[linux-lvm] lvm und promise fasttrack

[linux-lvm] lvm und promise fasttrack

[Jens Tkotz]

Hallo Heinz,

ich hab schon wieder ein "Problem".

Auf meinem Mainboard ist ein Promise Fasttrack 100 Controller.
Die Festplatten kann ich �ber /dev/hd[e-h] ansprechen.

Es gibt aber auch die M�glichkeit das Hardware Raid anzuspechen �ber
/dev/ataraid/d[0-2]px , mit x als Partitionsnummer.

Beim Aufruf von vgcreate passiert folgendes :
vgcreate gl_lvm /dev/ataraid/d0p1
vgcreate -- physical volume name "/dev/ataraid/d0p1" is invalid

Gr��e,

Jens

Re: [linux-lvm] lvm und promise fasttrack

[Goetz Bock]

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Hallo Jens,
> > ich hab schon wieder ein "Problem".
Well, it might be a good idea to write your requests to an international
mailing list in english ...
so let's translate your questions (not a strict translation)

> > Auf meinem Mainboard ist ein Promise Fasttrack 100 Controller.
> > Die Festplatten kann ich ueber /dev/hd[e-h] ansprechen.
> My mainboard features a Promise Fasttrack 100 Controller, and I can
> access my harddrives as /dev/hd[e-h]
> 
> > Es gibt aber auch die Moeglichkeit das Hardware Raid anzuspechen ueber
> > /dev/ataraid/d[0-2]px , mit x als Partitionsnummer.
> But there is also the option to use the hardware raid as
> /dev/ataraid/d[0-2]px, with x beeing the partition number
> 
> > Beim Aufruf von vgcreate passiert folgendes :
> when calling vgcreate like this:
> vgcreate gl_lvm /dev/ataraid/d0p1
> vgcreate -- physical volume name "/dev/ataraid/d0p1" is invalid
For this to work, you must first use pvcreate to add the LVM's PV
information to your device:
pvcreate /dev/ataraid/d0p1

But this will not help you, as pvcreate checls the device name against a
list of valid devices, and /dev/ataraid is not port of this (at last not
in the way outdated 0.9.1beta5 src I've on this system)

OOTH you should not trust the bios based softraid of any of the consumer
raid devices, it is no hardware raid (not just MHO). If you want to do raid
with IDE devices, I'd suggest using the kernel based MD drivers, and putting 
every IDE disk on it's own channel.   

-- 
Goetz Bock                                              IT Consultant
Dipl.-Inf. Univ.

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Re: [linux-lvm] lvm und promise fasttrack

[Heinz J . Mauelshagen]

On Fri, Oct 26, 2001 at 08:13:26AM +0200, Goetz Bock wrote:
> 
> Hallo Jens,
> > > ich hab schon wieder ein "Problem".
> Well, it might be a good idea to write your requests to an international
> mailing list in english ...

Well, Jens probably wanted to send it to me personally :-)

> so let's translate your questions (not a strict translation)
> 
> > > Auf meinem Mainboard ist ein Promise Fasttrack 100 Controller.
> > > Die Festplatten kann ich ueber /dev/hd[e-h] ansprechen.
> > My mainboard features a Promise Fasttrack 100 Controller, and I can
> > access my harddrives as /dev/hd[e-h]
> > 
> > > Es gibt aber auch die Moeglichkeit das Hardware Raid anzuspechen ueber
> > > /dev/ataraid/d[0-2]px , mit x als Partitionsnummer.
> > But there is also the option to use the hardware raid as
> > /dev/ataraid/d[0-2]px, with x beeing the partition number
> > 
> > > Beim Aufruf von vgcreate passiert folgendes :
> > when calling vgcreate like this:
> > vgcreate gl_lvm /dev/ataraid/d0p1
> > vgcreate -- physical volume name "/dev/ataraid/d0p1" is invalid
> For this to work, you must first use pvcreate to add the LVM's PV
> information to your device:
> pvcreate /dev/ataraid/d0p1
> 
> But this will not help you, as pvcreate checls the device name against a
> list of valid devices, and /dev/ataraid is not port of this (at last not
> in the way outdated 0.9.1beta5 src I've on this system)
> 
> OOTH you should not trust the bios based softraid of any of the consumer
> raid devices, it is no hardware raid (not just MHO). If you want to do raid
> with IDE devices, I'd suggest using the kernel based MD drivers, and putting 
> every IDE disk on it's own channel.   

Yes, but if Jens still wants it, "atatraid" needs to be added to the _devdir
array in lvm_dir_cache.c.
In future LVM you just change/add an entry to a central config file.

> 
> -- 
> Goetz Bock                                              IT Consultant
> Dipl.-Inf. Univ.



-- 

Regards,
Heinz    -- The LVM Guy --

*** Software bugs are stupid.
    Nevertheless it needs not so stupid people to solve them ***

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Heinz Mauelshagen                                 Sistina Software Inc.
Senior Consultant/Developer                       Am Sonnenhang 11
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Mauelshagen@Sistina.com                           +49 2626 141200
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