Requirement to remove a faulty mirrored disk from hp-ux LVM
<root@pdwp1s>/etc # vgdisplay -v /dev/vg00
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c2t0d0":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
--- Volume groups ---
VG Name /dev/vg00
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 10
Open LV 10
Max PV 16
Cur PV 3
Act PV 2
Max PE per PV 4350
VGDA 4
PE Size (Mbytes) 8
Total PE 8680
Alloc PE 7713
Free PE 967
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c2t0d0":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
--- Logical volumes ---
LV Name /dev/vg00/lvol1
LV Status available/stale
LV Size (Mbytes) 504
Current LE 63
Allocated PE 126
Used PV 1
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c2t0d0":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
LV Name /dev/vg00/lvol2
LV Status available/stale
LV Size (Mbytes) 4096
Current LE 512
Allocated PE 1536
Used PV 2
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c2t0d0":
The specified path does not correspond to physical volume attached to
this volume group
What output do you get from this "ioscan" enquiry:
ioscan -fnCdisk
Assuming this is one mirror of the system disc and you have physically removed the disc or corrupted it, this is a delicate sitution. The tactics depend on whether you want to replace the disc or permanently remove the disc. Because you are tempting fate with your cloning guesswork it has to be assumed that this is not a straightforward disc failure.
No this is another set of server on which am testing the clone behaviors ..
Here what have did
# OS data alread in 1 mirrored state
# HAVE mirrored it to one more disk
# AND removed the third disk
# Then have run below script
# sh -x lvmirr_b.sh
## cat lvmirr_b.sh
for i in 1 2 3 4 5 6 7 8 9
do
# lvextend -m 1 /dev/vg00/lvol${i} /dev/dsk/c2t0d0 ## As have extended to -m 2
lvreduce -m 1 -A n -k /dev/vg00/lvol${i} /dev/dsk/c2t0d0
done
# vgreduce -f /dev/dsk/c2t0d0
# mv /etc/lvmtab /etc/lvmtab_9212
# vgscan -v
### And now am getting above error
### Below out for more desc..
# lvdisplay -v /dev/vg00/lvol1
lvdisplay: Warning: couldn't query physical volume "/dev/dsk/c2t0d0":
The specified path does not correspond to physical volume attached to
this volume group
lvdisplay: Warning: couldn't query all of the physical volumes.
--- 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) 504
Current LE 63
Allocated PE 126
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/c2t2d0 63 63
--- Logical extents ---
LE PV1 PE1 Status 1 PV2 PE2 Status 2
00000 /dev/dsk/c2t2d0 00000 current ??? 00000 stale
00001 /dev/dsk/c2t2d0 00001 current ??? 00001 stale
00002 /dev/dsk/c2t2d0 00002 current ??? 00002 stale
.
.
# ioscan -funC disk
Class I H/W Path Driver S/W State H/W Type Description
===========================================================================
disk 41 0/0/1/1.0.0 sdisk CLAIMED DEVICE HP 36.4GST336753LC
/dev/dsk/c1t0d0 /dev/rdsk/c1t0d0
disk 0 0/0/1/1.2.0 sdisk CLAIMED DEVICE HP 36.4GST336753LC
/dev/dsk/c1t2d0 /dev/rdsk/c1t2d0
disk 1 0/0/2/0.2.0 sdisk CLAIMED DEVICE HP 36.4GST336753LC
/dev/dsk/c2t2d0 /dev/rdsk/c2t2d0
disk 2 0/0/2/1.2.0 sdisk CLAIMED DEVICE HP DVD-ROM 305
/dev/dsk/c3t2d0 /dev/rdsk/c3t2d0
disk 3 0/10/0/0.1.0.0.0.0.0 sdisk CLAIMED DEVICE HP A6189B
/dev/dsk/c4t0d0 /dev/rdsk/c4t0d0
When I started mirroring the VG00 on my new disk, the system had already 2 disk in mirrored state ... At that time my mirror value was 1, so while mirroring 3rd disk have used -m 2 .. and my # lvlnboot -v shows all boot order without error .
Then have removed my 3rd disk directly.. without spilting or reducing vg ..
After that had ran above cmnds .. and get stuck .. As I understand now current state is my all mirrored got failed .. only 1 active boot disk is there ... it may be bcz have done wrong vg reduce or lvreduce ..
## Now what I want is to .. remove what error am getting then remirror this OS on second disk .. to safely handover this server ...
##########
lvreduce -m 1 -A n -k /dev/vg00/lvol${i} /dev/dsk/c2t0d0
-A n ::
Do not backup configuration changes after lvreduce ..
-k:: IS to be used when your pv is missing (i.e disk is not there u had removed )
I may repeat myself but if you followed my previous post, where I mentioned how to do the dd, you should have understood why HP did not caution the way you wanted to do the dd.
I have a proper clone of a disk that knows only one disk in vg00, thus no errors
You have a copy of a single disk from a vg00 which is mirrored... (so all will be stale...)
...
Now you havent said since your posts are unclear to me (which boxes are doing what..)
On what box are you working with now. How was it mounted, did you test if you could reboot from the second disk?
On what disk have you booted now?
Is this disk the Primary?
etc...
Subsidiary question: You have nowhere a golden image? even for your production machine?
Are you completely relying on a mirrored rootvg?
This is a test environment on which am testing the clone behavior .. initially on this server 2 hdd with 1 vg00.. which was in mirrored state . have tested server was able to boot on either of single disk ..
Then.. have inserted a new disk and build a new mirrored disk ..bootable ... then without any proper reduce .. have removed that disk and rebooted the server and now am trying to remove the error that am getting with vgdisplay ..
I believe have done some wrong step to reduce the VG and LV mirror path for new disk (that had removed ) and now mirroring is totally broken ... only primary disk is active now now ..
From here I want to ... remove all error from VG and rebuilt the mirroring i.e. as rollback the server it it's initial state ..
Guide me how I can remove all above error (1st Thread) from this server
