lvextend LV created with Extent Based Mirror Stripes?

[Chris Gromala]

Is there any way to use lvextend to extend a LV that was created with the Distributed Allocation policy with extent based mirror stripes??

[Satish Y · Accepted solution]

Yes,
Try following commands:

lvextend -l

lvextend -m

umount

extendfs (like /dev/vg00/rlvol1)

mount

Cheers....
Satish.

[waknine]

you have to modify the /etc/lvmpg file to add any pv and after you use lvextend command with pvg name

A+
Marc

[Dennis Raudenbush]

Chris,
As stated with extend based stripping lvextend will be looking for the vgname your extending to be in the /etc/lvmpvg file. If it isn't you can create one (note no comment lines allowed) for vg02 example:

VG /dev/vg02
PVG PVG02
/dev/dsk/c10t0d0
/dev/dsk/c10t0d1
...
...

Also you should check with lvdisplay -v /dev/vg02/lvol# to see what the disk striping order was, then make /etc/lvmpvg match this. I know we alter the start drive so that the lvols in the vg don't start all on the same one.

then
# lvextend -l <#total> /dev/vg02/lvol<#> PVG02
# extendfs -F /dev/vg02/lvol#

later,
john creighton