topic Re: Mirror disk in Operating System - HP-UX

Mirror disk

Waqar Razi — Mon, 28 Jul 2008 12:20:41 GMT

How can we find that physical volumes in a certain volume group are mirrored or not?

Re: Mirror disk

Oviwan — Mon, 28 Jul 2008 12:36:33 GMT

hey

check with lvdisplay:
lvdisplay -v /dev/vgXX/lvolYY | more

Regards

Re: Mirror disk

Sharma Sanjeev — Mon, 28 Jul 2008 12:38:50 GMT

Hi

Do lvdisplay -v it will show you values Like Mirror Copies

VG Name /dev/vg00
LV Permission read/write
LV Status available/syncd
Mirror copies 1
Consistency Recovery MWC
Schedule parallel
LV Size (Mbytes) 512
Current LE 32
Allocated PE 64
Stripes 0
Stripe Size (Kbytes) 0
Bad block on
Allocation PVG-strict
IO Timeout (Seconds) default

Regards
Sanjeev

Re: Mirror disk

Deepak Kr — Mon, 28 Jul 2008 13:21:12 GMT

Hi Waqar,

You can use following command:

lvdisplay /dev/vg_name/lv_name
or

lvdisplay /dev/vg_name/lv_name|grep "Mirror copies"

Hope this will answer your query!!

Re: Mirror disk

SUDHAKAR_18 — Mon, 28 Jul 2008 13:35:22 GMT

Also check

#lvlnboot -v
#setboot -v

Re: Mirror disk

Sharma Sanjeev — Mon, 28 Jul 2008 13:37:25 GMT

Hi SUDHAKAR

This will only show for Boot Disk :-)

Re: Mirror disk

Sunil Garg — Sat, 02 Aug 2008 19:07:16 GMT

Hi,

We may or may not have all the physical volumes under a Volume Group mirrored. It is better to ask if a particular logical volume is mirrored or not.

Nd that can be identified with lvdisplay command, which lists its description, ranging from size to its data distribution on concerned physical volume.

Re: Mirror disk

Michael Steele_2 — Sat, 02 Aug 2008 21:46:39 GMT

Hi:

Although you can use 'lvdisplay -v' on each lvol this can be a little longer of a search then 'pvdisplay -v' will provide.

a) pvdisplay -v | more (* about 2nd page all the lvols mounted to the PV will appear *)

b) lvdisplay -v /dev/vg##/lvol# | more

first page will have a data field called "mirrors" 1 = mirrored to another pv, 2 to two pv's, 0 to no pv's.

2nd page will list out the name of the pvs