[linux-lvm] reduce size of snapshot - what is about previous reduce of file system ?

Lentes, Bernd bernd.lentes at helmholtz-muenchen.de
Thu Aug 28 12:50:00 UTC 2014


i have a lv which has a snapshot. Size of the snapshot was too big while creating. So I'd like now to reduce the size of the snapshot for being able to create a second one. man lvreduce says: Shrinking snapshot logical volumes (...) is supported as well. Ok, that's fine. But normally, before shrinking a lv, the file system has to be reduced. But does the snapshot have a fs ? I never ran a mkfs.xxxx on it. Can I just reduce the size without doing anything before ? Or do I have to provide a -r to lvreduce ?

Thanks for any information.


Bernd Lentes

Institut für Entwicklungsgenetik
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bernd.lentes at helmholtz-muenchen.de
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fax:   +49 89 3187 2294

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