After much file system correction by e2fsck, it is back. Myth is running. It is using the LV.
That'll teach me to be more careful with fdisk
| LinHES Forums http://forum.linhes.org/ |
|
| Help! I think I stuffed my /myth trying to set up LVM http://forum.linhes.org/viewtopic.php?f=6&t=14523 |
Page 1 of 1 |
| Author: | ffrr [ Fri Mar 09, 2007 10:12 pm ] |
| Post subject: | Help! I think I stuffed my /myth trying to set up LVM |
I was following the wiki howto for lvm (this is on an R5E50 install by the way), and I had added a second physical disk /dev/hdb. I fdisked, pvcreated, vgcreated, lvcreated then put a filesystem on it then, and mounted it, all successfully. I copied all my /myth files to it successfully. I set LVM to start at boot, and enabled DMA, all as per the howto, the rebooted. It came up fine and working on the new LV (I put an extra test file on it to know it was using the new disk for sure). Next I attempted to add my (now spare) old partition to the VG. I used fdisk to delete the old hda3 partition and added a new one. I pvcreated, vgextended, umounted /dev/vg/myth and lvextended, checked and resized the filesystem, then remounted it, all successfully ! I use chown and chgrp to make mythtv the owner and group as suggested. Then I rebooted, and I saw messages about not finding vg as it booted. Now, if I type vgdisplay or vgscan it says Code: root@mythtv:/var/log# vgscan Reading all physical volumes. This may take a while... Couldn't find device with uuid 'FPtUt7-yfix-2Ibv-8nGe-1N5H-cvGA-iqDMxO'. Couldn't find all physical volumes for volume group vg. Couldn't find device with uuid 'FPtUt7-yfix-2Ibv-8nGe-1N5H-cvGA-iqDMxO'. Couldn't find all physical volumes for volume group vg. Volume group "vg" not found root@mythtv:/var/log# vgdisplay Couldn't find device with uuid 'FPtUt7-yfix-2Ibv-8nGe-1N5H-cvGA-iqDMxO'. Couldn't find all physical volumes for volume group vg. Couldn't find device with uuid 'FPtUt7-yfix-2Ibv-8nGe-1N5H-cvGA-iqDMxO'. Couldn't find all physical volumes for volume group vg. Volume group "vg" not found root@mythtv:/var/log# Maybe a clue to what is wrong is here. Looking at hda with fdisk I see Code: Command (m for help): p Disk /dev/hda: 250.0 GB, 250059350016 bytes 255 heads, 63 sectors/track, 30401 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/hda1 * 1 609 4891761 83 Linux /dev/hda2 610 694 682762+ 82 Linux swap / Solaris /dev/hda3 695 30401 238621477+ 5 Extended It is saying it is extended type on hda3. This is wrong isn't it? Edit: some extra info from vgdisplay Code: root@mythtv:/home/mythtv# vgdisplay --partial --verbose
Partial mode. Incomplete volume groups will be activated read-only. Finding all volume groups Finding volume group "vg" Wiping cache of LVM-capable devices Couldn't find device with uuid 'FPtUt7-yfix-2Ibv-8nGe-1N5H-cvGA-iqDMxO'. Couldn't find device with uuid 'FPtUt7-yfix-2Ibv-8nGe-1N5H-cvGA-iqDMxO'. --- Volume group --- VG Name vg System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 4 VG Access read VG Status resizable MAX LV 0 Cur LV 1 Open LV 0 Max PV 0 Cur PV 2 Act PV 2 VG Size 460.45 GB PE Size 8.00 MB Total PE 58937 Alloc PE / Size 58937 / 460.45 GB Free PE / Size 0 / 0 VG UUID jUJkkX-bZoN-OHYB-c7if-WF68-qpcD-8kdFWT --- Logical volume --- LV Name /dev/vg/myth VG Name vg LV UUID qqqpC7-ONQO-H4d0-Z1Fv-iwGM-iSPP-daLeE2 LV Write Access read/write LV Status NOT available LV Size 460.45 GB Current LE 58937 Segments 2 Allocation inherit Read ahead sectors 0 --- Physical volumes --- PV Name /dev/hdb1 PV UUID 5B61BJ-pZzi-qY4V-1cSP-nuGr-U3wg-GBb1mo PV Status allocatable Total PE / Free PE 29809 / 0 PV Name unknown device PV UUID FPtUt7-yfix-2Ibv-8nGe-1N5H-cvGA-iqDMxO PV Status allocatable Total PE / Free PE 29128 / 0 Please help. Is there any way out of this mess? Seems like I could try again to pvcreate the second pv and use the same uuid, but then what happens to the filesystem in the LV (can it just be repaired?) |
|
| Author: | ffrr [ Sat Mar 10, 2007 2:55 am ] |
| Post subject: | |
Heart in mouth, and having read many web pages on lvm stuff, I think I have fixed it. Here's what I did. In outline. I created a logical partition, hda5, on the extended partition hda3, used pvcreate, but forced the same uuid, restored the metadata, and restarted lvm, then I was able to mount /dev/vg/myth (and all my files are there). I am now checking the file system. Code: Commands used
fdisk (and various subcommands to create the logical partition hda5) pvcreate -u <uuid string from lvm config> --restorefile /etc/lvm/backup/vg vgcfgrestore --file /etc/lvm/backup/vg vg /etc/init.d/lvm start mount -a etc |
|
| Author: | ffrr [ Sat Mar 10, 2007 3:34 am ] |
| Post subject: | |
After much file system correction by e2fsck, it is back. Myth is running. It is using the LV. That'll teach me to be more careful with fdisk
|
|
| Author: | Liv2Cod [ Sat Mar 10, 2007 5:47 am ] |
| Post subject: | |
I feel your pain. I did not have any useful knowledge to contribute or I would have posted. I'm glad you got it un-stuffed. |
|
| Page 1 of 1 | All times are UTC - 6 hours |
| Powered by phpBB® Forum Software © phpBB Group http://www.phpbb.com/ |
|