On Tue, 2011-03-08 at 13:13 -0500, Ric Wheeler wrote: > On 03/08/2011 01:05 PM, Wendy Cheng wrote: > >> On Tue, Mar 08, 2011 at 12:04:25PM -0500, Ric Wheeler wrote: > >>> To make this trivial to do for users, I think that it would be really > >>> nice to have a two-level wrappers for things like resize, add a volume, > >>> shrink, etc. Similar to the way we have mount or fsck invoke file system > >>> specific bits. > >>> Good idea? Bad idea? > > So the "resize" is on the filesystem, not the volume ? The "grow" part > > is probably easy. Unfortunately, the "shrink" may not be easy for some > > of the filesystems: > > > > -- Wendy > > I think any "standard" operation would be allowed to fail with "notsupported" > effectively. Shrink is definitely a challenge & even when it works, it often has > performance implications. > > I think that adding support to fsadm might be the easy path forward, but we > would need to be able to do at least a handful of more advanced things (add a > whole device for example). There's still the problem of moving the underlying device from being a plain block device to being a dm one ... what happened to the idea of presenting all devices as dm ones to solve this? James -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
