Ulrich Spörlein wrote:
Hi,
Hi,
I have to create regular snapshots of several volumes roughly 1.4TB in
size (each). But using mksnap_ffs takes a lot of time (45 minutes) and
it looks like it could be speed up.
[snip]
Another thing is blocking other disk I/O while snapshotting. Right now I did
a ls(1) in the .snap directory, so I understand the filesystem is now suspended.
The workaround would then be to "dont do that". But what if other snapshots are
accessed during that time? I want to provide yesterdays snapshot to our users
while taking the current snapshot and providing access to the newest data at the
same time.
I had seen that a long time ago (on another controller), and it seems it's
not better today, our post from june 2005 without response at the end :
http://docs.freebsd.org/cgi/getmsg.cgi?fetch=410600+0+archive/2005/freebsd-stable/20050612.freebsd-stable
http://docs.freebsd.org/cgi/getmsg.cgi?fetch=463968+0+archive/2005/freebsd-stable/20050612.freebsd-stable
--
Philippe Pegon
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