[linux-lvm] Re: Cannot find out what to use for the volume.

[Gary Desrochers]

Did this make it?  I have did not get it after signing up and I don't see it
in the list.  Oh well, here is the question again.

On Fri, Nov 21, 2008 at 8:34 PM, Gary wrote:

> I had a disk failure for my lvm mirror.  It was between two disks.  This
> was a failure of the primary.
>
> I have been trying to recover the mirror but I cannot find directions as to
> what to do.
>
> Seems like if I create a new partition, give it the old uuid and then try
> to load everything I get superblock errors.
>
> So how do you fix up from a crashed primary mirror?
>
> By the way, what is below is before I make a partition and create it
> properly with the uuid (as all the web pages say to do).
> I have done that but get the file system superblock error when I mount it.
>
> I have not done anything to the other partition but this is what I am
> starting with.
> pvscan
>
>   Couldn't find device with uuid 'xXD0U6-1s5q-avfG-yuHR-CoX0-53Kl-F1WbBy'.
>   Couldn't find device with uuid 'xXD0U6-1s5q-avfG-yuHR-CoX0-53Kl-F1WbBy'.
>   PV unknown device   VG backup_vg            lvm2 [232.84 GB / 20.00 MB
> free]
>   PV /dev/sda6        VG backup_vg            lvm2 [232.84 GB / 24.00 MB
> free]
>   PV /dev/sda5        VG video_volume_group   lvm2 [213.77 GB / 13.77 GB
> free]
>   PV /dev/sdb1                                lvm2 [189.92 GB]
>   Total: 4 [869.36 GB] / in use: 3 [679.44 GB] / in no VG: 1 [189.92 GB]
>
> pvdisplay -v
>     Scanning for physical volume names
>     Wiping cache of LVM-capable devices
>   Couldn't find device with uuid 'xXD0U6-1s5q-avfG-yuHR-CoX0-53Kl-F1WbBy'.
>   Couldn't find device with uuid 'xXD0U6-1s5q-avfG-yuHR-CoX0-53Kl-F1WbBy'.
>   Couldn't find device with uuid 'xXD0U6-1s5q-avfG-yuHR-CoX0-53Kl-F1WbBy'.
>   Couldn't find all physical volumes for volume group backup_vg.
>   Couldn't find device with uuid 'xXD0U6-1s5q-avfG-yuHR-CoX0-53Kl-F1WbBy'.
>   Couldn't find all physical volumes for volume group backup_vg.
>   Can't read backup_vg: skipping
>   Couldn't find device with uuid 'xXD0U6-1s5q-avfG-yuHR-CoX0-53Kl-F1WbBy'.
>   Couldn't find all physical volumes for volume group backup_vg.
>   Couldn't find device with uuid 'xXD0U6-1s5q-avfG-yuHR-CoX0-53Kl-F1WbBy'.
>   Couldn't find all physical volumes for volume group backup_vg.
>   Can't read backup_vg: skipping
>   --- Physical volume ---
>   PV Name               /dev/sda5
>   VG Name               video_volume_group
>   PV Size               213.77 GB / not usable 1.28 MB
>   Allocatable           yes
>   PE Size (KByte)       4096
>   Total PE              54725
>   Free PE               3525
>   Allocated PE          51200
>   PV UUID               nEYdPc-IWr3-oJgf-TFLO-37OC-7vjv-FcbEC7
>
>   --- NEW Physical volume ---
>   PV Name               /dev/sdb1
>   VG Name
>   PV Size               189.92 GB
>   Allocatable           NO
>   PE Size (KByte)       0
>   Total PE              0
>   Free PE               0
>   Allocated PE          0
>   PV UUID               37Mxhe-nxDh-yfPz-61TB-y8OJ-4Jrb-GKckqr
>
>
> vgdisplay -v
>     Finding all volume groups
>     Finding volume group "backup_vg"
>     Wiping cache of LVM-capable devices
>   Couldn't find device with uuid 'xXD0U6-1s5q-avfG-yuHR-CoX0-53Kl-F1WbBy'.
>   Couldn't find all physical volumes for volume group backup_vg.
>   Couldn't find device with uuid 'xXD0U6-1s5q-avfG-yuHR-CoX0-53Kl-F1WbBy'.
>   Couldn't find all physical volumes for volume group backup_vg.
>   Volume group "backup_vg" not found
>     Finding volume group "video_volume_group"
>   --- Volume group ---
>   VG Name               video_volume_group
>   System ID
>   Format                lvm2
>   Metadata Areas        1
>   Metadata Sequence No  30
>   VG Access             read/write
>   VG Status             resizable
>   MAX LV                0
>   Cur LV                1
>   Open LV               1
>   Max PV                0
>   Cur PV                1
>   Act PV                1
>   VG Size               213.77 GB
>   PE Size               4.00 MB
>   Total PE              54725
>   Alloc PE / Size       51200 / 200.00 GB
>   Free  PE / Size       3525 / 13.77 GB
>   VG UUID               ZMY89I-pdP8-QRey-yjx2-Y750-5isR-KOtd10
>
>   --- Logical volume ---
>   LV Name                /dev/video_volume_group/video_logical_volume
>   VG Name                video_volume_group
>   LV UUID                xaHgAn-Onic-uZEj-WAaQ-Cucc-7e8e-pVoo3p
>   LV Write Access        read/write
>   LV Status              available
>   # open                 1
>   LV Size                200.00 GB
>   Current LE             51200
>   Segments               1
>   Allocation             inherit
>   Read ahead sectors     0
>   Block device           253:3
>
>   --- Physical volumes ---
>   PV Name               /dev/sda5
>   PV UUID               nEYdPc-IWr3-oJgf-TFLO-37OC-7vjv-FcbEC7
>   PV Status             allocatable
>   Total PE / Free PE    54725 / 3525
>
> Gary
>
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