Hello Guys,
I found lvconvert command (in lvm lvm2-2.02.120) did not handle "--stripes"
option correctly.
The reproduce steps are as below,
# vgcreate vgtest /dev/vdb /dev/vdc /dev/vdd /dev/vde /dev/vdf /dev/vdg
# lvcreate -n lvtest -L 8G vgtest
# lvconvert --mirrors 1 --stripes 3 vgtest/lvtest
# lvs -o+stripes
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync
Convert #Str
lvtest vgtest rwi-a-r--- 8.00g 12.21
2
But if you create LV using lvcreate command directly, the command succeeds with
stripes.
e.g.
# lvcreate --mirrors 1 --stripes 3 -L 4G vgtest
# lvs -o+stripes
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync
Convert #Str
lvol0 vgtest rwi-a-r--- 4.01g 8.67
6
I also use lvm2-2.02.180 to reproduce this issue, the lvconvert command works
like before,
but the command will print out a message, like that,
# lvconvert --mirrors 1 --stripes 3 vgtest/lvtest
Command does not accept option: --stripes 3.
Why do we can not use lvconvert to do like that, design issue? but lvcreate can
do that.
What limitations are there between mirrors and stripes?
Thanks
Gang
_______________________________________________
linux-lvm mailing list
[email protected]
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
