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...r a utility called xfs_freeze, which freezes the filsystem and makes sure that the filesystem is consistant. It is a bit like a mount -o remount,ro but it does not fail when applications have open files. When we take snapshots of our XFS volume, we do "xfs_freeze -f /mnt/foo; lvcreate -s /dev/vg_foo/bar /dev/vg_foo/bar-snapshot;xfs_freeze -u /mnt/foo". Is such a utility available for Ext3? -- There are only 10 different kinds of people in the world, those who understand binary, and those who don't.

This set of patches: - Adds new APIs to support discard in libguestfs. - Adds discard support to virt-format. - Adds discard support to virt-sysprep. - Implements virt-sparsify --in-place. This is now working, after fixing the rather stupid bug in fstrim. I've pushed the ones which were ACKed previously + the fstrim fix. Rich.

...pod @@ -211,7 +211,7 @@ zeroed, but existing blocks of zeroes will still be sparsified. When using I<--in-place>, the filesystem is ignored completely. In the second form, this ignores the named volume group. Use the -volume group name without the C</dev/> prefix, eg. I<--ignore vg_foo> +volume group name without the F</dev/> prefix, eg. I<--ignore vg_foo> You can give this option multiple times. @@ -408,9 +408,9 @@ You should ensure there is enough free space in the worst case for a full copy of the source disk (I<virtual> size), or else set C<$TMPD...

This still isn't working at the moment. See: http://marc.info/?t=139457409300003&r=1&w=2 This set of patches: - Adds new APIs to support discard in libguestfs. - Adds discard support to virt-format. - Adds discard support to virt-sysprep. - Implements virt-sparsify --in-place. Rich.