Hi,
My laptop has a small ext4 /boot partition /dev/sda1 and a large btrfs
partition containing / and /home as a sub volume /dev/sda3
When I run scrub on /dev/sda3 and check status with sudo btrfs scrub
status -d /dev/sda3 I get:
scrub status for 3d52dc93-c89f-453f-965d-8601d11e7710
scrub device /dev/sda3 (id 1) history
scrub started at Thu May 14 19:54:02 2015 and finished after 235 seconds
total bytes scrubbed: 111.03GiB with 0 errors
scrub device (id 0) history
scrub started at Thu May 14 19:54:02 2015 and was aborted after 0 seconds
total bytes scrubbed: 0.00B with 0 errors
As device (id 0) is indicated, but I have no idea what it is.
When I run scrub with a script (cron) the same device (id 0) shows up in
a warning:
/etc/cron.daily/btrfs-scrub:
WARNING: device 0 not present
scrub device /dev/sda3 (id 1) done
scrub started at Sat May 2 08:03:46 2015 and finished after 241
seconds
total bytes scrubbed: 109.06GiB with 0 errors
scrub device (id 0) canceled
scrub started at Sat May 2 08:03:46 2015 and was aborted after 0
seconds
total bytes scrubbed: 0.00B with 0 errors
What is this device (id 0) which never gets scrubbed but always shows up?
I'm running Ubuntu 15.04 with the 3.19.0-16-generic kernel.
P.S. I am not a developer.
--
//Christian
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