On January 28, 2009 9:41:20 AM -0600 Bob Friesenhahn <bfrie...@simple.dallas.tx.us> wrote: > On Tue, 27 Jan 2009, Frank Cusack wrote: > >> i was wondering if you have a zfs filesystem that mounts in a subdir >> in another zfs filesystem, is there any problem with zfs finding >> them in the wrong order and then failing to mount correctly? > > I have not encountered that problem here and I do have a multilevel mount > heirarchy so I assume that ZFS orders the mounting intelligently.
well, the thing is, if the two filesystems are in different pools (let me repeat the example): On January 27, 2009 10:53:18 PM -0800 Frank Cusack <fcus...@fcusack.com> wrote: > say you have pool1/data which mounts on /data and pool2/foo which > mounts on /data/subdir/foo, what if at boot time, pool2 is imported > first, what happens? /data would exist but /data/subdir wouldn't > exist since pool1/data hasn't been mounted yet. i would not expect zfs to wait for pool1 to show up; that might never happen. so /data/subdir/foo would be created for pool2/foo to be mounted on, at which point there would seem to be a race condition where /data/subdir is on the root filesystem, not the pool1/data filesystem. any data written into /data/subdir at this time will be masked when pool1 is imported. using root zfs pools made me think of this case. also, my mail gets delivered into ~/Maildir, where each homedir is a zfs filesystem, but now i've decided to also create separate zfs filesytems for each mail spool. i still want them visible in each home directory though. previously, i've only mounted filesystems from different pools in different hierarchies. -frank _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
