On 21.01.2018 23:04, Chris Murphy wrote:
On Sun, Jan 21, 2018 at 8:27 AM, Sebastian Ochmann
<ochm...@cs.uni-bonn.de> wrote:
On 21.01.2018 11:04, Qu Wenruo wrote:

The output of "mount" after setting 10 seconds commit interval:

/dev/sdc1 on /mnt/rec type btrfs
(rw,relatime,space_cache,commit=10,subvolid=5,subvol=/)

I wonder if it gets stuck updating v1 space cache. Instead of trying
v2, you could try nospace_cache mount option and see if there's a
change in behavior.

I tried disabling space_cache, also on a newly formatted volume when first mounting it. However, it doesn't seem to make a difference. Basically the same lags in the same interval, sorry.

Best regards
Sebastian
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