On 11/3/2012 1:31, Mateusz Guzik wrote:
Currently when you try to take a snapshot, the kernel checks whether SUJ
is enabled on specified mount-point, and if yes it returns EOPNOTSUPP.
See this commit (MFCed as r230725):
http://svnweb.freebsd.org/base?view=revision&revision=230250
Ahhh excellent to hear. I partition manually these days with 9.0-R
because most servers are either using gmirror, which I want setup before
the install, or a RAID card which means partitions need to be aligned to
the stripe boundaries. So I just "newfs -U -L" and keep journaling off
and wouldn't have realized there is at least some mitigation that will
make it into 9.1-R.
I still stand by my feeling that it should not be on by default though,
because it breaks snapshots and by extension dump -L which I consider to
be a pretty awesome feature of FreeBSD. If you have partitions with
enabled it means booting up in single user to undo it which is a hassle
for a server if it's in production (I realize that's a bit whiny :P).
--
Adam Strohl
http://www.ateamsystems.com/
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