[linux-lvm] clusteredVG+mirroredLV

[linux-lvm] clusteredVG+mirroredLV

[Michael Eisenkölbl]

Hi all,

i want to create a two node cluster with three iSCSI devices.
the iSCSI devices should be mirrored (2mirror+1log) to be more secure.
I am going to configure 3 PVs and after a clustered volume group, so 
this is no problem.
but when I am trying to create the mirrored logical volume (on this 
clusteredVG), I got the following error message:

lvcreate command failed.
Command attempted: "/usr/sbin/lvcreate -n mirrorLV -l 6 -m1 mirrorVG 
/dev/sde1 /dev/sdb1 /dev/sdc1" - System Error Message:   Error locking 
on node server4: Internal lvm error, check syslog
Aborting. Failed to activate mirror log. Remove new LVs and retry.
Failed to create mirror log.

I deleted everything and retried it, but everytime the same error.
cluster is working good. clvmd is also started with locking mode 2.
if I try to create a normal VG with a mirrored LV everythings fine.
if I try to create a clustered VG with a normal LV everythings fine.
but not a clustered VG with a mirrored LV...... why?

maybe somebody can help me with this situation.

kind regards
Michael

Re: [linux-lvm] clusteredVG+mirroredLV

[Jayson Vantuyl]

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Mirroring (and snapshotting) does not currently work with clustered  
VGs.  This is because cmirror (and csnap) is not released yet.

On Apr 25, 2007, at 2:48 AM, Michael Eisenkölbl wrote:

> Hi all,
>
> i want to create a two node cluster with three iSCSI devices.
> the iSCSI devices should be mirrored (2mirror+1log) to be more secure.
> I am going to configure 3 PVs and after a clustered volume group,  
> so this is no problem.
> but when I am trying to create the mirrored logical volume (on this  
> clusteredVG), I got the following error message:
>
> lvcreate command failed.
> Command attempted: "/usr/sbin/lvcreate -n mirrorLV -l 6 -m1  
> mirrorVG /dev/sde1 /dev/sdb1 /dev/sdc1" - System Error Message:    
> Error locking on node server4: Internal lvm error, check syslog
> Aborting. Failed to activate mirror log. Remove new LVs and retry.
> Failed to create mirror log.
>
> I deleted everything and retried it, but everytime the same error.
> cluster is working good. clvmd is also started with locking mode 2.
> if I try to create a normal VG with a mirrored LV everythings fine.
> if I try to create a clustered VG with a normal LV everythings fine.
> but not a clustered VG with a mirrored LV...... why?
>
> maybe somebody can help me with this situation.
>
> kind regards
> Michael
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/



-- 
Jayson Vantuyl
Systems Architect
Engine Yard
jvantuyl@engineyard.com



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Re: [linux-lvm] clusteredVG+mirroredLV

[Michael Eisenkölbl]

Do you know when it will be released?
Will it work with with RHEL 5?

Jayson Vantuyl wrote:
> Mirroring (and snapshotting) does not currently work with clustered 
> VGs.  This is because cmirror (and csnap) is not released yet.
>
> On Apr 25, 2007, at 2:48 AM, Michael Eisenk�lbl wrote:
>
>> Hi all,
>>
>> i want to create a two node cluster with three iSCSI devices.
>> the iSCSI devices should be mirrored (2mirror+1log) to be more secure.
>> I am going to configure 3 PVs and after a clustered volume group, so 
>> this is no problem.
>> but when I am trying to create the mirrored logical volume (on this 
>> clusteredVG), I got the following error message:
>>
>> lvcreate command failed.
>> Command attempted: "/usr/sbin/lvcreate -n mirrorLV -l 6 -m1 mirrorVG 
>> /dev/sde1 /dev/sdb1 /dev/sdc1" - System Error Message:   Error 
>> locking on node server4: Internal lvm error, check syslog
>> Aborting. Failed to activate mirror log. Remove new LVs and retry.
>> Failed to create mirror log.
>>
>> I deleted everything and retried it, but everytime the same error.
>> cluster is working good. clvmd is also started with locking mode 2.
>> if I try to create a normal VG with a mirrored LV everythings fine.
>> if I try to create a clustered VG with a normal LV everythings fine.
>> but not a clustered VG with a mirrored LV...... why?
>>
>> maybe somebody can help me with this situation.
>>
>> kind regards
>> Michael
>>
>> _______________________________________________
>> linux-lvm mailing list
>> linux-lvm@redhat.com <mailto:linux-lvm@redhat.com>
>> https://www.redhat.com/mailman/listinfo/linux-lvm
>> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>
>
>
> -- 
> Jayson Vantuyl
> Systems Architect
> *Engine Yard <http://www.engineyard.com>*
> jvantuyl@engineyard.com <mailto:jvantuyl@engineyard.com>
>
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

Re: [linux-lvm] clusteredVG+mirroredLV

[Michael Eisenkölbl]

is there any other possibility the get a solution?

Jayson Vantuyl wrote:
> Mirroring (and snapshotting) does not currently work with clustered 
> VGs.  This is because cmirror (and csnap) is not released yet.
>
> On Apr 25, 2007, at 2:48 AM, Michael Eisenk�lbl wrote:
>
>> Hi all,
>>
>> i want to create a two node cluster with three iSCSI devices.
>> the iSCSI devices should be mirrored (2mirror+1log) to be more secure.
>> I am going to configure 3 PVs and after a clustered volume group, so 
>> this is no problem.
>> but when I am trying to create the mirrored logical volume (on this 
>> clusteredVG), I got the following error message:
>>
>> lvcreate command failed.
>> Command attempted: "/usr/sbin/lvcreate -n mirrorLV -l 6 -m1 mirrorVG 
>> /dev/sde1 /dev/sdb1 /dev/sdc1" - System Error Message:   Error 
>> locking on node server4: Internal lvm error, check syslog
>> Aborting. Failed to activate mirror log. Remove new LVs and retry.
>> Failed to create mirror log.
>>
>> I deleted everything and retried it, but everytime the same error.
>> cluster is working good. clvmd is also started with locking mode 2.
>> if I try to create a normal VG with a mirrored LV everythings fine.
>> if I try to create a clustered VG with a normal LV everythings fine.
>> but not a clustered VG with a mirrored LV...... why?
>>
>> maybe somebody can help me with this situation.
>>
>> kind regards
>> Michael
>>
>> _______________________________________________
>> linux-lvm mailing list
>> linux-lvm@redhat.com <mailto:linux-lvm@redhat.com>
>> https://www.redhat.com/mailman/listinfo/linux-lvm
>> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>
>
>
> -- 
> Jayson Vantuyl
> Systems Architect
> *Engine Yard <http://www.engineyard.com>*
> jvantuyl@engineyard.com <mailto:jvantuyl@engineyard.com>
>
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

Re: [linux-lvm] clusteredVG+mirroredLV

[Lin_ChiiShing]

I am using source with cvs tag RHEL4U4, and was able to go into
cmirror-kernel directory to build the module dm-cmirror.ko

After loading dm_cmirror module, the system-config-lvm tool
configured a mirrored LV in a clustered VG successfully.

Can someone in RedHat shed light on what's the current status of source
for cmirror-kernel and clustered mirroring? 
What's expected to work (such as normal IO), and
what's expected not to work yet ? For early bird developers who are interested in 
using this technology, do you have a recommended CVS tag for the source to do the prototype ? 

    Thanks,
    -ChiiSHing


-----Original Message-----
Date: Wed, 25 Apr 2007 10:29:52 +0200
From: Michael Eisenk?lbl <eisenkoe@cargo-partner.com>
Subject: Re: [linux-lvm] clusteredVG+mirroredLV
To: LVM general discussion and development <linux-lvm@redhat.com>
Message-ID: <462F1180.1010602@cargo-partner.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Do you know when it will be released?
Will it work with with RHEL 5?

Jayson Vantuyl wrote:
> Mirroring (and snapshotting) does not currently work with clustered 
> VGs.  This is because cmirror (and csnap) is not released yet.
>
> On Apr 25, 2007, at 2:48 AM, Michael Eisenk�lbl wrote:
>
>> Hi all,
>>
>> i want to create a two node cluster with three iSCSI devices.
>> the iSCSI devices should be mirrored (2mirror+1log) to be more secure.
>> I am going to configure 3 PVs and after a clustered volume group, so 
>> this is no problem.
>> but when I am trying to create the mirrored logical volume (on this 
>> clusteredVG), I got the following error message:
>>
>> lvcreate command failed.
>> Command attempted: "/usr/sbin/lvcreate -n mirrorLV -l 6 -m1 mirrorVG 
>> /dev/sde1 /dev/sdb1 /dev/sdc1" - System Error Message:   Error 
>> locking on node server4: Internal lvm error, check syslog
>> Aborting. Failed to activate mirror log. Remove new LVs and retry.
>> Failed to create mirror log.
>>
>> I deleted everything and retried it, but everytime the same error.
>> cluster is working good. clvmd is also started with locking mode 2.
>> if I try to create a normal VG with a mirrored LV everythings fine.
>> if I try to create a clustered VG with a normal LV everythings fine.
>> but not a clustered VG with a mirrored LV...... why?
>>
>> maybe somebody can help me with this situation.
>>
>> kind regards
>> Michael
>>
>> _______________________________________________
>> linux-lvm mailing list
>> linux-lvm@redhat.com <mailto:linux-lvm@redhat.com>
>> https://www.redhat.com/mailman/listinfo/linux-lvm
>> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>
>
>
> -- 
> Jayson Vantuyl
> Systems Architect
> *Engine Yard <http://www.engineyard.com>*
> jvantuyl@engineyard.com <mailto:jvantuyl@engineyard.com>
>
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/



 

Re: [linux-lvm] clusteredVG+mirroredLV

[Jonathan Brassow]

cluster mirroring is slated to come out with rhel4 u5

It will not be immediately available in rhel5.

There are two versions of cluster mirroring.  One which will go into  
rhel4u5.  The other is to go upstream and into rhel5 at some point.   
The re-write is based on OpenAIS.

  brassow

On Apr 25, 2007, at 9:46 AM, Lin_ChiiShing@emc.com wrote:

>
> I am using source with cvs tag RHEL4U4, and was able to go into
> cmirror-kernel directory to build the module dm-cmirror.ko
>
> After loading dm_cmirror module, the system-config-lvm tool
> configured a mirrored LV in a clustered VG successfully.
>
> Can someone in RedHat shed light on what's the current status of  
> source
> for cmirror-kernel and clustered mirroring?
> What's expected to work (such as normal IO), and
> what's expected not to work yet ? For early bird developers who are  
> interested in
> using this technology, do you have a recommended CVS tag for the  
> source to do the prototype ?

Re: [linux-lvm] clusteredVG+mirroredLV

[Michael Eisenkölbl]

Does anybody know, when it will be official released (rhel4u5)?
or is there any rpm, which i can dowload to patch my kernel?
how can I create the dm_cmirror myself?

michael

Jonathan Brassow wrote:
> cluster mirroring is slated to come out with rhel4 u5
>
> It will not be immediately available in rhel5.
>
> There are two versions of cluster mirroring.  One which will go into 
> rhel4u5.  The other is to go upstream and into rhel5 at some point.  
> The re-write is based on OpenAIS.
>
>  brassow
>
> On Apr 25, 2007, at 9:46 AM, Lin_ChiiShing@emc.com wrote:
>
>>
>> I am using source with cvs tag RHEL4U4, and was able to go into
>> cmirror-kernel directory to build the module dm-cmirror.ko
>>
>> After loading dm_cmirror module, the system-config-lvm tool
>> configured a mirrored LV in a clustered VG successfully.
>>
>> Can someone in RedHat shed light on what's the current status of source
>> for cmirror-kernel and clustered mirroring?
>> What's expected to work (such as normal IO), and
>> what's expected not to work yet ? For early bird developers who are 
>> interested in
>> using this technology, do you have a recommended CVS tag for the 
>> source to do the prototype ?
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

Re: [linux-lvm] clusteredVG+mirroredLV

[Michael Eisenkölbl]

Hi Brassow,

any news about that?

michael

Jonathan Brassow schrieb:
> cluster mirroring is slated to come out with rhel4 u5
>
> It will not be immediately available in rhel5.
>
> There are two versions of cluster mirroring.  One which will go into 
> rhel4u5.  The other is to go upstream and into rhel5 at some point.  
> The re-write is based on OpenAIS.
>
>  brassow
>
> On Apr 25, 2007, at 9:46 AM, Lin_ChiiShing@emc.com wrote:
>
>>
>> I am using source with cvs tag RHEL4U4, and was able to go into
>> cmirror-kernel directory to build the module dm-cmirror.ko
>>
>> After loading dm_cmirror module, the system-config-lvm tool
>> configured a mirrored LV in a clustered VG successfully.
>>
>> Can someone in RedHat shed light on what's the current status of source
>> for cmirror-kernel and clustered mirroring?
>> What's expected to work (such as normal IO), and
>> what's expected not to work yet ? For early bird developers who are 
>> interested in
>> using this technology, do you have a recommended CVS tag for the 
>> source to do the prototype ?
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/