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[linux-lvm] Volume group inaccessable after RAID metadice trouble.



Hi!

I have find myself in a troublesome spot. After a disk failure, with lots of IDE bus timeouts etc i managed to get the disk in error replaced and my raid5 set in full operation. But i can't get the volume group active any more. The volume group in question is VG1.

I have read one year worth of messages in this list archives, and i still can't se how i can recover my VG1.

Please find the details below

dent:/etc/lvmconf >sudo pvdata --version
pvdata: Logical Volume Manager 1.0.1-rc4
Heinz Mauelshagen, Sistina Software  03/10/2001 (IOP 10)

dent:/etc/lvmconf >uname -a
Linux dent 2.4.17 #4 Thu Jan 3 00:39:34 CET 2002 alpha unknown
   The kernel is compiled with the  lvm-1.0.1-rc4-2.4.17 patch.

dent:~ >sudo pvscan
Password:
pvscan -- reading all physical volumes (this may take a while...)
pvscan -- inactive PV "/dev/md0" is associated to an unknown VG (run vgscan)
pvscan -- ACTIVE PV "/dev/sda7" of VG "vg0" [1.86 GB / 0 free]
pvscan -- ACTIVE PV "/dev/sda8" of VG "vg0" [1.86 GB / 0 free]
pvscan -- ACTIVE PV "/dev/sda9" of VG "vg0" [68.00 MB / 0 free]
pvscan -- ACTIVE PV "/dev/sda10" of VG "vg0" [68.00 MB / 0 free]
pvscan -- ACTIVE PV "/dev/sda11" of VG "vg0" [68.00 MB / 0 free]
pvscan -- ACTIVE PV "/dev/sda12" of VG "vg0" [68.00 MB / 0 free]
pvscan -- ACTIVE PV "/dev/sda13" of VG "vg0" [56.00 MB / 0 free]
pvscan -- WARNING: physical volume "/dev/hdg1" belongs to a meta device
pvscan -- WARNING: physical volume "/dev/hde1" belongs to a meta device
pvscan -- total: 10 [41.37 GB] / in use: 10 [41.37 GB] / in no VG: 0 [0]



dent:~ >sudo vgscan
vgscan -- reading all physical volumes (this may take a while...)
vgscan -- found active volume group "vg1"
vgscan -- ERROR "lv_read_all_lv(): number of LV" can't get data of volume group "vg1" from physical volume(s)
vgscan -- found active volume group "vg0"
vgscan -- "/etc/lvmtab" and "/etc/lvmtab.d" successfully created
vgscan -- WARNING: This program does not do a VGDA backup of your volume groups


dent:~ >sudo vgchange -a y vg1
vgchange -- volume group "vg1" does not exist

dent:~ >sudo vgcfgrestore  -l -l -n vg1
--- Volume group ---
VG Name               vg1
VG Access             read/write
VG Status             NOT available/resizable
VG #                  1
MAX LV                255
Cur LV                1
Open LV               0
MAX LV Size           255.99 GB
Max PV                255
Cur PV                1
Act PV                1
VG Size               37.29 GB
PE Size               4.00 MB
Total PE              9545
Alloc PE / Size       9324 / 36.42 GB
Free  PE / Size       221 / 884.00 MB
VG UUID               gK6O7c-YSy6-SHqF-6oiZ-L47x-PLqR-JsJzDq

--- Logical volume ---
LV Name                /dev/vg1/lv1
VG Name                vg1
LV Write Access        read/write
LV Status              available
LV #                   1
# open                 0
LV Size                36.42 GB
Current LE             9324
Allocated LE           9324
Allocation             next free
Read ahead sectors     120
Block device           58:1


--- Physical volume --- PV Name /dev/md0 VG Name vg1 PV Size 37.29 GB / NOT usable 5.62 MB [LVM: 161.00 KB] PV# 1 PV Status available Allocatable yes Cur LV 1 PE Size (KByte) 4096 Total PE 9545 Free PE 221 Allocated PE 9324 PV UUID 6qOL59-G611-Groj-PMBU-y4lg-ZtdX-IhaOuQ

dent:~ >cat /proc/mdstat
Personalities : [raid1] [raid5]
read_ahead 1024 sectors
md0 : active raid5 hdg1[2] hdf1[1] hde1[0]
     39102080 blocks level 5, 32k chunk, algorithm 2 [3/3] [UUU]


dent:~ >sudo pvdisplay /dev/md0 --- Physical volume --- PV Name /dev/md0 VG Name vg1 PV Size 37.29 GB / NOT usable 5.62 MB [LVM: 161.00 KB] PV# 1 PV Status available Allocatable yes Cur LV 1 PE Size (KByte) 4096 Total PE 9545 Free PE 221 Allocated PE 9324 PV UUID 6qOL59-G611-Groj-PMBU-y4lg-ZtdX-IhaOuQ


dent:~ >sudo pvdata -v -L /dev/md0


--- List of logical volumes ---

--- Logical volume ---
LV Name                /dev/vg1/lv1
VG Name                vg1
LV Write Access        read/write
LV Status              available
LV #                   1
# open                 0
LV Size                36.42 GB
Current LE             9324
Allocated LE           9324
Allocation             next free
Read ahead sectors     120
Block device           58:0
read_ahead: 120

pvdata -- logical volume struct at offset   1 is empty
pvdata -- logical volume struct at offset   2 is empty
pvdata -- logical volume struct at offset   3 is empty
pvdata -- logical volume struct at offset   4 is empty
-- stuff deleted --
pvdata -- logical volume struct at offset 160 is empty
pvdata -- logical volume struct at offset 161 is inconsistent
pvdata -- logical volume struct at offset 162 is inconsistent
pvdata -- logical volume struct at offset 163 is empty
-- stuff deleted --
pvdata -- logical volume struct at offset 253 is empty
pvdata -- logical volume struct at offset 254 is empty

dent:/etc/lvmconf >sudo pvdata -UPV /dev/md0
--- Physical volume ---
PV Name               /dev/md0
VG Name               vg1
PV Size               37.29 GB / NOT usable 5.62 MB [LVM: 161.00 KB]
PV#                   1
PV Status             available
Allocatable           yes
Cur LV                1
PE Size (KByte)       4096
Total PE              9545
Free PE               221
Allocated PE          9324
PV UUID               6qOL59-G611-Groj-PMBU-y4lg-ZtdX-IhaOuQ

--- Volume group ---
VG Name VG Access read/write
VG Status NOT available/resizable
VG # 0
MAX LV 255
Cur LV 1
Open LV 0
MAX LV Size 255.99 GB
Max PV 255
Cur PV 1
Act PV 1
VG Size 37.29 GB
PE Size 4.00 MB
Total PE 9545
Alloc PE / Size 9324 / 36.42 GB
Free PE / Size 221 / 884.00 MB
VG UUID gK6O7c-YSy6-SHqF-6oiZ-L47x-PLqR-JsJzDq
--- List of physical volume UUIDs ---


001: 6qOL59-G611-Groj-PMBU-y4lg-ZtdX-IhaOuQ


dent:~ >sudo vgcfgrestore -v -n vg1 -t /dev/md0
vgcfgrestore -- locking logical volume manager
vgcfgrestore -- restoring volume group "vg1" from "/etc/lvmconf/vg1.conf"
vgcfgrestore -- checking existence of "/etc/lvmconf/vg1.conf"
vgcfgrestore -- reading volume group data for "vg1" from "/etc/lvmconf/vg1.conf"
vgcfgrestore -- reading physical volume data for "vg1" from "/etc/lvmconf/vg1.conf"
vgcfgrestore -- reading logical volume data for "vg1" from "/etc/lvmconf/vg1.conf"
vgcfgrestore -- checking volume group consistency of "vg1"
vgcfgrestore -- checking volume group consistency of "vg1"
vgcfgrestore -- backup of volume group "vg1" is consistent
vgcfgrestore -- test run for volume group "vg1" end


vgcfgrestore -- unlocking logical volume manager

dent:~ >sudo vgcfgrestore -v -n vg1  /dev/md0
vgcfgrestore -- can't restore part of active volume group "vg1"
vgcfgrestore [-d|--debug] [-f|--file VGConfPath] [-l[l]|--list [--list]]
   [-n|--name VolumeGroupName] [-h|--help]
   [-o|--oldpath OldPhysicalVolumePath] [-t|--test] [-v|--verbose]
   [--version] [PhysicalVolumePath]



Regards Martin




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