topic Re: Replace failed drive in root mirror in Operating System - HP-UX

Replace failed drive in root mirror

Ryan Lardinois — Mon, 07 Dec 2009 18:17:52 GMT

The drive I am trying to replace is at /dev/dsk/c3t0d0. It had No_HW in ioscan, so I pulled the drive and replaced it.

Upon inserting the new drive, syslog showed "LVM: VG 64 0x000000: PVLink 31 0x030002 Wrong Disk!"

I attempted "vgcfgrestore -n /dev/vg00 /dev/rdsk/c3t0d0s2" and received "vgcfgrestore: Cannot restore Physical Volume "/dev/dsk/c3t0d0s2",
Detach the PV or detactivate the VG, before restoring the PV."

I did "vgreduce -f /dev/vg00" and am attempting to recreate the mirror from the beginning.

Following the "When Good Disks Go Bad" procedure, I ran idisk with:

3
EFI 500MB
HPUX 100%
HPSP 400MB

Two errors show at the bottom:

idisk: Write of requested data failed(22)
idisk: Failed destroying old alternate GPT

I ran "pvcreate -B /dev/rdsk/c3t0d0s2" and received "pvcreate: Couldn't open physical volume /dev/rdsk/c3t0d0s2: I/O error"

ioscan:
disk 2 0/1/1/0.1.0 sdisk CLAIMED DEVICE HP 146 GST31467
07LC
/dev/dsk/c2t1d0 /dev/rdsk/c2t1d0
/dev/dsk/c2t1d0s1 /dev/rdsk/c2t1d0s1
/dev/dsk/c2t1d0s2 /dev/rdsk/c2t1d0s2
/dev/dsk/c2t1d0s3 /dev/rdsk/c2t1d0s3
disk 1 0/1/1/1.0.0 sdisk CLAIMED DEVICE SEAGATE ST31467
07LC
/dev/dsk/c3t0d0 /dev/rdsk/c3t0d0
/dev/dsk/c3t0d0s1 /dev/rdsk/c3t0d0s1
/dev/dsk/c3t0d0s2 /dev/rdsk/c3t0d0s2
/dev/dsk/c3t0d0s3 /dev/rdsk/c3t0d0s3

diskinfo:
SCSI describe of /dev/rdsk/c3t0d0:
vendor: SEAGATE
product id: ST3146707LC
type: direct access
size: 143374744 Kbytes
bytes per sector: 512

This is a rx4640. any help would be appreciated.

Re: Replace failed drive in root mirror

sujit kumar singh — Mon, 07 Dec 2009 18:50:37 GMT

hi
remve these files:
dev/dsk/c3t0d0s1 /dev/rdsk/c3t0d0s1
/dev/dsk/c3t0d0s2 /dev/rdsk/c3t0d0s2
/dev/dsk/c3t0d0s3 /dev/rdsk/c3t0d0s3

then run
idisk -R /dev/rdsk/c3t0d0
vi /tmp/pdf
3
EFI 500MB
HPUX 100%
HPSP 400MB
save and exit

idisk -wf /tmp/pdf /dev/rdsk/c3t0d0
ioscan
insf -eC diks
ioscan
see the new device files created.

efi_fsinit -d /dev/rdsk/c3t0d0s1
pvcreate -B /dev/rdsk/c3t2d0s2
mkboot -e -l /dev/rdsk/c3t0d0
vi /tmp/auto
boot /satnd/vmunix -lq

save and exit

efi_cp -d /dev/rdsk/c3t0d0s1 /tmp/auto /EFI/HPUX/AUTO

vgextend /dev/vg00 /dev/dsk/c3t2d0s2
for i in /dev/vg00/lvol*
do
lvextend -m 1 $i /dev/rdsk/c3t2d0s2
done
lvlnboot -vR

regards
sujit

Re: Replace failed drive in root mirror

Ryan Lardinois — Mon, 07 Dec 2009 19:29:11 GMT

Removing the files works fine.

"idisk -R /dev/rdsk/c3t0d0" returns:

idisk: Write of requested data failed(22)
idisk: Failed destroying alternate partition table.1

Re: Replace failed drive in root mirror

Torsten. — Mon, 07 Dec 2009 19:37:03 GMT

Read this:

http://docs.hp.com/en/5991-1236/When_Good_Disks_Go_Bad_WP.pdf

At least the "pvchange -a n ..." step is missing.

Re: Replace failed drive in root mirror

Ryan Lardinois — Thu, 07 Jan 2010 16:10:46 GMT

I was able to successfully complete "Mirroring the Root Volume on Integrity Servers" from "When Good Disks Go Bad" after restarting the server.