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2014 Mar 19
3
Disk usage incorrectly reported by du
...r investigation I think that the problem is most likely on the
source machine.
Here is the du output for for one directory exhibiting the problem:
#du -h |grep \/51
201M ./51/msg/8
567M ./51/msg/9
237M ./51/msg/6
279M ./51/msg/0
174M ./51/msg/10
273M ./51/msg/2
341M ./51/msg/7
408M ./51/msg/4
222M ./51/msg/11
174M ./51/msg/5
238M ./51/msg/1
271M ./51/msg/3
3.3G ./51/msg
3.3G ./51
after changing the directory and running du again I get different numbers
#cd 51
du -h
306M ./msg/8
676M ./msg/9
351M ./msg/6
338M ./msg/0
347M ./msg/10
394M...
2011 May 13
27
Extremely slow zpool scrub performance
Running a zpool scrub on our production pool is showing a scrub rate
of about 400K/s. (When this pool was first set up we saw rates in the
MB/s range during a scrub).
Both zpool iostat and an iostat -Xn show lots of idle disk times, no
above average service times, no abnormally high busy percentages.
Load on the box is .59.
8 x 3GHz, 32GB ram, 96 spindles arranged into raidz zdevs on OI 147.