topic Replace Root Mirror disk on RX6600 Server in Operating System - HP-UX

Replace Root Mirror disk on RX6600 Server

Khalid Shakoor — Tue, 07 Jun 2011 06:53:01 GMT

Hi Guruz,

I have rx6600 server having 146 GB x 4 disks and two disks are mirror of other two disks using mirror software and both mirror copies are part of one VG00.

Now the issue is the error message is reported in syslog for I/O error on disk path 0_4_1_0.0.0.2.0 which is part of vg00 and I need to replace the disk. Physically the disk status is good and error message not repeated again in last 24 hours but for CU satisfaction I need to replace.

Can anyone share me the procedure how to identify and replace the root mirror disk in rx6600 server.

Thanks in Advance.
Khalid

Re: Replace Root Mirror disk on RX6600 Server

Torsten. — Tue, 07 Jun 2011 06:58:27 GMT

The document

HP 8 Internal Port SAS Controller and HP
Multi-Port Internal SAS Controller Support
Guide

c02017117

has all the steps - google will help you to find it!

Re: Replace Root Mirror disk on RX6600 Server

Torsten. — Tue, 07 Jun 2011 06:59:15 GMT

Found it:

http://h20000.www2.hp.com/bc/docs/support/SupportManual/c02017117/c02017117.pdf

Re: Replace Root Mirror disk on RX6600 Server

Khalid Shakoor — Tue, 07 Jun 2011 07:16:10 GMT

Thanks Torsten for prompt response but in my case its software mirror using mirror disk UX software .

Regards
Khalid

Re: Replace Root Mirror disk on RX6600 Server

Torsten. — Tue, 07 Jun 2011 07:20:12 GMT

The problem is, the new disk gets a new device file and you need to adjust it - the document has the steps!

Re: Replace Root Mirror disk on RX6600 Server

Torsten. — Tue, 07 Jun 2011 07:22:31 GMT

After you did all the steps, example:

# sasmgr replace_tgt -D /dev/sasd0 -q old_tgt=/dev/dsk/c3t2d0 -q new_tgt_hwpath=0/4/1/0.0.0.1.0

you need to do the "standard" steps, see

When_Good_Disks_Go_Bad_WP
http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c01911837/c01911837.pdf

Re: Replace Root Mirror disk on RX6600 Server

Khalid Shakoor — Tue, 07 Jun 2011 08:07:57 GMT

Thanks Torsten.
What I understand is first I have to update the path using sasmgr replace_target and then
Use vi to create a partition description file by doing the following:

# vi /tmp/partitionfile
The 4 line entry for 11.23 should look like this:
3
EFI 500MB
HPUX 100%
HPSP 400MB
# idisk -wf /tmp/partitionfile /dev/rdsk/cXtXdX
Use insf to create the new device dfiles (cXtXdXs1, cXtXdX2 and cXtXdXs3)
# insf -e
Use mkboot to format and populate the newly created EFI partition:
# mkboot -e -l /dev/dsk/cXtXdX
# pvchange -a n /dev/dsk/cXtXdXs2
# vgcfgrestore -n vg00 /dev/rdsk/cXtXdXs2
# pvchange -a y /dev/dsk/cXtXdXs2
# vgchange -a y vg00
# vgsync vg00
# lvlnboot -r /dev/vg00/lvol3 /dev/vg00
# lvlnboot -b /dev/vg00/lvol1 /dev/vg00
# lvlnboot -s /dev/vg00/lvol2 /dev/vg00
# lvlnboot -d /dev/vg00/lvol2 /dev/vg00
# lvlnboot -v (to verify the results)

Is thatâ s oky or something I am missing ?

Khalid

Re: Replace Root Mirror disk on RX6600 Server

Torsten. — Tue, 07 Jun 2011 08:14:42 GMT

Looks good!

Re: Replace Root Mirror disk on RX6600 Server

Amdocs_case — Tue, 07 Jun 2011 09:13:55 GMT

Turn on the diskÃ¢Â Â s locator LED to ensure the correct disk is removed.

1. Deactivate the failed disk

# pvchange -a n /dev/dsk/cxtxdxs2

2. Confirm the failed disk (eg: here we use sas bay 1)

# sasmgr get_info -D /dev/sasd0 -q lun=all -q lun_locate
# sasmgr get_info -D /dev/sasd0 -q raid

3. Turn on the LED indicator of the failed disk for replacing

# sasmgr set_attr -D /dev/sasd0 -q lun=/dev/rdsk/cxtxdx -q locate_led=on
# sasmgr get_info -D /dev/sasd0 -q lun=all -q lun_locate

Once disk replaced, follow the following procedure

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00872150&cc=us&dlc=en&lc=en&jumpid=reg_R1002_USEN

Re: Replace Root Mirror disk on RX6600 Server

KShakoor — Thu, 21 Jul 2011 06:54:55 GMT

Thanks all of you .Sucessfully replace the Disk :-)