lvtmtab is out date .....

[AnSi53]

Hi,
after root-mirror-crash, a new disk was plugged in, but the problem ist now, how to recreate the mirror.
vgfcgbackup: /etc/lvmtab is out date with the running kernel: Kernel indicates 2 disks for /dev/vg00; etc/lvmtab has 1 disk.
So far, so good. How can I tell the kernel to switch to 1 ?? grrrrrrrrrr
Andy

[rariasn]

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1039015

rgs,

[AnSi53]

Yes, I know that, but:
Following Physical Volumes ...
Unable to match these Physical Volumes to...
Use the vgimport command to complete
/dev/dsk/c0t5d0 ....
No no no.
The device is NOT in lvmtab, but in /etc/lvmconf/vg00.conf

rgs
Andy

[Geoff Wild]

Try:

mv /etc/lvmtab /etc/lvmtab.bad

vgscan

Rgds...Geoff

[AnSi53]

Comeone guys,
standard-procedure does NOT work.
Any better ideas??
Andy

[rariasn]

Hi AnSi53,

vgcfgrestore -n vg00 /dev/dsk/cxtydz

cxtydz of the disk replaced.

vgchange -a y vg00


rgs,

[rariasn]

sorry,

vgcfgrestore .... /dev/rdsk/cxtydz (raw disk)

rgs,

ran

[IT_2007 · Accepted solution]

yes. Common procedure doesn't work until you remove ghost disk from kernel. I did once. don't remember exact sequence but try this way.

first remove mirror for all logical volumes for ghost disk using lvreduce with "-k" option.

then vgreduce -f /dev/vg00

now /etc/lvmconf/vg00.conf file doesn't have any ghost disks.

do normal procedure to mirror.

[Geoff Wild]

To re-create the mirror, Either try the vgcfgrestore command or do it from scratch..

Example - assuming c2t6d0 failed:

vgcfgrestore -n /dev/vg00 /dev/rdsk/c2t6d0

mkboot /dev/rdsk/c2t6d0

mkboot -a "hpux -lq (;0) /stand/vmunix" /dev/rdsk/c2t6d0

vgchange -a y /dev/vg00

lvlnboot -Rv /dev/vg00

vgsync /dev/vg00



Scratch:

Say /dev/dsk/c0t6d0 is the root disk and /dev/dsk/c3t6d0 is the disk you want to make a mirror of.

1. Create a bootable LVM disk to be used for the mirror.
pvcreate -B /dev/rdsk/c3t6d0
2. Add this disk to the current root volume group.
vgextend /dev/vg00 /dev/dsk/c3t6d0
3. Make the new disk a boot disk.
mkboot -l /dev/rdsk/c3t6d0
4. Copy the correct AUTO file into the new LIF area.
mkboot -a "hpux -lq (;0)/vmunix" /dev/rdsk/c3t6d0
5. Mirror the boot, root and primary swap logical volumes to the new
bootable disk. Ensure that all devices in vg00, such as /usr, /swap,
etc., are mirrored.
The following is an example of mirroring the boot logical volume:
lvextend -m 1 /dev/vg00/lvol1 /dev/dsk/c3t6d0
The following is an example of mirroring the primary swap logical
volume:
lvextend -m 1 /dev/vg00/lvol2 /dev/dsk/c3t6d0
The following is an example of mirroring the root logical volume:
lvextend -m 1 /dev/vg00/lvol3 /dev/dsk/c3t6d0
6. Update the boot information contained in the BDRA for the mirror
copies of boot, primary swap and root.
/usr/sbin/lvlnboot -b /dev/vg00/lvol1
/usr/sbin/lvlnboot -s /dev/vg00/lvol2
/usr/sbin/lvlnboot -r /dev/vg00/lvol3
7. Check if the BDRA is correct.
/usr/sbin/lvlnboot -R /dev/vg00
8. Verify that the mirrors were properly created.
lvlnboot -v /dev/vg00
The output of this command is shown in a display like the following:
Boot Definitions for Volume Group /dev/vg00:
Boot Definitions for Volume Group /dev/vg00:
Physical Volumes belonging in Root Volume Group:
/dev/dsk/c0t6d0 (1/0/0/3/0.6.0) -- Boot Disk
/dev/dsk/c3t6d0 (1/0/1/0/0/1/1.6.0) -- Boot Disk
Boot: lvol1 on: /dev/dsk/c0t6d0
/dev/dsk/c3t6d0
Root: lvol3 on: /dev/dsk/c0t6d0
/dev/dsk/c3t6d0
Swap: lvol2 on: /dev/dsk/c0t6d0
/dev/dsk/c3t6d0
Dump: lvol2 on: /dev/dsk/c0t6d0, 0

vgdisplay -v vg00

Then lvextend for all other lvols:

lvextend -m 1 /dev/vg00/lvol4 /dev/dsk/c3t6d0
lvextend -m 1 /dev/vg00/lvol5 /dev/dsk/c3t6d0
lvextend -m 1 /dev/vg00/lvol6 /dev/dsk/c3t6d0
lvextend -m 1 /dev/vg00/lvol7 /dev/dsk/c3t6d0
lvextend -m 1 /dev/vg00/lvol8 /dev/dsk/c3t6d0
lvextend -m 1 /dev/vg00/lvol9 /dev/dsk/c3t6d0
lvextend -m 1 /dev/vg00/lvol10 /dev/dsk/c3t6d0
lvextend -m 1 /dev/vg00/lvol11 /dev/dsk/c3t6d0

Rgds...Geoff

[AnSi53]

Sorry, but:
vgcfgrestore -n /dev/vg00 /dev/rdsk/c0t5d0 say:
Couldn't query physical volume /dev/dsk/c0t5d0

But volume is inside and CLAIMED

I can extend vg00, but the counter is then in kernel 3, and in lvmtab 2 .......pfzrltfgzrt
grrrrrrrr
Andy

[rariasn]

# ioscan -fnC disk

rgs

[AnSi53]

Thanks a lot all...

the lvreduce with option -k works.
The ghost is gone!

Happy weekend .... puhhhhh
Andy

[AnSi53]

--- :-))

[florin_10]

Hi

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[AnSi53]

I gave 10 to IT_2007, cause he had the best idea .....
Rgs
AnSi53