[linux-lvm] lvm 0.8 to 1.0 transition?
Heinz J . Mauelshagen
mauelshagen at sistina.com
Wed Feb 27 11:43:01 UTC 2002
On Wed, Feb 27, 2002 at 02:39:27PM +0100, Friedrich Lobenstock wrote:
> "Heinz J . Mauelshagen" wrote:
> >
> > In case you just want to update your LVM software, you don't need to
> > vgexport/vgimport your VGs as described under that URL.
> >
> > Presuming that you took backups of your data and metadata (/etc/lvmconf/*)
> > and don't have root on a LV,
>
> Yes root is on a LV on RAID1 and the data is on a LV on another RAID1
>
> # uname -a
> Linux www 2.4.0-test12-pre4-reiserfs-md-fixes #4 Fri Jan 19 14:48:29 CET 2001 i686 unknown
>
> # cat /proc/lvm
> LVM driver version 0.8final (15/02/2000)
>
> Total: 2 VGs 2 PVs 6 LVs (6 LVs open 6 times)
>
> Global: 156410 bytes malloced IOP version: 6 22:43:33 active
>
> VG: system-disk [1 PV, 4 LV/4 open] PE Size: 4096 KB
> Usage [KB/PE]: 9969664 /2434 total 9969664 /2434 used 0 /0 free
> PV: [AA] md1 9969664 /2434 9969664 /2434 0 /0
> LVs: [AWCL ] swap 524288 /128 1x open
> [AWDL ] root 2097152 /512 1x open
> [AWDL ] tmp 524288 /128 1x open
> [AWDL ] var 6823936 /1666 1x open
>
> VG: data-disk [1 PV, 2 LV/2 open] PE Size: 8192 KB
> Usage [KB/PE]: 78143488 /9539 total 55615488 /6789 used 22528000 /2750 free
> PV: [AA] md3 78143488 /9539 55615488 /6789 22528000 /2750
> LVs: [AWDL ] 1 18022400 /2200 1x open
> [AWDL ] 2 37593088 /4589 1x open
>
> # df -h
> Filesystem Size Used Avail Use% Mounted on
> /dev/system-disk/root
> 2.0G 1.5G 522M 75% /
> /dev/md0 50M 37M 13M 74% /boot
> /dev/system-disk/tmp 512M 32M 480M 6% /tmp
> /dev/system-disk/var 6.5G 92M 6.4G 1% /var
> /dev/data-disk/1 17G 12G 5.1G 70% /mount/1
> /dev/data-disk/2 36G 12G 24G 34% /mount/2
>
> /dev/system-disk/ has PV /dev/md1
> /dev/data-disk/ has PV /dev/md3
>
> # cat /proc/mdstat
> Personalities : [raid1]
> read_ahead 1024 sectors
> md0 : active raid1 hdc1[0] hda1[1]
> 51264 blocks [2/2] [UU]
>
> md1 : active raid1 hdc2[0] hda2[1]
> 9970560 blocks [2/2] [UU]
>
> md3 : active raid1 hdg1[1] hde1[0]
> 78150592 blocks [2/2] [UU]
>
> Therefore I will install a new system and I'll just take the disks
> that belong to /dev/md3 and put them in this new system. So I'll
> have the old system to put the disks back if anything goes wrong
> in the new system.
>
> In the new system I just need to pvmove the the data onto the new
> disks, this time hardware RAID instead of software RAID, so no
> fancy stuff to get lilo boot with root on LV.
>
> So how should I do it, just "vgscan;vgchange -ay" or do I need to
> vgexport/vgimport and will this cause troubles?
If you want to move the devices over to another system, vgexport+vgimport
is the recommended way to go.
>
> --
> MfG / Regards
> Friedrich Lobenstock
>
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm at sistina.com
> http://lists.sistina.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html
--
Regards,
Heinz -- The LVM Guy --
*** Software bugs are stupid.
Nevertheless it needs not so stupid people to solve them ***
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Heinz Mauelshagen Sistina Software Inc.
Senior Consultant/Developer Am Sonnenhang 11
56242 Marienrachdorf
Germany
Mauelshagen at Sistina.com +49 2626 141200
FAX 924446
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