[linux-lvm] LVM and RAID
Wojtek
wojciech at btclick.com
Sat Nov 8 15:10:01 UTC 2003
Hi Everybody,
I tried it exactly as Martin says and it works until you try to reboot. On
my Red Hat 9 soft RAID would not be restarted since my entry in fstab is in
the form:
/dev/testvg/mylv /export/home ........
I found the work around for that issue ie: since rc.sysinit looks for md
entry in fstab you need to set INFSTAB variable =1 in rc.sysinit then soft
RAID will start and your LVM file system will be mounted.
Since I'm new to the group I hope I'm not saying obvious things. I only had
to do that to get mirroring since I wasn't able to install LVM2 on Red Hat
9.
Regards
Wojtek
----- Original Message -----
From: "Martin Mosny" <mmosny at postel.sk>
To: "Tobias Gablunsky" <linux-lvm at sistina.com>
Sent: Tuesday, November 04, 2003 2:07 PM
Subject: Re: [linux-lvm] LVM and RAID
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> hi all,
>
> > I didn't find clear information about how to use LVM on an (Software)
> > RAID-Mirror (or RAID-5). All I found, were problems: LVM uses Partition
Type
> > 0x8E but Linux Soft-RAID uses 0xFD - this dosn't look very compatible...
A
> > solution would be to use Hardware-RAID of course. But I'm wondering if
there
> > is a way to use Software-RAID and LVM together - I cannot believe that I
am
> > the first one with this question! Am I?
>
> As Goetz Bock say - just use 0xFD for raid
>
> Device Boot Start End Blocks Id System
> /dev/hda3 138 9729 77047740 fd Linux raid autodetect
>
> make all the raid stuff:
>
> raiddev /dev/md1
> raid-level 1
> nr-raid-disks 2
> chunk-size 64k
> persistent-superblock 1
> nr-spare-disks 0
> device /dev/hda3
> raid-disk 0
> device /dev/hdb3
> raid-disk 1
>
> after them make all the lvm stuff
>
> - --
> Best regards
> Martin Mosny
>
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