I had btrfs send/receive running.
Plugging the power in caused laptop-mode to remount my root partition.
That hung, and in turn all of btrfs hung too.
7668 root btrfs send home_ro.20140523 -
7669 root btrfs receive /mnt/btrfs_po sleep_on_page
12118 root mount /dev/mapper/cryptroot call_rwsem_down_write_failed
10678 merlin mencoder -passlogfile dsc04 sleep_on_page
Clearly, it takes very little for 3.15rc5 to deadlock :(
(I wasn't running balance or snapshot this time)
I was able to kill btrfs send and receive, but mencoder is very hung, and
sync does not finish either:
10654 merlin sync sync_inodes_sb
17191 merlin sync call_rwsem_down_read_failed
I'm not posting the sysrq-w every time, but I have it available if needed.
Marc
--
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems ....
.... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/
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