Mirrored Root vol grp

[ShivKumar_1]

Experts,
I have a mirrored root volume group with 2 disks. If I extend the lvol size of /usr on th primary disk,
What do I need to do to reflect the same size on the mirrored disk?( I need to have the same size on the /usr )

Thnks

[S.K. Chan · Accepted solution]

If disk A and disk B are mirrored and belongs to vg00 (root volume group), doing an lvextend on any of the lvol will be automatically reflected in the mirrored disk. In other words you don't have to do anything extra, lvextend will take care of it.

[S.K. Chan]

FYI to really confirm /usr (assuming it is on lvol3) is mirrored run this ..

# lvdisplay -v /dev/vg00/lvol3 | more

[Vijeesh CTK]

hi,

when u do lvextend it will take care of mirroring

lvextend -m 1 /dev/vg01/lvolX /dev/dsk/cxtydz

Vijeesh CTK

[Michael Tully]

Hi,

If you increase the size of an already mirrored
volume the mirror will also increase. To increase /usr you will to do one of two things. If you have OnLine JFS not a problem you can do it on the fly. If you haven't you will need to do this in single user mode.

There are some logical volumes that cannot be done with OnLine JFS, and these are ones that
are of the contiguous variety.

[ShivKumar_1]

Experts,
Thnks for the suggestions. Pl consider this discussion thread closed