Re: Resize Luns

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On Fri, 2012-12-21 at 14:05 -0800, Andy Grover wrote:
> On 12/20/2012 05:48 AM, Holcombe, Christopher wrote:
> > I haven't tried this out yet, but does LIO have the ability to handle
> > Lun resizing?  I'm not so worried about shrinking but growing would
> > be nice.
> 
> Not without removing, resizing, and re-adding the backstore. But maybe
> using a thin-provisioned backstore might solve the problem in a
> different way?
> 

Not exactly..

LVM block devices w/ IBLOCKexport can be re-sized on the fly w/o
removing + re-adding.  All that is required on the client side is a
re-scan to detect the new READ_CAPACITY size, and then extend the
partition + filesystem.

The same should be true for any IBLOCK + pSCSI device that can change
it's size w/o removing the underlying struct block_device first. (eg:
seperate from target export)

--nab

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