharan@us.ibm.com   |      .......you may get it.
----------------------------------------------------------------------

^ permalink raw reply	[flat|nested] 7+ messages in thread
* Re: Multipath-tools errors
  2007-08-16 17:26 ` Chandra Seetharaman
@ 2007-08-16 17:58   ` S. J. van Harmelen
  2007-08-16 18:23     ` Chandra Seetharaman
  0 siblings, 1 reply; 7+ messages in thread
From: S. J. van Harmelen @ 2007-08-16 17:58 UTC (permalink / raw)
  To: sekharan, device-mapper development

Hi Chandra,

Thanks for your reply! As far as I know it does use a LSI Engenio. I
asked Dell if they can confirm this, but I didn't get any reply yet.
Will get back with the answer as soon as I get it.

Besides that it seems to be working now. I don't have any errors anymore
and it's not as slow as before. It's now doing something like 120M/sec,
but don't know if thats good or not (don't know how fast this device
should be)...

I did leave out the hardware_handler line because of the error it gives.
But I understand that is because of my kernel? I'm using the package
from Christophe's website version 0.4.8 on a Debian Etch 64bit machine
with a 2.6.22.2 kernel.

I quess I need the hardware_handler to make it work as it should? Al
true it sees all paths and says that both active. Where one is
active/ready and the other is active/ghost. 

Anything I can do about this? 

Sander






On Thu, 2007-08-16 at 10:26 -0700, Chandra Seetharaman wrote:
> First off, the "mpath_prio_rdac" is the path checker for the lsi engenio
> controller. Is the Dell MD300 based on that controller ?
> 
> If it is _not_, then you should _not_ be using mpath_prio_rdac.
> 
> If it is, read on.
> 
> You need to use the hardware handler for the same controller, you can
> setup your multipath.conf to use the "rdac" hardware handler.
> 
> Here is how your multipath.conf should look like:
> -----------
> devices {
>         device {
>                 vendor                  "$vendor_name"
>                 product                 "$product_name"
>                 hardware_handler        "1 rdac"
>                 path_checker            rdac
>                 path_grouping_policy    group_by_prio
>                 prio_callout            "/sbin/mpath_prio_rdac /dev/%n"
>         }
> }
> -----------
> 
> Note: replace $vendor_name and $product_name with appropriate vendor and
> product information for the storage.
> 
> Hardware handler for rdac is available only in 2.6.23-rc1 and onwards
> (if you are not using this version, do let me know which version of the
> kernel you are using, even if it is in distro).
> 
> Where did you get the multipath-tools from ? From Christophe's website
> or any distro(RedHat/SuSE) ?
> 
> And, as Malahal pointed, make sure you have /sbin/mpath_prio_rdac
> available and is an executable.
> 
> Hope this helps,
> 
> chandra
> On Fri, 2007-08-10 at 16:50 +0200, S. J. van Harmelen wrote:
> > Oke, got a bit further...
> > 
> > I now understand how to use the disks. Only thing thats not going oke is
> > that I get these errors constantly (while formatting):
> > 
> > end_request: I/O error, dev sdf, sector 30408704
> > end_request: I/O error, dev sdf, sector 30670848
> > end_request: I/O error, dev sdf, sector 30932992
> > end_request: I/O error, dev sdf, sector 31195136
> > end_request: I/O error, dev sdf, sector 31457280
> > 
> > or (while editting a file):
> > 
> > end_request: I/O error, dev sdc, sector 966656
> > device-mapper: multipath: Failing path 8:32.
> > end_request: I/O error, dev sdc, sector 966720
> > device-mapper: multipath: Failing path 8:32.
> > end_request: I/O error, dev sdc, sector 96665
> > 
> > And the device seems very slow...
> > 
> > And also stil having this error: "error calling out mpath_prio_rdac"
> > 
> > Any tips, pointers?
> > 
> > Sander
> > 
> > -------- Forwarded Message --------
> > From: S. J. van Harmelen <svanharmelen@xillan.nl>
> > To: dm-devel@redhat.com
> > Subject: Re: Multipath-tools
> > Date: Fri, 10 Aug 2007 11:47:01 +0200
> > 
> > Hi again,
> > 
> > Seem to have found the solution for the first question. Got
> > multipath-tools up and running now :)
> > 
> > But please do answer the others questions if you have a minute to
> > spare...
> > 
> > Also I'm seeing "error calling out mpath_prio_rdac" when starting
> > multipathd?! Any word on that one?
> > 
> > Regards,
> > 
> > Sander
> > 
> > 
> > 
> > On Fri, 2007-08-10 at 10:27 +0200, S. J. van Harmelen wrote:
> > > Hey guys,
> > > 
> > > Sorry to bother you, but I have a question I think you can answer. I
> > > also send this message to Christophe, but I don't know how long he takes
> > > to respond. I'm trying to set up a Dell NX1950 which has an RDAC MD300
> > > array connected with linux.
> > > 
> > > Now I got all thinks working, but the RDAC driver. I'm trying to use the
> > > opensource multipath-tools (which I want to compile myself), but I have
> > > some questions about it:
> > > 
> > > 1) While compiling I get an error saying: "/usr/bin/ld: cannot find
> > > -ldevmapper" Can you tell me what I can do to fix this error?
> > > 
> > > 2) Can you tell me if there is a mailinglist for the multipath-tools?
> > > 
> > > 3) Can you point me to some documentation about configuring the
> > > multipath-tools with the new RDAC path checker?
> > > 
> > > Thanks very much for your time!
> > > 
> > > Kind regards,
> > > 
> > > Sander van Harmelen
> > 
> > --
> > dm-devel mailing list
> > dm-devel@redhat.com
> > https://www.redhat.com/mailman/listinfo/dm-devel
> -- 
> 
> ----------------------------------------------------------------------
>     Chandra Seetharaman               | Be careful what you choose....
>               - sekharan@us.ibm.com   |      .......you may get it.
> ----------------------------------------------------------------------
> 
> 
> --
> dm-devel mailing list
> dm-devel@redhat.com
> https://www.redhat.com/mailman/listinfo/dm-devel

^ permalink raw reply	[flat|nested] 7+ messages in thread
* Re: Multipath-tools errors
  2007-08-16 17:58   ` S. J. van Harmelen
@ 2007-08-16 18:23     ` Chandra Seetharaman
  2007-08-16 18:36       ` S. J. van Harmelen
  0 siblings, 1 reply; 7+ messages in thread
From: Chandra Seetharaman @ 2007-08-16 18:23 UTC (permalink / raw)
  To: S. J. van Harmelen; +Cc: device-mapper development

On Thu, 2007-08-16 at 19:58 +0200, S. J. van Harmelen wrote:
> Hi Chandra,
> 
> Thanks for your reply! As far as I know it does use a LSI Engenio. I
> asked Dell if they can confirm this, but I didn't get any reply yet.
> Will get back with the answer as soon as I get it.
> 
My reply below is based on the assumption that it does use LSI Engenio.

> Besides that it seems to be working now. I don't have any errors anymore
> and it's not as slow as before. It's now doing something like 120M/sec,
> but don't know if thats good or not (don't know how fast this device
> should be)...
> 
> I did leave out the hardware_handler line because of the error it gives.
> But I understand that is because of my kernel? I'm using the package
> from Christophe's website version 0.4.8 on a Debian Etch 64bit machine
> with a 2.6.22.2 kernel.

Yes, you need a 2.6.23-rc1 (or upwards) kernel to have the rdac hardware
handler support.
> 
> I quess I need the hardware_handler to make it work as it should? Al

Yes, without the hardware handler, path failover/failback will not work.

> true it sees all paths and says that both active. Where one is
> active/ready and the other is active/ghost. 
> 
> Anything I can do about this? 

I do not understand the problem you are mentioning here. Will be easier
to follow if you can copy the o/p of "multipath -ll" and explain your
issue w.r.t that.

Also, attaching your multipath.conf would also be useful.

chandra
> 
> Sander
> 
> 
> 
> 
> 
> 
> On Thu, 2007-08-16 at 10:26 -0700, Chandra Seetharaman wrote:
> > First off, the "mpath_prio_rdac" is the path checker for the lsi engenio
> > controller. Is the Dell MD300 based on that controller ?
> > 
> > If it is _not_, then you should _not_ be using mpath_prio_rdac.
> > 
> > If it is, read on.
> > 
> > You need to use the hardware handler for the same controller, you can
> > setup your multipath.conf to use the "rdac" hardware handler.
> > 
> > Here is how your multipath.conf should look like:
> > -----------
> > devices {
> >         device {
> >                 vendor                  "$vendor_name"
> >                 product                 "$product_name"
> >                 hardware_handler        "1 rdac"
> >                 path_checker            rdac
> >                 path_grouping_policy    group_by_prio
> >                 prio_callout            "/sbin/mpath_prio_rdac /dev/%n"
> >         }
> > }
> > -----------
> > 
> > Note: replace $vendor_name and $product_name with appropriate vendor and
> > product information for the storage.
> > 
> > Hardware handler for rdac is available only in 2.6.23-rc1 and onwards
> > (if you are not using this version, do let me know which version of the
> > kernel you are using, even if it is in distro).
> > 
> > Where did you get the multipath-tools from ? From Christophe's website
> > or any distro(RedHat/SuSE) ?
> > 
> > And, as Malahal pointed, make sure you have /sbin/mpath_prio_rdac
> > available and is an executable.
> > 
> > Hope this helps,
> > 
> > chandra
> > On Fri, 2007-08-10 at 16:50 +0200, S. J. van Harmelen wrote:
> > > Oke, got a bit further...
> > > 
> > > I now understand how to use the disks. Only thing thats not going oke is
> > > that I get these errors constantly (while formatting):
> > > 
> > > end_request: I/O error, dev sdf, sector 30408704
> > > end_request: I/O error, dev sdf, sector 30670848
> > > end_request: I/O error, dev sdf, sector 30932992
> > > end_request: I/O error, dev sdf, sector 31195136
> > > end_request: I/O error, dev sdf, sector 31457280
> > > 
> > > or (while editting a file):
> > > 
> > > end_request: I/O error, dev sdc, sector 966656
> > > device-mapper: multipath: Failing path 8:32.
> > > end_request: I/O error, dev sdc, sector 966720
> > > device-mapper: multipath: Failing path 8:32.
> > > end_request: I/O error, dev sdc, sector 96665
> > > 
> > > And the device seems very slow...
> > > 
> > > And also stil having this error: "error calling out mpath_prio_rdac"
> > > 
> > > Any tips, pointers?
> > > 
> > > Sander
> > > 
> > > -------- Forwarded Message --------
> > > From: S. J. van Harmelen <svanharmelen@xillan.nl>
> > > To: dm-devel@redhat.com
> > > Subject: Re: Multipath-tools
> > > Date: Fri, 10 Aug 2007 11:47:01 +0200
> > > 
> > > Hi again,
> > > 
> > > Seem to have found the solution for the first question. Got
> > > multipath-tools up and running now :)
> > > 
> > > But please do answer the others questions if you have a minute to
> > > spare...
> > > 
> > > Also I'm seeing "error calling out mpath_prio_rdac" when starting
> > > multipathd?! Any word on that one?
> > > 
> > > Regards,
> > > 
> > > Sander
> > > 
> > > 
> > > 
> > > On Fri, 2007-08-10 at 10:27 +0200, S. J. van Harmelen wrote:
> > > > Hey guys,
> > > > 
> > > > Sorry to bother you, but I have a question I think you can answer. I
> > > > also send this message to Christophe, but I don't know how long he takes
> > > > to respond. I'm trying to set up a Dell NX1950 which has an RDAC MD300
> > > > array connected with linux.
> > > > 
> > > > Now I got all thinks working, but the RDAC driver. I'm trying to use the
> > > > opensource multipath-tools (which I want to compile myself), but I have
> > > > some questions about it:
> > > > 
> > > > 1) While compiling I get an error saying: "/usr/bin/ld: cannot find
> > > > -ldevmapper" Can you tell me what I can do to fix this error?
> > > > 
> > > > 2) Can you tell me if there is a mailinglist for the multipath-tools?
> > > > 
> > > > 3) Can you point me to some documentation about configuring the
> > > > multipath-tools with the new RDAC path checker?
> > > > 
> > > > Thanks very much for your time!
> > > > 
> > > > Kind regards,
> > > > 
> > > > Sander van Harmelen
> > > 
> > > --
> > > dm-devel mailing list
> > > dm-devel@redhat.com
> > > https://www.redhat.com/mailman/listinfo/dm-devel
> > -- 
> > 
> > ----------------------------------------------------------------------
> >     Chandra Seetharaman               | Be careful what you choose....
> >               - sekharan@us.ibm.com   |      .......you may get it.
> > ----------------------------------------------------------------------
> > 
> > 
> > --
> > dm-devel mailing list
> > dm-devel@redhat.com
> > https://www.redhat.com/mailman/listinfo/dm-devel
> 
-- 

----------------------------------------------------------------------
    Chandra Seetharaman               | Be careful what you choose....
              - sekharan@us.ibm.com   |      .......you may get it.
----------------------------------------------------------------------

^ permalink raw reply	[flat|nested] 7+ messages in thread
* Re: Multipath-tools errors
  2007-08-16 18:23     ` Chandra Seetharaman
@ 2007-08-16 18:36       ` S. J. van Harmelen
  2007-08-16 19:05         ` Chandra Seetharaman
  0 siblings, 1 reply; 7+ messages in thread
From: S. J. van Harmelen @ 2007-08-16 18:36 UTC (permalink / raw)
  To: sekharan; +Cc: device-mapper development

[-- Attachment #1: Type: text/plain, Size: 8039 bytes --]

In my last lines I meant that it looked okay:

root@storage:~# multipath -ll
backup (360019b9000d7e1100000444b46be82c4) dm-0 DELL    ,MD3000        
[size=200G][features=0][hwhandler=0]
\_ round-robin 0 [prio=3][active]
 \_ 1:0:1:2 sdg 8:96  [active][ready]
\_ round-robin 0 [prio=0][enabled]
 \_ 1:0:0:2 sdd 8:48  [active][ghost]
vmware (360019b9000d7e1100000444846be81b6) dm-2 DELL    ,MD3000        
[size=200G][features=0][hwhandler=0]
\_ round-robin 0 [prio=3][active]
 \_ 1:0:0:0 sdb 8:16  [active][ready]
\_ round-robin 0 [prio=0][enabled]
 \_ 1:0:1:0 sde 8:64  [active][ghost]
data (360019b9000d7ddab0000493846be81e5) dm-1 DELL    ,MD3000        
[size=200G][features=0][hwhandler=0]
\_ round-robin 0 [prio=3][active]
 \_ 1:0:1:1 sdf 8:80  [active][ready]
\_ round-robin 0 [prio=0][enabled]
 \_ 1:0:0:1 sdc 8:32  [active][ghost]

As you can see it show's all paths correctly and also show's them as
active/ready and active/ghost. Attached is my multipath.conf b.t.w.

But I understand path failover/failback will not work without without
the hardware handler :( I am planning this machine for a production
environment, so I quess I have to wait till 2.6.23.1 comes out.

Any idea when that should be? Or are there any kernel patches I could
use for 2.6.22.2? Or does it not work that way?

Thanks,

Sander




On Thu, 2007-08-16 at 11:23 -0700, Chandra Seetharaman wrote:
> On Thu, 2007-08-16 at 19:58 +0200, S. J. van Harmelen wrote:
> > Hi Chandra,
> > 
> > Thanks for your reply! As far as I know it does use a LSI Engenio. I
> > asked Dell if they can confirm this, but I didn't get any reply yet.
> > Will get back with the answer as soon as I get it.
> > 
> My reply below is based on the assumption that it does use LSI Engenio.
> 
> > Besides that it seems to be working now. I don't have any errors anymore
> > and it's not as slow as before. It's now doing something like 120M/sec,
> > but don't know if thats good or not (don't know how fast this device
> > should be)...
> > 
> > I did leave out the hardware_handler line because of the error it gives.
> > But I understand that is because of my kernel? I'm using the package
> > from Christophe's website version 0.4.8 on a Debian Etch 64bit machine
> > with a 2.6.22.2 kernel.
> 
> Yes, you need a 2.6.23-rc1 (or upwards) kernel to have the rdac hardware
> handler support.
> > 
> > I quess I need the hardware_handler to make it work as it should? Al
> 
> Yes, without the hardware handler, path failover/failback will not work.
> 
> > true it sees all paths and says that both active. Where one is
> > active/ready and the other is active/ghost. 
> > 
> > Anything I can do about this? 
> 
> I do not understand the problem you are mentioning here. Will be easier
> to follow if you can copy the o/p of "multipath -ll" and explain your
> issue w.r.t that.
> 
> Also, attaching your multipath.conf would also be useful.
> 
> chandra
> > 
> > Sander
> > 
> > 
> > 
> > 
> > 
> > 
> > On Thu, 2007-08-16 at 10:26 -0700, Chandra Seetharaman wrote:
> > > First off, the "mpath_prio_rdac" is the path checker for the lsi engenio
> > > controller. Is the Dell MD300 based on that controller ?
> > > 
> > > If it is _not_, then you should _not_ be using mpath_prio_rdac.
> > > 
> > > If it is, read on.
> > > 
> > > You need to use the hardware handler for the same controller, you can
> > > setup your multipath.conf to use the "rdac" hardware handler.
> > > 
> > > Here is how your multipath.conf should look like:
> > > -----------
> > > devices {
> > >         device {
> > >                 vendor                  "$vendor_name"
> > >                 product                 "$product_name"
> > >                 hardware_handler        "1 rdac"
> > >                 path_checker            rdac
> > >                 path_grouping_policy    group_by_prio
> > >                 prio_callout            "/sbin/mpath_prio_rdac /dev/%n"
> > >         }
> > > }
> > > -----------
> > > 
> > > Note: replace $vendor_name and $product_name with appropriate vendor and
> > > product information for the storage.
> > > 
> > > Hardware handler for rdac is available only in 2.6.23-rc1 and onwards
> > > (if you are not using this version, do let me know which version of the
> > > kernel you are using, even if it is in distro).
> > > 
> > > Where did you get the multipath-tools from ? From Christophe's website
> > > or any distro(RedHat/SuSE) ?
> > > 
> > > And, as Malahal pointed, make sure you have /sbin/mpath_prio_rdac
> > > available and is an executable.
> > > 
> > > Hope this helps,
> > > 
> > > chandra
> > > On Fri, 2007-08-10 at 16:50 +0200, S. J. van Harmelen wrote:
> > > > Oke, got a bit further...
> > > > 
> > > > I now understand how to use the disks. Only thing thats not going oke is
> > > > that I get these errors constantly (while formatting):
> > > > 
> > > > end_request: I/O error, dev sdf, sector 30408704
> > > > end_request: I/O error, dev sdf, sector 30670848
> > > > end_request: I/O error, dev sdf, sector 30932992
> > > > end_request: I/O error, dev sdf, sector 31195136
> > > > end_request: I/O error, dev sdf, sector 31457280
> > > > 
> > > > or (while editting a file):
> > > > 
> > > > end_request: I/O error, dev sdc, sector 966656
> > > > device-mapper: multipath: Failing path 8:32.
> > > > end_request: I/O error, dev sdc, sector 966720
> > > > device-mapper: multipath: Failing path 8:32.
> > > > end_request: I/O error, dev sdc, sector 96665
> > > > 
> > > > And the device seems very slow...
> > > > 
> > > > And also stil having this error: "error calling out mpath_prio_rdac"
> > > > 
> > > > Any tips, pointers?
> > > > 
> > > > Sander
> > > > 
> > > > -------- Forwarded Message --------
> > > > From: S. J. van Harmelen <svanharmelen@xillan.nl>
> > > > To: dm-devel@redhat.com
> > > > Subject: Re: Multipath-tools
> > > > Date: Fri, 10 Aug 2007 11:47:01 +0200
> > > > 
> > > > Hi again,
> > > > 
> > > > Seem to have found the solution for the first question. Got
> > > > multipath-tools up and running now :)
> > > > 
> > > > But please do answer the others questions if you have a minute to
> > > > spare...
> > > > 
> > > > Also I'm seeing "error calling out mpath_prio_rdac" when starting
> > > > multipathd?! Any word on that one?
> > > > 
> > > > Regards,
> > > > 
> > > > Sander
> > > > 
> > > > 
> > > > 
> > > > On Fri, 2007-08-10 at 10:27 +0200, S. J. van Harmelen wrote:
> > > > > Hey guys,
> > > > > 
> > > > > Sorry to bother you, but I have a question I think you can answer. I
> > > > > also send this message to Christophe, but I don't know how long he takes
> > > > > to respond. I'm trying to set up a Dell NX1950 which has an RDAC MD300
> > > > > array connected with linux.
> > > > > 
> > > > > Now I got all thinks working, but the RDAC driver. I'm trying to use the
> > > > > opensource multipath-tools (which I want to compile myself), but I have
> > > > > some questions about it:
> > > > > 
> > > > > 1) While compiling I get an error saying: "/usr/bin/ld: cannot find
> > > > > -ldevmapper" Can you tell me what I can do to fix this error?
> > > > > 
> > > > > 2) Can you tell me if there is a mailinglist for the multipath-tools?
> > > > > 
> > > > > 3) Can you point me to some documentation about configuring the
> > > > > multipath-tools with the new RDAC path checker?
> > > > > 
> > > > > Thanks very much for your time!
> > > > > 
> > > > > Kind regards,
> > > > > 
> > > > > Sander van Harmelen
> > > > 
> > > > --
> > > > dm-devel mailing list
> > > > dm-devel@redhat.com
> > > > https://www.redhat.com/mailman/listinfo/dm-devel
> > > -- 
> > > 
> > > ----------------------------------------------------------------------
> > >     Chandra Seetharaman               | Be careful what you choose....
> > >               - sekharan@us.ibm.com   |      .......you may get it.
> > > ----------------------------------------------------------------------
> > > 
> > > 
> > > --
> > > dm-devel mailing list
> > > dm-devel@redhat.com
> > > https://www.redhat.com/mailman/listinfo/dm-devel
> > 

[-- Attachment #2: multipath.conf --]
[-- Type: text/plain, Size: 1184 bytes --]

defaults {
        polling_interval        1
        udev_dir                /dev
}

blacklist {
        wwid 360019b90d736e1000e1c348acb03df8d
        devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
        devnode "^hd[a-z][[0-9]*]"
}

multipaths {
        multipath {
                wwid            360019b9000d7e1100000444846be81b6
                alias           vmware
        }
        multipath {
                wwid            360019b9000d7ddab0000493846be81e5
                alias           data
        }
        multipath {
                wwid            360019b9000d7e1100000444b46be82c4
                alias           backup
        }

}

devices {
        device {
                vendor                  "DELL"
                product                 "MD3000"
                getuid_callout          "/sbin/scsi_id -g -u -s /block/%n"
                prio_callout            "/sbin/mpath_prio_rdac /dev/%n"
                features                "0"
                #hardware_handler        "1 rdac"
                path_grouping_policy    group_by_prio
                failback                manual
                path_checker            rdac
        }
}

[-- Attachment #3: Type: text/plain, Size: 0 bytes --]



^ permalink raw reply	[flat|nested] 7+ messages in thread
* Re: Multipath-tools errors
  2007-08-16 18:36       ` S. J. van Harmelen
@ 2007-08-16 19:05         ` Chandra Seetharaman
  2007-08-16 19:21           ` S. J. van Harmelen
  0 siblings, 1 reply; 7+ messages in thread
From: Chandra Seetharaman @ 2007-08-16 19:05 UTC (permalink / raw)
  To: S. J. van Harmelen; +Cc: device-mapper development

On Thu, 2007-08-16 at 20:36 +0200, S. J. van Harmelen wrote:
> In my last lines I meant that it looked okay:
> 
> root@storage:~# multipath -ll
> backup (360019b9000d7e1100000444b46be82c4) dm-0 DELL    ,MD3000        
> [size=200G][features=0][hwhandler=0]
> \_ round-robin 0 [prio=3][active]
>  \_ 1:0:1:2 sdg 8:96  [active][ready]
> \_ round-robin 0 [prio=0][enabled]
>  \_ 1:0:0:2 sdd 8:48  [active][ghost]
> vmware (360019b9000d7e1100000444846be81b6) dm-2 DELL    ,MD3000        
> [size=200G][features=0][hwhandler=0]
> \_ round-robin 0 [prio=3][active]
>  \_ 1:0:0:0 sdb 8:16  [active][ready]
> \_ round-robin 0 [prio=0][enabled]
>  \_ 1:0:1:0 sde 8:64  [active][ghost]
> data (360019b9000d7ddab0000493846be81e5) dm-1 DELL    ,MD3000        
> [size=200G][features=0][hwhandler=0]
> \_ round-robin 0 [prio=3][active]
>  \_ 1:0:1:1 sdf 8:80  [active][ready]
> \_ round-robin 0 [prio=0][enabled]
>  \_ 1:0:0:1 sdc 8:32  [active][ghost]
> 
> As you can see it show's all paths correctly and also show's them as

Yes, they all look good.

> active/ready and active/ghost. Attached is my multipath.conf b.t.w.
> 
Your multipath.conf looks good too.

> But I understand path failover/failback will not work without without
> the hardware handler :( I am planning this machine for a production

Your storage is configured in AVT mode or rdac mode ?

You wont need the handler if your storage is configured in AVT mode.
 
> environment, so I quess I have to wait till 2.6.23.1 comes out.

If you are using it in rdac mode, then you have to wait.

> 
> Any idea when that should be? Or are there any kernel patches I could

Usually they are released within 2-3 months of the last release. 2.6.22
was released on Jul 8th. So, it should be somewhere between Sep 8th and
Oct 8th :)...

> use for 2.6.22.2? Or does it not work that way?

It would work, but I would not suggest it :), especially for a
production system.

chandra
> 
> Thanks,
> 
> Sander
> 
> 
> 
> 
> On Thu, 2007-08-16 at 11:23 -0700, Chandra Seetharaman wrote:
> > On Thu, 2007-08-16 at 19:58 +0200, S. J. van Harmelen wrote:
> > > Hi Chandra,
> > > 
> > > Thanks for your reply! As far as I know it does use a LSI Engenio. I
> > > asked Dell if they can confirm this, but I didn't get any reply yet.
> > > Will get back with the answer as soon as I get it.
> > > 
> > My reply below is based on the assumption that it does use LSI Engenio.
> > 
> > > Besides that it seems to be working now. I don't have any errors anymore
> > > and it's not as slow as before. It's now doing something like 120M/sec,
> > > but don't know if thats good or not (don't know how fast this device
> > > should be)...
> > > 
> > > I did leave out the hardware_handler line because of the error it gives.
> > > But I understand that is because of my kernel? I'm using the package
> > > from Christophe's website version 0.4.8 on a Debian Etch 64bit machine
> > > with a 2.6.22.2 kernel.
> > 
> > Yes, you need a 2.6.23-rc1 (or upwards) kernel to have the rdac hardware
> > handler support.
> > > 
> > > I quess I need the hardware_handler to make it work as it should? Al
> > 
> > Yes, without the hardware handler, path failover/failback will not work.
> > 
> > > true it sees all paths and says that both active. Where one is
> > > active/ready and the other is active/ghost. 
> > > 
> > > Anything I can do about this? 
> > 
> > I do not understand the problem you are mentioning here. Will be easier
> > to follow if you can copy the o/p of "multipath -ll" and explain your
> > issue w.r.t that.
> > 
> > Also, attaching your multipath.conf would also be useful.
> > 
> > chandra
> > > 
> > > Sander
> > > 
> > > 
> > > 
> > > 
> > > 
> > > 
> > > On Thu, 2007-08-16 at 10:26 -0700, Chandra Seetharaman wrote:
> > > > First off, the "mpath_prio_rdac" is the path checker for the lsi engenio
> > > > controller. Is the Dell MD300 based on that controller ?
> > > > 
> > > > If it is _not_, then you should _not_ be using mpath_prio_rdac.
> > > > 
> > > > If it is, read on.
> > > > 
> > > > You need to use the hardware handler for the same controller, you can
> > > > setup your multipath.conf to use the "rdac" hardware handler.
> > > > 
> > > > Here is how your multipath.conf should look like:
> > > > -----------
> > > > devices {
> > > >         device {
> > > >                 vendor                  "$vendor_name"
> > > >                 product                 "$product_name"
> > > >                 hardware_handler        "1 rdac"
> > > >                 path_checker            rdac
> > > >                 path_grouping_policy    group_by_prio
> > > >                 prio_callout            "/sbin/mpath_prio_rdac /dev/%n"
> > > >         }
> > > > }
> > > > -----------
> > > > 
> > > > Note: replace $vendor_name and $product_name with appropriate vendor and
> > > > product information for the storage.
> > > > 
> > > > Hardware handler for rdac is available only in 2.6.23-rc1 and onwards
> > > > (if you are not using this version, do let me know which version of the
> > > > kernel you are using, even if it is in distro).
> > > > 
> > > > Where did you get the multipath-tools from ? From Christophe's website
> > > > or any distro(RedHat/SuSE) ?
> > > > 
> > > > And, as Malahal pointed, make sure you have /sbin/mpath_prio_rdac
> > > > available and is an executable.
> > > > 
> > > > Hope this helps,
> > > > 
> > > > chandra
> > > > On Fri, 2007-08-10 at 16:50 +0200, S. J. van Harmelen wrote:
> > > > > Oke, got a bit further...
> > > > > 
> > > > > I now understand how to use the disks. Only thing thats not going oke is
> > > > > that I get these errors constantly (while formatting):
> > > > > 
> > > > > end_request: I/O error, dev sdf, sector 30408704
> > > > > end_request: I/O error, dev sdf, sector 30670848
> > > > > end_request: I/O error, dev sdf, sector 30932992
> > > > > end_request: I/O error, dev sdf, sector 31195136
> > > > > end_request: I/O error, dev sdf, sector 31457280
> > > > > 
> > > > > or (while editting a file):
> > > > > 
> > > > > end_request: I/O error, dev sdc, sector 966656
> > > > > device-mapper: multipath: Failing path 8:32.
> > > > > end_request: I/O error, dev sdc, sector 966720
> > > > > device-mapper: multipath: Failing path 8:32.
> > > > > end_request: I/O error, dev sdc, sector 96665
> > > > > 
> > > > > And the device seems very slow...
> > > > > 
> > > > > And also stil having this error: "error calling out mpath_prio_rdac"
> > > > > 
> > > > > Any tips, pointers?
> > > > > 
> > > > > Sander
> > > > > 
> > > > > -------- Forwarded Message --------
> > > > > From: S. J. van Harmelen <svanharmelen@xillan.nl>
> > > > > To: dm-devel@redhat.com
> > > > > Subject: Re: Multipath-tools
> > > > > Date: Fri, 10 Aug 2007 11:47:01 +0200
> > > > > 
> > > > > Hi again,
> > > > > 
> > > > > Seem to have found the solution for the first question. Got
> > > > > multipath-tools up and running now :)
> > > > > 
> > > > > But please do answer the others questions if you have a minute to
> > > > > spare...
> > > > > 
> > > > > Also I'm seeing "error calling out mpath_prio_rdac" when starting
> > > > > multipathd?! Any word on that one?
> > > > > 
> > > > > Regards,
> > > > > 
> > > > > Sander
> > > > > 
> > > > > 
> > > > > 
> > > > > On Fri, 2007-08-10 at 10:27 +0200, S. J. van Harmelen wrote:
> > > > > > Hey guys,
> > > > > > 
> > > > > > Sorry to bother you, but I have a question I think you can answer. I
> > > > > > also send this message to Christophe, but I don't know how long he takes
> > > > > > to respond. I'm trying to set up a Dell NX1950 which has an RDAC MD300
> > > > > > array connected with linux.
> > > > > > 
> > > > > > Now I got all thinks working, but the RDAC driver. I'm trying to use the
> > > > > > opensource multipath-tools (which I want to compile myself), but I have
> > > > > > some questions about it:
> > > > > > 
> > > > > > 1) While compiling I get an error saying: "/usr/bin/ld: cannot find
> > > > > > -ldevmapper" Can you tell me what I can do to fix this error?
> > > > > > 
> > > > > > 2) Can you tell me if there is a mailinglist for the multipath-tools?
> > > > > > 
> > > > > > 3) Can you point me to some documentation about configuring the
> > > > > > multipath-tools with the new RDAC path checker?
> > > > > > 
> > > > > > Thanks very much for your time!
> > > > > > 
> > > > > > Kind regards,
> > > > > > 
> > > > > > Sander van Harmelen
> > > > > 
> > > > > --
> > > > > dm-devel mailing list
> > > > > dm-devel@redhat.com
> > > > > https://www.redhat.com/mailman/listinfo/dm-devel
> > > > -- 
> > > > 
> > > > ----------------------------------------------------------------------
> > > >     Chandra Seetharaman               | Be careful what you choose....
> > > >               - sekharan@us.ibm.com   |      .......you may get it.
> > > > ----------------------------------------------------------------------
> > > > 
> > > > 
> > > > --
> > > > dm-devel mailing list
> > > > dm-devel@redhat.com
> > > > https://www.redhat.com/mailman/listinfo/dm-devel
> > > 
-- 

----------------------------------------------------------------------
    Chandra Seetharaman               | Be careful what you choose....
              - sekharan@us.ibm.com   |      .......you may get it.
----------------------------------------------------------------------

^ permalink raw reply	[flat|nested] 7+ messages in thread
* Re: Multipath-tools errors
  2007-08-16 19:05         ` Chandra Seetharaman
@ 2007-08-16 19:21           ` S. J. van Harmelen
  0 siblings, 0 replies; 7+ messages in thread
From: S. J. van Harmelen @ 2007-08-16 19:21 UTC (permalink / raw)
  To: sekharan; +Cc: device-mapper development

It's configured for RDAC as far as I know, and I'm not sure if I can
change this. This is another question for Dell I quess :)

So I'll just have to wait about a month or so...

Thanks very much for your help!!


On Thu, 2007-08-16 at 12:05 -0700, Chandra Seetharaman wrote:
> On Thu, 2007-08-16 at 20:36 +0200, S. J. van Harmelen wrote:
> > In my last lines I meant that it looked okay:
> > 
> > root@storage:~# multipath -ll
> > backup (360019b9000d7e1100000444b46be82c4) dm-0 DELL    ,MD3000        
> > [size=200G][features=0][hwhandler=0]
> > \_ round-robin 0 [prio=3][active]
> >  \_ 1:0:1:2 sdg 8:96  [active][ready]
> > \_ round-robin 0 [prio=0][enabled]
> >  \_ 1:0:0:2 sdd 8:48  [active][ghost]
> > vmware (360019b9000d7e1100000444846be81b6) dm-2 DELL    ,MD3000        
> > [size=200G][features=0][hwhandler=0]
> > \_ round-robin 0 [prio=3][active]
> >  \_ 1:0:0:0 sdb 8:16  [active][ready]
> > \_ round-robin 0 [prio=0][enabled]
> >  \_ 1:0:1:0 sde 8:64  [active][ghost]
> > data (360019b9000d7ddab0000493846be81e5) dm-1 DELL    ,MD3000        
> > [size=200G][features=0][hwhandler=0]
> > \_ round-robin 0 [prio=3][active]
> >  \_ 1:0:1:1 sdf 8:80  [active][ready]
> > \_ round-robin 0 [prio=0][enabled]
> >  \_ 1:0:0:1 sdc 8:32  [active][ghost]
> > 
> > As you can see it show's all paths correctly and also show's them as
> 
> Yes, they all look good.
> 
> > active/ready and active/ghost. Attached is my multipath.conf b.t.w.
> > 
> Your multipath.conf looks good too.
> 
> > But I understand path failover/failback will not work without without
> > the hardware handler :( I am planning this machine for a production
> 
> Your storage is configured in AVT mode or rdac mode ?
> 
> You wont need the handler if your storage is configured in AVT mode.
>  
> > environment, so I quess I have to wait till 2.6.23.1 comes out.
> 
> If you are using it in rdac mode, then you have to wait.
> 
> > 
> > Any idea when that should be? Or are there any kernel patches I could
> 
> Usually they are released within 2-3 months of the last release. 2.6.22
> was released on Jul 8th. So, it should be somewhere between Sep 8th and
> Oct 8th :)...
> 
> > use for 2.6.22.2? Or does it not work that way?
> 
> It would work, but I would not suggest it :), especially for a
> production system.
> 
> chandra
> > 
> > Thanks,
> > 
> > Sander
> > 
> > 
> > 
> > 
> > On Thu, 2007-08-16 at 11:23 -0700, Chandra Seetharaman wrote:
> > > On Thu, 2007-08-16 at 19:58 +0200, S. J. van Harmelen wrote:
> > > > Hi Chandra,
> > > > 
> > > > Thanks for your reply! As far as I know it does use a LSI Engenio. I
> > > > asked Dell if they can confirm this, but I didn't get any reply yet.
> > > > Will get back with the answer as soon as I get it.
> > > > 
> > > My reply below is based on the assumption that it does use LSI Engenio.
> > > 
> > > > Besides that it seems to be working now. I don't have any errors anymore
> > > > and it's not as slow as before. It's now doing something like 120M/sec,
> > > > but don't know if thats good or not (don't know how fast this device
> > > > should be)...
> > > > 
> > > > I did leave out the hardware_handler line because of the error it gives.
> > > > But I understand that is because of my kernel? I'm using the package
> > > > from Christophe's website version 0.4.8 on a Debian Etch 64bit machine
> > > > with a 2.6.22.2 kernel.
> > > 
> > > Yes, you need a 2.6.23-rc1 (or upwards) kernel to have the rdac hardware
> > > handler support.
> > > > 
> > > > I quess I need the hardware_handler to make it work as it should? Al
> > > 
> > > Yes, without the hardware handler, path failover/failback will not work.
> > > 
> > > > true it sees all paths and says that both active. Where one is
> > > > active/ready and the other is active/ghost. 
> > > > 
> > > > Anything I can do about this? 
> > > 
> > > I do not understand the problem you are mentioning here. Will be easier
> > > to follow if you can copy the o/p of "multipath -ll" and explain your
> > > issue w.r.t that.
> > > 
> > > Also, attaching your multipath.conf would also be useful.
> > > 
> > > chandra
> > > > 
> > > > Sander
> > > > 
> > > > 
> > > > 
> > > > 
> > > > 
> > > > 
> > > > On Thu, 2007-08-16 at 10:26 -0700, Chandra Seetharaman wrote:
> > > > > First off, the "mpath_prio_rdac" is the path checker for the lsi engenio
> > > > > controller. Is the Dell MD300 based on that controller ?
> > > > > 
> > > > > If it is _not_, then you should _not_ be using mpath_prio_rdac.
> > > > > 
> > > > > If it is, read on.
> > > > > 
> > > > > You need to use the hardware handler for the same controller, you can
> > > > > setup your multipath.conf to use the "rdac" hardware handler.
> > > > > 
> > > > > Here is how your multipath.conf should look like:
> > > > > -----------
> > > > > devices {
> > > > >         device {
> > > > >                 vendor                  "$vendor_name"
> > > > >                 product                 "$product_name"
> > > > >                 hardware_handler        "1 rdac"
> > > > >                 path_checker            rdac
> > > > >                 path_grouping_policy    group_by_prio
> > > > >                 prio_callout            "/sbin/mpath_prio_rdac /dev/%n"
> > > > >         }
> > > > > }
> > > > > -----------
> > > > > 
> > > > > Note: replace $vendor_name and $product_name with appropriate vendor and
> > > > > product information for the storage.
> > > > > 
> > > > > Hardware handler for rdac is available only in 2.6.23-rc1 and onwards
> > > > > (if you are not using this version, do let me know which version of the
> > > > > kernel you are using, even if it is in distro).
> > > > > 
> > > > > Where did you get the multipath-tools from ? From Christophe's website
> > > > > or any distro(RedHat/SuSE) ?
> > > > > 
> > > > > And, as Malahal pointed, make sure you have /sbin/mpath_prio_rdac
> > > > > available and is an executable.
> > > > > 
> > > > > Hope this helps,
> > > > > 
> > > > > chandra
> > > > > On Fri, 2007-08-10 at 16:50 +0200, S. J. van Harmelen wrote:
> > > > > > Oke, got a bit further...
> > > > > > 
> > > > > > I now understand how to use the disks. Only thing thats not going oke is
> > > > > > that I get these errors constantly (while formatting):
> > > > > > 
> > > > > > end_request: I/O error, dev sdf, sector 30408704
> > > > > > end_request: I/O error, dev sdf, sector 30670848
> > > > > > end_request: I/O error, dev sdf, sector 30932992
> > > > > > end_request: I/O error, dev sdf, sector 31195136
> > > > > > end_request: I/O error, dev sdf, sector 31457280
> > > > > > 
> > > > > > or (while editting a file):
> > > > > > 
> > > > > > end_request: I/O error, dev sdc, sector 966656
> > > > > > device-mapper: multipath: Failing path 8:32.
> > > > > > end_request: I/O error, dev sdc, sector 966720
> > > > > > device-mapper: multipath: Failing path 8:32.
> > > > > > end_request: I/O error, dev sdc, sector 96665
> > > > > > 
> > > > > > And the device seems very slow...
> > > > > > 
> > > > > > And also stil having this error: "error calling out mpath_prio_rdac"
> > > > > > 
> > > > > > Any tips, pointers?
> > > > > > 
> > > > > > Sander
> > > > > > 
> > > > > > -------- Forwarded Message --------
> > > > > > From: S. J. van Harmelen <svanharmelen@xillan.nl>
> > > > > > To: dm-devel@redhat.com
> > > > > > Subject: Re: Multipath-tools
> > > > > > Date: Fri, 10 Aug 2007 11:47:01 +0200
> > > > > > 
> > > > > > Hi again,
> > > > > > 
> > > > > > Seem to have found the solution for the first question. Got
> > > > > > multipath-tools up and running now :)
> > > > > > 
> > > > > > But please do answer the others questions if you have a minute to
> > > > > > spare...
> > > > > > 
> > > > > > Also I'm seeing "error calling out mpath_prio_rdac" when starting
> > > > > > multipathd?! Any word on that one?
> > > > > > 
> > > > > > Regards,
> > > > > > 
> > > > > > Sander
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > On Fri, 2007-08-10 at 10:27 +0200, S. J. van Harmelen wrote:
> > > > > > > Hey guys,
> > > > > > > 
> > > > > > > Sorry to bother you, but I have a question I think you can answer. I
> > > > > > > also send this message to Christophe, but I don't know how long he takes
> > > > > > > to respond. I'm trying to set up a Dell NX1950 which has an RDAC MD300
> > > > > > > array connected with linux.
> > > > > > > 
> > > > > > > Now I got all thinks working, but the RDAC driver. I'm trying to use the
> > > > > > > opensource multipath-tools (which I want to compile myself), but I have
> > > > > > > some questions about it:
> > > > > > > 
> > > > > > > 1) While compiling I get an error saying: "/usr/bin/ld: cannot find
> > > > > > > -ldevmapper" Can you tell me what I can do to fix this error?
> > > > > > > 
> > > > > > > 2) Can you tell me if there is a mailinglist for the multipath-tools?
> > > > > > > 
> > > > > > > 3) Can you point me to some documentation about configuring the
> > > > > > > multipath-tools with the new RDAC path checker?
> > > > > > > 
> > > > > > > Thanks very much for your time!
> > > > > > > 
> > > > > > > Kind regards,
> > > > > > > 
> > > > > > > Sander van Harmelen
> > > > > > 
> > > > > > --
> > > > > > dm-devel mailing list
> > > > > > dm-devel@redhat.com
> > > > > > https://www.redhat.com/mailman/listinfo/dm-devel
> > > > > -- 
> > > > > 
> > > > > ----------------------------------------------------------------------
> > > > >     Chandra Seetharaman               | Be careful what you choose....
> > > > >               - sekharan@us.ibm.com   |      .......you may get it.
> > > > > ----------------------------------------------------------------------
> > > > > 
> > > > > 
> > > > > --
> > > > > dm-devel mailing list
> > > > > dm-devel@redhat.com
> > > > > https://www.redhat.com/mailman/listinfo/dm-devel
> > > > 

^ permalink raw reply	[flat|nested] 7+ messages in thread
end of thread, other threads:[~2007-08-16 19:21 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2007-08-10 14:50 Multipath-tools errors S. J. van Harmelen
2007-08-16 17:26 ` Chandra Seetharaman
2007-08-16 17:58   ` S. J. van Harmelen
2007-08-16 18:23     ` Chandra Seetharaman
2007-08-16 18:36       ` S. J. van Harmelen
2007-08-16 19:05         ` Chandra Seetharaman
2007-08-16 19:21           ` S. J. van Harmelen

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