Aug 01 09:29:59 localhost.localdomain sudo[1875]:    chris : TTY=pts/1
; PWD=/home/chris ; USER=root ; COMMAND=/sbin/btrfs scrub start /mnt/x
Aug 01 09:30:16 localhost.localdomain systemd[1]: user@1000.service:
Killing process 1883 (btrfs) with signal SIGKILL.
Aug 01 09:43:34 localhost.localdomain sudo[2574]:    chris : TTY=pts/1
; PWD=/home/chris ; USER=root ; COMMAND=/sbin/btrfs scrub start /mnt/x
Aug 01 09:43:53 localhost.localdomain systemd[1]: user@1000.service:
Killing process 2579 (btrfs) with signal SIGKILL.
Aug 01 11:41:00 localhost.localdomain sudo[3479]:    chris : TTY=pts/1
; PWD=/home/chris ; USER=root ; COMMAND=/sbin/btrfs fi show
Aug 01 11:41:04 localhost.localdomain sudo[3492]:    chris : TTY=pts/1
; PWD=/home/chris ; USER=root ; COMMAND=/sbin/btrfs balance start
/mnt/x
Aug 01 11:41:14 localhost.localdomain kernel: BTRFS info (device vdb):
relocating block group 24800919552 flags 130
Aug 01 11:41:14 localhost.localdomain kernel: BTRFS info (device vdb):
relocating block group 23727177728 flags 132
Aug 01 11:41:14 localhost.localdomain kernel: BTRFS info (device vdb):
found 6 extents
Aug 01 11:41:14 localhost.localdomain kernel: BTRFS info (device vdb):
relocating block group 21512585216 flags 129
Aug 01 11:41:24 localhost.localdomain kernel: BTRFS info (device vdb):
found 27447 extents
Aug 01 11:41:26 localhost.localdomain kernel: BTRFS info (device vdb):
found 27446 extents
Aug 01 11:41:26 localhost.localdomain kernel: BTRFS info (device vdb):
relocating block group 19365101568 flags 129
Aug 01 11:41:36 localhost.localdomain systemd[1]: user@1000.service:
Killing process 3499 (btrfs) with signal SIGKILL.


It's using SIGKILL. The process goes Z for scrub but nothing happens
for balance. Weird. It's definitely not exempt though. Hmm, when I
don't filter the journal for btrfs...

Aug 01 11:54:38 localhost.localdomain systemd[3623]: Starting Exit the
Session...
Aug 01 11:54:38 localhost.localdomain systemd[3623]: Received
SIGRTMIN+24 from PID 4269 (kill).
Aug 01 11:54:38 localhost.localdomain systemd[1]: user@1000.service:
Killing process 4206 (sudo) with signal SIGKILL.
Aug 01 11:54:38 localhost.localdomain systemd[1]: user@1000.service:
Killing process 4213 (btrfs) with signal SIGKILL.
Aug 01 11:54:38 localhost.localdomain systemd[1]: Stopped User Manager
for UID 1000.
Aug 01 11:54:38 localhost.localdomain audit[1]: SERVICE_STOP pid=1
uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0
msg='unit=user@1000 comm="systemd" exe="/usr/lib/systemd/systemd"
hostname=? addr=? terminal=? res=success'
Aug 01 11:54:38 localhost.localdomain systemd[1]: Removed slice User
Slice of chris.

In this case PID 4213 is the process that's still flipping between
status R and D. Kill is sent, but ignored. But not for scrubbing...


Aug 01 11:58:21 localhost.localdomain systemd[4294]: Starting Exit the
Session...
Aug 01 11:58:21 localhost.localdomain systemd[4294]: Received
SIGRTMIN+24 from PID 4933 (kill).
Aug 01 11:58:21 localhost.localdomain systemd[4301]:
pam_unix(systemd-user:session): session closed for user chris
Aug 01 11:58:21 localhost.localdomain systemd[1]: user@1000.service:
Killing process 4866 (btrfs) with signal SIGKILL.
Aug 01 11:58:21 localhost.localdomain systemd[1]: Stopped User Manager
for UID 1000.
Aug 01 11:58:21 localhost.localdomain audit[1]: SERVICE_STOP pid=1
uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0
msg='unit=user@1000 comm="systemd" exe="/usr/lib/systemd/systemd"
hostname=? addr=? terminal=? res=success'
Aug 01 11:58:21 localhost.localdomain systemd[1]: Removed slice User
Slice of chris.


Must have something to do with the use of & with balance, which scrub
doesn't need to go to the background.




Chris Murphy