Mirror disk

[Waqar Razi]

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

[Oviwan · Accepted solution]

hey

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

Regards

[Sharma Sanjeev]

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

[Deepak Kr]

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!!

[SUDHAKAR_18]

Also check

#lvlnboot -v
#setboot -v

[Sharma Sanjeev]

Hi SUDHAKAR

This will only show for Boot Disk :-)

[Sunil Garg]

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.

[Michael Steele_2]

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