[linux-lvm] Proper way to delete an active snapshot?
Stuart D. Gathman
stuart at bmsi.com
Tue Aug 30 18:18:28 UTC 2011
On Tue, 30 Aug 2011, Linda A. Walsh wrote:
> If you have a snapshot of a volume running... how are you supposed to delete
> i.e. after you unmount it... if I just do a lvremove, I get a warning about
> it being
> an active volume -- so I tried doing a dmsetup remove on it first -- and that
> stops the warning -- but I just noticed, I had a bunch of inactive 'cow'
> volume names under 'dmsetup ls', that referred to the old snapshot names.
> so I'm guessing that using dmsetup to remove the dev first, then lvremove is
> NOT the best way to be doing this...(as it results in stuff that needs to be
> So how do I remove the volume w/o getting warnings about it being 'active'?
I agree that the warning is broken (when LV is not otherwise mounted or open).
/usr/sbin/lvremove -f "$snappath"
in scripts, which suppresses the warning without leaving a mess. I'm not
sure what happens if the LV is actually open in that case. Hopefully
you get an error.
I am on Centos-5.6
Stuart D. Gathman <stuart at bmsi.com>
Business Management Systems Inc. Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flammis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.
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