After a forced reboot while my 2.6.12 system was frozen, the JFS formatted LVM2 VG I have created will not mount upon startup. When I use the following command to mount it by hand, I get a generic bad superblock message: pvr ~ # mount -t jfs /dev/myth-video-vg/myth-video /video mount: wrong fs type, bad option, bad superblock on /dev/myth-video-vg/myth-video, missing codepage or other error In some cases useful info is found in syslog - try dmesg | tail or so I ran jfs_fsck on both physical volumes that are part of the VG and one partition had a detectable error that was fixed by replaying the log. Now jfs_fsk reports two clean filesystems. pvr ~ # jfs_fsck /dev/sdb jfs_fsck version 1.1.8, 03-May-2005 processing started: 12/4/2005 10.1.24 Using default parameter: -p The current device is: /dev/sdb Block size in bytes: 4096 Filesystem size in blocks: 61049646 **Phase 0 - Replay Journal Log Filesystem is clean. pvr ~ # jfs_fsck /dev/sda4 jfs_fsck version 1.1.8, 03-May-2005 processing started: 12/4/2005 10.1.31 Using default parameter: -p The current device is: /dev/sda4 Block size in bytes: 4096 Filesystem size in blocks: 16844152 **Phase 0 - Replay Journal Log Filesystem is clean. Despite their cleanliness, they still won't mount. Do I need to go about restoring anything in LVM2 meta data in order to mount? I've read this previous post about using vgcfgrestore and tried it with the newest file in /etc/lvm/archive/, but it had not effect after completing sucessfully. pvr ~ # vgcfgrestore --file /etc/lvm/archive/myth-video-vg_00003.vg myth-video-vg Restored volume group myth-video-vg pvr ~ # mount -t jfs /dev/myth-video-vg/myth-video /video mount: wrong fs type, bad option, bad superblock on /dev/myth-video-vg/myth-video, missing codepage or other error In some cases useful info is found in syslog - try dmesg | tail or so I'm really not sure what I need to do in order to get this VG mounted. Any hints would be greatly appreciated. Here are some diagnostics: pvr ~ # lvscan ACTIVE '/dev/myth-video-vg/myth-video' [297.14 GB] inherit pvr ~ # lvmdiskscan /dev/sda1 [ 39.19 MB] /dev/sda2 [ 964.84 MB] /dev/sda3 [ 9.32 GB] /dev/sda4 [ 64.26 GB] LVM physical volume /dev/sdb [ 232.89 GB] LVM physical volume 0 disks 3 partitions 1 LVM physical volume whole disk 1 LVM physical volume pvr ~ # lvdisplay --- Logical volume --- LV Name /dev/myth-video-vg/myth-video VG Name myth-video-vg LV UUID 4gV513-mE25-gEkf-gCLp-LqWE-XvG8-CXziEv LV Write Access read/write LV Status available # open 0 LV Size 297.14 GB Current LE 76067 Segments 2 Allocation inherit Read ahead sectors 0 Block device 253:0
pvr ~ # pvdisplay --- Physical volume --- PV Name /dev/sdb VG Name myth-video-vg PV Size 232.88 GB / not usable 0 Allocatable yes (but full) PE Size (KByte) 4096 Total PE 59618 Free PE 0 Allocated PE 59618 PV UUID 0SUUxX-EVWj-Mquv-qCnR-NNHb-qMfp-v4uOnZ
--- Physical volume --- PV Name /dev/sda4 VG Name myth-video-vg PV Size 64.25 GB / not usable 0 Allocatable yes (but full) PE Size (KByte) 4096 Total PE 16449 Free PE 0 Allocated PE 16449 PV UUID Bo4us4-JNx7-T71m-H7M6-AxFN-eH4m-1m0zvB
pvr ~ # pvscan PV /dev/sdb VG myth-video-vg lvm2 [232.88 GB / 0 free] PV /dev/sda4 VG myth-video-vg lvm2 [64.25 GB / 0 free] Total: 2 [297.14 GB] / in use: 2 [297.14 GB] / in no VG: 0 [0 ] pvr ~ # vgscan Reading all physical volumes. This may take a while... Found volume group "myth-video-vg" using metadata type lvm2 -- Bill |
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