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Re: [linux-lvm] Stripes and PE's



I had a similar problem.

I fixed it by turning off contiguous
 http://www.redhat.com/archives/linux-lvm/2004-April/msg00050.html

Can't say anyone was particularly helpful about enlightening me <shrug> :)

Maybe you could create a non-striped contiguous over a striped md array?

David


Tyler wrote:


I'm having problems creating a logical volume on a 4 disk SCSI volume group.
I want to use the entire space as 1 LV that is striped, but can't seem to do
it.

I get an error telling me I don't have enough Physical Extents, when I
clearly do.

livecd root # vgdisplay
 --- Volume group ---
 VG Name               group
 System ID
 Format                lvm2
 Metadata Areas        4
 Metadata Sequence No  1
 VG Access             read/write
 VG Status             resizable
 MAX LV                255
 Cur LV                0
 Open LV               0
 Max PV                255
 Cur PV                4
 Act PV                4
 VG Size               13.91 GB
 PE Size               4.00 MB
 Total PE              3560
 Alloc PE / Size       0 / 0
 Free  PE / Size       3560 / 13.91 GB
 VG UUID               DjxWid-oxqx-zol9-Lu8a-CO94-AsBn-c7k3le

livecd root # lvcreate -i4 -I16 -l3560 -nstorage group
 Insufficient allocatable extents suitable for striping for logical volume
storage: 3560 required
livecd root # lvcreate -i4 -I16 -l3000 -nstorage group
 Insufficient allocatable extents suitable for striping for logical volume
storage: 3000 required

Even if I try to use less space then it says I have, it still wont let me.

I've had this error before, but never found a solution.  I also have not
found the solution on the mailing list archives either.  I can create a
contiguous LV, but without striping.  I'd like to have it striped if I
could.

What am I doing wrong?

Tyler

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