rsync & kernel panic

[bsd3000]

Hi all

My backupserver:
FreeNAS Build FreeNAS-8.0.2-RELEASE-i386 (8288)
Platform Intel(R) Core(TM)2 CPU 6300 @ 1.86GHz
Memory 2537MB
OS Version FreeBSD 8.2-RELEASE-p3

My ms6 server :
Platform: Intel(R) Core(TM) i3-2100T CPU @ 2.50GHz (2494.36-MHz K8-class CPU)
Memory: 4096 MB
OS Version FreeBSD 8.2-RELEASE-p3


On backupserver I set rsync daemon with this conf:
[root@backup] ~# cat /usr/local/etc/rsyncd.conf

use chroot = yes
max connections = 4
pid file = /var/run/rsyncd.pid

[ms6]
comment = ms6 server
path = /mnt/data/ms6
max connections = 0
uid = root
gid = wheel
read only = false
write only = false

[root@backup] ~# mount
/dev/ufs/FreeNASs1a on / (ufs, local, read-only, soft-updates)
devfs on /dev (devfs, local, multilabel)
/dev/md0 on /etc (ufs, local)
/dev/md1 on /mnt (ufs, local)
/dev/md2 on /var (ufs, local)
/dev/ufs/FreeNASs4 on /data (ufs, local, noatime, soft-updates)
data on /mnt/data (zfs, local)


On my server (ms6) I use something like:
rsync -avp --delete /usr/local/jails/ backupserver::ms6

After one minute of sync (a lot of file need to be synced)
the backupserver make a boooom! with this message:
https://p.twimg.com/AhBOxjxCEAAw7Pz.jpg
(every time I try to do sync)

ms6 server and backup server ram is ok

each server have gigabit link to same HP L2 procurve switch

Where is the problem?

kind regards

 

[AndroidCat]

I would say this is caused by having not enough RAM in your backup server machine as ZFS requires lots of RAM. 32bit version and 2G of RAM may be definitely problematic.
For me to use ZFS I'd use 64bit platform with at least 4G of RAM and more if you have huge pool.

For 32bit and low memory there could be some manual optimization possible and they were discussed here before, please search.
There is also some discussion on FreeBSD forum, e.g. http://forums.freebsd.org/showthread.php?t=15053

 

[bsd3000]

thanks AndroidCat

I will upgrade to 64bit version and add one 4 giga bar ram!

see u

 

[gcooper]

Please update to 8.0.3, go through the tuning document described here: http://wiki.freebsd.org/ZFSTuningGuide , and implement safe caps via loader tunables for your system. ZFS + i386 requires more tuning out of the box than amd64.