[linux-lvm] HELP: LVM1 not starting automatically
Bill Mair
bill.mair at web.de
Sun May 22 10:44:58 UTC 2005
Hi all,
After a HD failure "mid-pvmove" no less, my LVM won't start automatically :(
System: Debian sarge with LVM1.
I knew that a drive was soon to fail due to S.M.A.R.T messages in my
logs, so I was moving everything off the RAID5 to a new
RAID01 (md7).
While I was moving a volume with pvmove I received a dma error from one of
the drives in my RAID5 (md1).
I was in single user mode with the file systems unmounted and it froze
completely.
*GULP*
*SWEAT*
*CURSE*
I had to reset. :(
After the reboot LVM came up as shown below.
I replaced the defective HD and let the RAID5 do it's magic.
The data is OK and so are the partitions, I verified that doing the
following:
# cp /etc/lvmconf/rootgv.conf /etc/lvmtab.d/rootvg
# echo -ne "rootvg\0" >> /etc/lvmtab
# vgchange -a y rootvg
# vgmknodes /dev/rootvg
I then ran fsck no all the file systems and they were fine.
But LVM is still refusing to start automatically.
What can I do to restore LVM to normal operation ?
Oh, and "by accident" I managed to get this for /dev/md5:
*** pvscan -- inactive PV "/dev/md5" is associated to unknown VG
"rootvg" (run vgscan) ***
I think I did a vgextend or something on the wrong vg, and that was
called "testvg" which no longers exists because the testing was
completed, How do I remove /dev/md5 from the pvscan list.
Another thing, in my 1st attempt at getting the LVM up manually I had
typed "vgmknodes /dev/", vgmknodes wiped out ALL of my
devices. I had only "quickly" scanned the docs, maybe a failsafe for the
above mistake should be added.
Below is a load of information I pulled from LVM.
Thanks for any help you can supply, I'm going to have to stop my
migration until the LVM problem is sorted, I don't want to break
something else or some recovery option by continuing.
---Bill
# /etc/init.d/lvm start
Setting up LVM Volume Groups...
vgscan -- only found 0 of 2304 LEs for LV /dev/rootvg/lv_usr (0)
vgscan -- ERROR "vg_read_with_pv_and_lv(): allocated LE of LV" can't get
data of volume group "rootvg" from physical volume(s)
vgscan -- reading all physical volumes (this may take a while...)
vgscan -- "/etc/lvmtab" and "/etc/lvmtab.d" successfully created
vgscan -- WARNING: This program does not do a VGDA backup of your volume
group
vgchange -- ERROR: VGDA in kernel and lvmtab are NOT consistent; please
run vgscan
# vgscan
vgscan -- only found 0 of 2304 LEs for LV /dev/rootvg/lv_usr (0)
vgscan -- ERROR "vg_read_with_pv_and_lv(): allocated LE of LV" can't get
data of volume group "rootvg" from physical volume(s)
vgscan -- reading all physical volumes (this may take a while...)
vgscan -- "/etc/lvmtab" and "/etc/lvmtab.d" successfully created
vgscan -- WARNING: This program does not do a VGDA backup of your volume
group
# cat /proc/mdstat
Personalities : [raid0] [raid1] [raid5]
read_ahead 1024 sectors
# current /
md0 : active raid1 hde1[0] hda1[1]
289024 blocks [2/2] [UU]
# current LVM
md1 : active raid5 hde5[0] hdg5[1] hdc5[3] hda5[2]
232794624 blocks level 5, 4k chunk, algorithm 0 [4/4] [UUUU]
# future /
md2 : active raid1 hdd1[1] hdh1[3] hdf1[2] hdb1[0]
1951744 blocks [4/4] [UUUU]
# swap 0
md3 : active raid1 hdf2[1] hdb2[0]
1951808 blocks [2/2] [UU]
# swap 1
md4 : active raid1 hdd2[0] hdh2[1]
1951808 blocks [2/2] [UU]
# stripe 0
md5 : active raid1 hdf3[1] hdb3[0]
152384448 blocks [2/2] [UU]
# stripe 1
md6 : active raid1 hdd3[0] hdh3[1]
152384448 blocks [2/2] [UU]
# future LVM
md7 : active raid0 md5[0] md6[1]
304768768 blocks 4k chunks
unused devices: <none>
# pvscan
pvscan -- reading all physical volumes (this may take a while...)
pvscan -- inactive PV "/dev/md1" is associated to unknown VG "rootvg"
(run vgscan)
pvscan -- inactive PV "/dev/md5" is associated to unknown VG "rootvg"
(run vgscan)
pvscan -- inactive PV "/dev/md7" is associated to unknown VG "rootvg"
(run vgscan)
pvscan -- total: 3 [803.31 GB] / in use: 3 [803.31 GB] / in no VG: 0 [0]
# pvdata -E /dev/md1
--- List of physical extents ---
PE: 00000 LV: --- LE: -----
.....
PE: 00199 LV: --- LE: -----
PE: 00200 LV: 002 LE: 00000
.....
PE: 05199 LV: 002 LE: 04999
PE: 05200 LV: 003 LE: 00000
.....
PE: 10199 LV: 003 LE: 04999
PE: 10200 LV: 004 LE: 00000
.....
PE: 11449 LV: 004 LE: 01249
PE: 11450 LV: 005 LE: 00000
.....
PE: 12699 LV: 005 LE: 01249
PE: 12700 LV: 006 LE: 00000
.....
PE: 17699 LV: 006 LE: 04999
PE: 17700 LV: --- LE: -----
.....
PE: 18699 LV: --- LE: -----
PE: 18700 LV: 004 LE: 01250
.....
PE: 20747 LV: 004 LE: 03297
PE: 20748 LV: 008 LE: 00000
.....
PE: 21771 LV: 008 LE: 01023
PE: 21772 LV: --- LE: -----
.....
PE: 23051 LV: --- LE: -----
PE: 23052 LV: 010 LE: 00000
.....
PE: 33291 LV: 010 LE: 10239
PE: 33292 LV: --- LE: -----
.....
PE: 56832 LV: --- LE: -----
# pvdata -E /dev/md7
--- List of physical extents ---
PE: 00000 LV: 007 LE: 00000
.....
PE: 00999 LV: 007 LE: 00999
PE: 01000 LV: 001 LE: 00000
.....
PE: 03303 LV: 001 LE: 02303
PE: 03304 LV: --- LE: -----
.....
PE: 03559 LV: --- LE: -----
PE: 03560 LV: 009 LE: 00000
.....
PE: 04583 LV: 009 LE: 01023
PE: 04584 LV: --- LE: -----
.....
PE: 74404 LV: --- LE: -----
# pvdisplay -v /dev/md1
--- Physical volume ---
PV Name /dev/md1
VG Name rootvg
PV Size 222.01 GB [465589248 secs] / NOT usable 4.38 MB
[LVM: 350 KB]
PV# 1
PV Status available
Allocatable yes
Cur LV 7
PE Size (KByte) 4096
Total PE 56833
Free PE 26021
Allocated PE 30812
PV UUID Dc8Z4y-nkvj-0jJ0-laof-uD5W-KLYW-QwqUx3
--- Distribution of physical volume ---
LV Name LE of LV PE for LV
/dev/rootvg/lv_home 5000 5000
/dev/rootvg/lv_progs 5000 5000
/dev/rootvg/lv_media 3298 3298
/dev/rootvg/lv_games 1250 1250
/dev/rootvg/lv_backup 5000 5000
/dev/rootvg/lv_var 1024 1024
/dev/rootvg/lv_40g 10240 10240
--- Physical extents ---
PE LV LE Disk sector
00000 free
.....
00199 free
00200 /dev/rootvg/lv_home 00000 1647360
.....
05199 /dev/rootvg/lv_home 04999 42599168
05200 /dev/rootvg/lv_progs 00000 42607360
.....
10199 /dev/rootvg/lv_progs 04999 83559168
10200 /dev/rootvg/lv_media 00000 83567360
.....
11449 /dev/rootvg/lv_media 01249 93799168
11450 /dev/rootvg/lv_games 00000 93807360
.....
12699 /dev/rootvg/lv_games 01249 104039168
12700 /dev/rootvg/lv_backup 00000 104047360
.....
17699 /dev/rootvg/lv_backup 04999 144999168
17700 free
.....
18699 free
18700 /dev/rootvg/lv_media 01250 153199360
.....
20747 /dev/rootvg/lv_media 03297 169968384
20748 /dev/rootvg/lv_var 00000 169976576
.....
21771 /dev/rootvg/lv_var 01023 178356992
21772 free
.....
23051 free
23052 /dev/rootvg/lv_40g 00000 188850944
.....
33291 /dev/rootvg/lv_40g 10239 272728832
33292 free
.....
56832 free
# pvdisplay -v /dev/md1
--- Physical volume ---
PV Name /dev/md7
VG Name rootvg
PV Size 290.65 GB [609537536 secs] / NOT usable 4.44 MB
[LVM: 418 KB]
PV# 2
PV Status available
Allocatable yes
Cur LV 3
PE Size (KByte) 4096
Total PE 74405
Free PE 70077
Allocated PE 4328
PV UUID 7O6i4f-Ywnx-kYhR-JaE8-uDZo-ryW6-sMn3gx
--- Distribution of physical volume ---
LV Name LE of LV PE for LV
/dev/rootvg/lv_cvs 1000 1000
/dev/rootvg/lv_usr 2304 2304
/dev/rootvg/lv_tmp 1024 1024
--- Physical extents ---
PE LV LE Disk sector
00000 /dev/rootvg/lv_cvs 00000 9088
.....
00999 /dev/rootvg/lv_cvs 00999 8192896
01000 /dev/rootvg/lv_usr 00000 8201088
.....
03303 /dev/rootvg/lv_usr 02303 27067264
03304 free
.....
03559 free
03560 /dev/rootvg/lv_tmp 00000 29172608
.....
04583 /dev/rootvg/lv_tmp 01023 37553024
04584 free
.....
74404 free
# lvdisplay -v /dev/rootvg/lv_usr
--- Logical volume ---
LV Name /dev/rootvg/lv_usr
VG Name rootvg
LV Write Access read/write
LV Status available
LV # 1
# open 0
LV Size 9 GB
Current LE 2304
Allocated LE 2304
Allocation next free
Read ahead sectors 1024
Block device 58:0
--- Distribution of logical volume on 1 physical volume ---
PV Name PE on PV reads writes
/dev/md7 2304 389994 435
--- logical volume i/o statistic ---
389994 reads 435 writes
--- Logical extents ---
LE PV PE reads writes
00000 /dev/md7 01000 3325 197
00001 /dev/md7 01001 15 0
00002 /dev/md7 01002 15 0
00003 /dev/md7 01003 15 0
00004 /dev/md7 01004 800 0
.....
02299 /dev/md7 03299 0 0
02300 /dev/md7 03300 0 0
02301 /dev/md7 03301 0 0
02302 /dev/md7 03302 0 0
02303 /dev/md7 03303 0 0
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