On Apr 8, 2009, at 5:59 PM, Miroslav Lachman wrote:
Rsync is used for "snapshots" with --link-dest= (each day has own
directory and all unchenged files are hardlinked to previous day and
I have history of two month back).
Backups are stored on /vol0 with compression enabled. (compression
is enabled on /usr/ports, /usr/src, /var/db/pkg, /vol0)
# df -hi /vol0/
Filesystem Size Used Avail Capacity iused ifree %iused
Mounted on
tank/vol0 2.7T 1.3T 1.3T 50% 17939375 11172232 62% /
vol0
This backup server is in service from october 2008 with just one
panic (kmem related). After proper loader.conf tuning it is working
well.
You might want to look at this commit if you are using rsync --link-
dest and getting kmem panics:
http://svn.freebsd.org/viewvc/base?view=revision&revision=187460
and the MFC:
http://svn.freebsd.org/viewvc/base?view=revision&revision=190837
It seems quite possible to me that kmem panics could be mistakenly
attributed to zfs when the name cache is eating up memory.
Hope that helps.
- Ben
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