On 03/09/2011 04:13 PM, Ric Wheeler wrote: > On 03/09/2011 09:23 AM, Alasdair G Kergon wrote: >> On Tue, Mar 08, 2011 at 10:05:40AM -0800, Wendy Cheng wrote: >>> 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: >> The LVM situation today works both ways around. >> >> You can use 'lvresize' with an option to resize the filesystem too, >> or use 'fsadm' with an option to resize the LV. We felt that 'fsadm' >> was a more-natural approach: allow the user to resize their filesystem >> and automatically adjust the things underneath as necessary. >> >> Long term, we'd like it to be possible to configure a system for resizing >> entire device stacks both top down (fsadm) and bottom up (triggered by >> the >> appropriate Unit Attention). >> >> (The current fsadm script was written as a proof-of-concept under the >> constraint of just wrapping existing binaries. Of course there are >> cleaner >> ways to do it when you allow filesystem-specific code.) >> >> Alasdair > > Is anyone actively looking at taken it beyond proof of concept? > I'm working on the kernel-side parts, namely pushing unit attention events out to userspace via debugfs. There'll be daemon reading those and eventually triggering the appropriate action. We could hold a BoF at LSF or Collab summit, seeing that there is quite some interest in these kind of things. Cheers, Hannes -- Dr. Hannes Reinecke zSeries & Storage hare@xxxxxxx +49 911 74053 688 SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: Markus Rex, HRB 16746 (AG Nürnberg) -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
