[DRBD-user] drbd freeze its filesystem
enrico.morelli at gmail.com
Wed Oct 11 17:24:21 CEST 2006
this is my first post to this ML. I have a drbd 0.7.22 with 18.104.22.168
kernel on two HP DL380 using cciss. I follow some post to found the
best performance and to avoid the freezing of the drbd filesystem
without any solution.
Follow the best performance parameters that I had found.
# drbdsetup /dev/drbd0 show
Lower device: 104:09 (cciss/c0d0p9)
Meta device: internal
Local address: 192.168.0.1:7788
Remote address: 192.168.0.2:7788
Wire protocol: B
timeout = 4.0 sec
connect-int = 10 sec (default)
ping-int = 10 sec (default)
max-epoch-size = 16384
max-buffers = 20480
unplug-watermark = 20480
sndbuf-size = 131070 (default)
ko-count = 0 (default)
rate = 15360 KB/sec
group = 0 (default)
al-extents = 127
# ./dm -a 0 -b 1M -s 500M -y -m -p -o /win_shares/PERFORMANCE_TEST
4.47 MB/sec (524288000 B / 01:51.733163)
During this test if I do a simple 'ls -la' command on a primary node
in the drbd filesystem (/win_shares), it left freezed for around 30
seconds and after display the output. The same thing occurs if I copy
a lot of files on the drbd partition.
Someone has some idea to solve the problem?
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