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Old 07-10-2012, 08:04 AM   #1
Registered: Dec 2006
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Question How to convert mirrored LMV's LV to fully striped?


I have mirrored LVM's LV, that was creating using command:

lvcreate -n lv_my -L 700G -i3 -I128 vg_my
lvconvert -m1 vg_my/lv_my -b

But when I take a look at my LV, I got:
lvs vg_my -a -o name,devices,segtype
LV Devices Type
lv_my lv_my_mimage_0(0),lv_my_mimage_1(0) mirror
[lv_my_mimage_0] /dev/sdc(0),/dev/sdd(0) striped
[lv_my_mimage_1] /dev/sde(0) linear
[lv_my_mimage_1] /dev/sdf(1) linear
[lv_my_mlog] /dev/sdf(0) linear

So, as you see lv_my_mimage_0 is striped, but lv_my_mimage_1 and lv_my_mimage_1 are linear!

The only way to create fully mirrored and striped LV is to launch:

lvcreate -n lv_my -L 700G -i3 -I128 vg_my -m1

lvs vg_my -a -o name,devices,segtype
LV Devices Type
lv_my lv_my_mimage_0(0),lv_my_mimage_1(0) mirror
[lv_my_mimage_0] /dev/sdc(0),/dev/sdd(0),/dev/sde(0) striped
[lv_my_mimage_1] /dev/sdf(0),/dev/sdg(0),/dev/sdh(0) striped
[lv_my_mlog] /dev/sdh(59734) linear

I need to convert existing striped LV to striped mirrored LV, is any command to do this?
Old 07-10-2012, 08:33 AM   #2
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Check if lvconvert suites

LVCONVERT(8)                                                                                                                                                                        LVCONVERT(8)

       lvconvert - convert a logical volume from linear to mirror or snapshot



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