topic Re: Error Mirror DISK in Operating System - HP-UX

Error Mirror DISK

Daniel Duarte — Thu, 07 Apr 2005 09:37:17 GMT

All

I had a problem with the primary boot disk, now I need rebuild mirror, but I have the following problem.

[/] # lvlnboot -v
lvlnboot: Warning: Can not determine all Physical Volumes on which mirrored copies of
the Logical Volume are located. "/etc/lvmtab" is missing Physical Volumes.
Boot Definitions for Volume Group /dev/vg00:
Physical Volumes belonging in Root Volume Group:
/dev/dsk/c3t3d0 (10/0.3.0)
/dev/dsk/c3t4d0 (10/0.4.0)
/dev/dsk/c3t5d0 (10/0.5.0)
/dev/dsk/c4t3d0 (10/8.3.0)
/dev/dsk/c4t4d0 (10/8.4.0) -- Boot Disk
/dev/dsk/c4t5d0 (10/8.5.0)
/dev/dsk/c4t6d0 (10/8.6.0)
Boot: lvol1 on: /dev/dsk/c4t4d0
Root: lvol3 on: /dev/dsk/c4t4d0
Swap: lvol2 on: /dev/dsk/c4t4d0
Dump: lvol7 on: /dev/dsk/c3t5d0, 0

[/] # lvlnboot -R
Warning: Can not determine all Physical Volumes on which mirrored copies of
the Logical Volume are located. "/etc/lvmtab" is missing Physical Volumes.
Warning: Can not determine all Physical Volumes on which mirrored copies of
the Logical Volume are located. "/etc/lvmtab" is missing Physical Volumes.
Warning: Can not determine all Physical Volumes on which mirrored copies of
the Logical Volume are located. "/etc/lvmtab" is missing Physical Volumes.
vgcfgbackup: /etc/lvmtab is out of date with the running kernel:Kernel indicates 8 disks for "/dev/vg00"; /etc/lvmtab has 7 disks.
Cannot proceed with backup.

[/etc] # strings lvmtab
/dev/vg00
/dev/dsk/c3t3d0
/dev/dsk/c3t4d0
/dev/dsk/c3t5d0
/dev/dsk/c4t3d0
/dev/dsk/c4t4d0
/dev/dsk/c4t5d0
/dev/dsk/c4t6d0

[/etc] # lvdisplay -v /dev/vg00/lvol1
--- Logical volumes ---
LV Name /dev/vg00/lvol1
VG Name /dev/vg00
LV Permission read/write
LV Status available/stale
Mirror copies 1
Consistency Recovery MWC
Schedule parallel
LV Size (Mbytes) 48
Current LE 12
Allocated PE 24
Stripes 0
Stripe Size (Kbytes) 0
Bad block off
Allocation strict/contiguous
IO Timeout (Seconds) default

--- Distribution of logical volume ---
PV Name LE on PV PE on PV
/dev/dsk/c4t4d0 12 12

--- Logical extents ---
LE PV1 PE1 Status 1 PV2 PE2 Status 2
00000 ??? 00000 stale /dev/dsk/c4t4d0 00000 current
00001 ??? 00001 stale /dev/dsk/c4t4d0 00001 current
00002 ??? 00002 stale /dev/dsk/c4t4d0 00002 current
00003 ??? 00003 stale /dev/dsk/c4t4d0 00003 current
00004 ??? 00004 stale /dev/dsk/c4t4d0 00004 current
00005 ??? 00005 stale /dev/dsk/c4t4d0 00005 current
00006 ??? 00006 stale /dev/dsk/c4t4d0 00006 current
00007 ??? 00007 stale /dev/dsk/c4t4d0 00007 current
00008 ??? 00008 stale /dev/dsk/c4t4d0 00008 current
00009 ??? 00009 stale /dev/dsk/c4t4d0 00009 current
00010 ??? 00010 stale /dev/dsk/c4t4d0 00010 current
00011 ??? 00011 stale /dev/dsk/c4t4d0 00011 current

How could I fix this ?

Thanks..

Daniel

Re: Error Mirror DISK

RAC_1 — Thu, 07 Apr 2005 10:06:06 GMT

lvreduce -m 0 -k /dev/vg00/lvolx
Do this for all lvols. Then move the /etc/lvmtab and do vgscan -a

Replace the disk and follow the mirror procedure.

Anil

Re: Error Mirror DISK

Thayanidhi — Thu, 07 Apr 2005 10:07:36 GMT

Run diskinfo /dev/rdsk/... for all the disks in vg00. I feel one of the disk where lvol1 lies have problem. If all disks returns valid value then run pvdisplay for all disks.

May be you need re-create the mirror

Regds
TT

Re: Error Mirror DISK

Uday_S_Ankolekar — Thu, 07 Apr 2005 10:10:37 GMT

You may have a bad disk out there. Once you replace it you can work on mirroring.

-USA..

Re: Error Mirror DISK

Daniel Duarte — Thu, 07 Apr 2005 10:20:38 GMT

[/] # lvreduce -m 0 -k /dev/vg00/lvol1
Physical extents on remaining physical volumes are stale or
Remaining physical volumes are not responding.
lvreduce: The LVM device driver failed to reduce mirrors on
the logical volume "/dev/vg00/lvol1".
-----------------------------------------
We have no problem with diskinfo to disks.
-----------------------------------------

Re: Error Mirror DISK

Daniel Duarte — Thu, 07 Apr 2005 10:23:53 GMT

The disk with problem has changed, I need to rebuild the mirror.

Daniel

Re: Error Mirror DISK

Thayanidhi — Thu, 07 Apr 2005 10:28:24 GMT

The replaced disk is in same position? (same device file)?
pvdisplay of each PV will give idea of the layout.
If it's already replced try vgcfgrestore.

Regds
TT

Re: Error Mirror DISK

Thayanidhi — Thu, 07 Apr 2005 10:36:16 GMT

Please post "vgdisplay -v" if it's not able to query some disks you can reduce them by running "vgreduce -f"(provided if there is extend on the disk). Refer to the man pages.