[linux-lvm] LVM available on software raid5 (md)

[linux-lvm] LVM available on software raid5 (md)

[Anthony Luke Nelson]

Good day,

Does anyone know if LVM is supported on software raid5. I understand it
can run on a striped set being raid0 , but heard that it doesn't support
raid5. Is this true or has this been resolved.


Thanks,


________________________________________________________________________
__________________
Anthony Luke Nelson
"nerd with an attitude"
luken7@hotmail.com

Re: [linux-lvm] LVM available on software raid5 (md)

[Jason L Tibbitts III]

>>>>> "ALN" == Anthony Luke Nelson <tony.nelson@pobox.com> writes:

ALN> Does anyone know if LVM is supported on software raid5.

Works fine for me:

md5 : active raid5 sdh7[1] sdg7[6] sdf7[5] sde7[4] sdd7[3] sdc7[2] sdb7[7] sda7[0]
      416837376 blocks level 5, 128k chunk, algorithm 2 [7/7] [UUUUUUU]

VG:  nas  [1 PV, 11 LV/10 open]  PE Size: 8192 KB
  Usage [KB/PE]: 416825344 /50882 total  386924544 /47232 used  29900800 /3650 free
  PV:  [AA] md5                   416825344 /50882   386924544 /47232   29900800 /3650

 - J<

RE: [linux-lvm] LVM available on software raid5 (md)

[Anthony Luke Nelson]

OK, thanks.

I was messing with SUSE 7.3 and in their LVM control panel, it only
seemed to suport linear or striping. 
How have you done yours? Do yo do it from the command line and are any
specific versions/packages required for this?
Are you using the Sistina LVM package?

 
 
 
Thanks,

 
________________________________________________________________________
__________________
Anthony Luke Nelson
"nerd with an attitude"
tony.nelson@wcom.com
http://ret.wcomnet.com
Enterprise NOS Services Southeast
Worldcom
Bell 919-377-4881
vnet 966-4881

 
 
 
 


-----Original Message-----
From: linux-lvm-admin@sistina.com [mailto:linux-lvm-admin@sistina.com]
On Behalf Of Jason L Tibbitts III
Sent: Saturday, February 16, 2002 12:18 AM
To: linux-lvm@sistina.com
Subject: Re: [linux-lvm] LVM available on software raid5 (md)


>>>>> "ALN" == Anthony Luke Nelson <tony.nelson@pobox.com> writes:

ALN> Does anyone know if LVM is supported on software raid5.

Works fine for me:

md5 : active raid5 sdh7[1] sdg7[6] sdf7[5] sde7[4] sdd7[3] sdc7[2]
sdb7[7] sda7[0]
      416837376 blocks level 5, 128k chunk, algorithm 2 [7/7] [UUUUUUU]

VG:  nas  [1 PV, 11 LV/10 open]  PE Size: 8192 KB
  Usage [KB/PE]: 416825344 /50882 total  386924544 /47232 used  29900800
/3650 free
  PV:  [AA] md5                   416825344 /50882   386924544 /47232
29900800 /3650

 - J<

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linux-lvm@sistina.com
http://lists.sistina.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO@http://www.sistina.com/lvm/Pages/howto.html

Re: [linux-lvm] LVM available on software raid5 (md)

[Adrian Head]

LVM by itself does not implement RAID5.  What people do is to use the md 
driver (standard Linux software RAID) to create a RAID device and then put 
LVM on top of that.

Hope this helps sorting out the confusion.

On Sun, 17 Feb 2002 01:26, Anthony Luke Nelson wrote:
> OK, thanks.
>
> I was messing with SUSE 7.3 and in their LVM control panel, it only
> seemed to suport linear or striping.
> How have you done yours? Do yo do it from the command line and are any
> specific versions/packages required for this?
> Are you using the Sistina LVM package?
>
>
>
>
> Thanks,
>
>
> ________________________________________________________________________
> __________________
> Anthony Luke Nelson
> "nerd with an attitude"
> tony.nelson@wcom.com
> http://ret.wcomnet.com
> Enterprise NOS Services Southeast
> Worldcom
> Bell 919-377-4881
> vnet 966-4881
>
>
>
>
>
>
>
> -----Original Message-----
> From: linux-lvm-admin@sistina.com [mailto:linux-lvm-admin@sistina.com]
> On Behalf Of Jason L Tibbitts III
> Sent: Saturday, February 16, 2002 12:18 AM
> To: linux-lvm@sistina.com
> Subject: Re: [linux-lvm] LVM available on software raid5 (md)
>
> >>>>> "ALN" == Anthony Luke Nelson <tony.nelson@pobox.com> writes:
>
> ALN> Does anyone know if LVM is supported on software raid5.
>
> Works fine for me:
>
> md5 : active raid5 sdh7[1] sdg7[6] sdf7[5] sde7[4] sdd7[3] sdc7[2]
> sdb7[7] sda7[0]
>       416837376 blocks level 5, 128k chunk, algorithm 2 [7/7] [UUUUUUU]
>
> VG:  nas  [1 PV, 11 LV/10 open]  PE Size: 8192 KB
>   Usage [KB/PE]: 416825344 /50882 total  386924544 /47232 used  29900800
> /3650 free
>   PV:  [AA] md5                   416825344 /50882   386924544 /47232
> 29900800 /3650
>
>  - J<
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@sistina.com
> http://lists.sistina.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html
>
>
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@sistina.com
> http://lists.sistina.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html

-- 
Adrian Head

(Public Key available on request.)

Re: [linux-lvm] LVM available on software raid5 (md)

[Jason L Tibbitts III]

>>>>> "ALN" == Anthony Luke Nelson <tony.nelson@pobox.com> writes:

ALN> I was messing with SUSE 7.3 and in their LVM control
ALN> panel, it only seemed to suport linear or striping.

LVM itself can do striping or concatenation of PVs, but Linux has a
complete software RAID system and it will do RAID5 just fine.  Build a
RAID array and run pvcreate on it.  The Software-RAID-HOWTO has some
useful info on building the array.

 - J<