> > This is technically impossible to achieve on ext2, fat or other > > non-transactional filesystems. These filesystems have no locks around code > > paths that set data or inodes dirty. And you still need working sync for > > ext2. So the best thing to do in sync is to wait until the filesystem is > > unfrozen. > Then suspend is effectively unsupported on the filesystem and should > return EOPNOTSUPP? At least that's what I'd expect... > > Honza > -- > Jan Kara <jack@xxxxxxx> > SUSE Labs, CR LVM uses suspend every time it changes layout of the logical volume. For example when it converts to/from mirrored format, extends/shrinks the volume, moves the volume to a different disk, takes a snapshots, merges a snapshot back, on mirror or multipath failover. For most of these actions (except taking a snapshot) it is irrelevant if there are dirty data in the filesystem cache or not while it is suspended. So there is no point in banning suspend on ext2. If you banned it, you couldn't use ext2 on LVM at all. Mikulas -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
