On Sun, Aug 05, 2012 at 07:46:33AM +0200, Stefan Priebe wrote: > Am 05.08.2012 um 00:43 schrieb Dave Chinner <david@xxxxxxxxxxxxx>: > > > On Tue, Jul 31, 2012 at 03:56:54PM +0200, Stefan Priebe - Profihost AG wrote: > >> Hello list, > >> > >> i'm planning to create a couple of VMs with just 30GB of space while > >> using xfs as the main filesystem. > >> > >> Now i alreay know that some of the VMs will grow up to 250GB while > >> resizing the block device and using xfs_growfs. > > > > Just use thin provisioning and make it 250GB to begin with. Thin > > provisioning mades filsystem grow/shrink pretty much redundant.... > > But dm thin isn't stable isn't it? AFAIK, It's mostly stable. > Does xfs reallocate used parts of the block > Device before using new parts? Sometimes. Depends on workload, locality of reference, patterns of freeing and allocation, etc. > Otherwise deleting and recreating files will result in full used space pretty fast. fstrim. dm-thinp supports discard commands just fine. Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
