RAID expansion

Steve Thompson smt at
Tue Feb 23 08:13:44 CST 2010

On Tue, 19 Jan 2010, Jens_Heinz at wrote:

> I once had a similar problem with SuSE I think.
> I was successful using
> 	echo 1 > /sys/block/sdX/device/rescan

I finally got a chance to try this again, and indeed the above command 
before the pvresize works perfectly.

> -----Original Message-----
> I expanded a RAID-6 set by the addition of additional volumes through 
> OMSA. All physical disks were in local slots attached to the same Perc 
> 6/i (no MDx000). The entire disk /dev/sdX (no partitions) was previously 
> made into a single LVM volume group, and remained active throughout this 
> procedure. When completed, "omreport storage vdisk" reported the new and 
> correct size. The new size was not otherwise available to the kernel, 
> however: pvscan reported the old size, pvresize did not resize, 
> /sys/block/sdX/size contained the old size. A pvresize resized the 
> physical volume only after a reboot. What's the trick to making this 
> work without a reboot? I have several RAID sets to resize, where 
> rebooting is not an option. Thanks,

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