Heinz J . Mauelshagen
mauelshagen at sistina.com
Thu Apr 25 04:58:01 UTC 2002
On Wed, Apr 24, 2002 at 12:48:56PM +0530, Chitaranjan Behera, Noida wrote:
> I tried to do lvextend and then lvreduce (same space) without unmounting the
> file system, bcoz of online read/write operation on that file system. System
> seems slow (almost hanged). So can anybody please tell me whether the SAME
> extended block is reduced by the lvreduce command or not.
If you extend a LV, N extents are added to its former end.
If you reduce it by the very same amount N of extents afterwards the very
same N extents are freed.
> And what could be
> the reason of system hang.
Probably locking caused by the filesystem accesses.
Which version of LVM are you using?
Heinz -- The LVM Guy --
> 91-4510701/02 Ext -3159
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Heinz Mauelshagen Sistina Software Inc.
Senior Consultant/Developer Am Sonnenhang 11
Mauelshagen at Sistina.com +49 2626 141200
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