pvmove question

[MikeL_4]

I have to move a logical volume from disk to another for performance purposes.

Do I have to unmount the file system for this LV before doing the move ? or is there any other things I may have to look out for ?

[Sanjay_6 · Accepted solution]

Hi Mike,

You can use pvmove without unmounting the filesystem.

The exception to this are,

1 - The volume group is activated in shared mode (this is only possible in a ServiceGuard environment).
2 - Disk striping is being used. To verify that the logical volumes on this disk are not striped, run pvdisplay -v on the disk in question to see what logical volumes are residing on it. Then run lvdisplay on the logical volumes and see what the value of "Stripes" is set to. If it is '0', then striping is not in place.

Hope this helps.

regds

[MikeL_4]

Thanks, that is what I thought but wanted to make sure when your doing this at midnight ....