[linux-lvm] Strange errors trying to mirror

[Bryan Whitehead]

What's up with "-i 5"? Doesn't that map to striping? you can't stripe
across 5 pv's if you only have 2.

On Mon, Apr 5, 2010 at 7:04 AM, Phillip Susi <psusi at cfl.rr.com> wrote:
> I'm trying to mirror my root fs and get errors that make no sense.  What
> am I missing?
>
>  PV         VG   Fmt  Attr PSize   PFree
>  /dev/sda1  vg0  lvm2 a-   111.79G  61.79G
>  /dev/sdb1  vg0  lvm2 a-   111.79G 111.79G
>
> lvconvert -m1 -i 5 vg0/root
>  Insufficient suitable allocatable extents for logical volume : 7680
> more required
>  Unable to allocate extents for mirror(s).
>
> Then I tried explicitly telling it to allocate from sdb1:
>
> lvconvert -m1 -i 5 vg0/root /dev/sdb1
>  Not enough PVs with free space available for parallel allocation.
>  Consider --alloc anywhere if desperate.
>  Unable to allocate extents for mirror(s).
>
> There are two PVs so why does it complain?
>
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