On 11/09/2016 07:48, Henri Hennebert wrote:> I encounter a strange deadlock on
>
> FreeBSD avoriaz.restart.bel 11.0-RELEASE-p3 FreeBSD 11.0-RELEASE-p3 #0
r308260:
> Fri Nov 4 02:51:33 CET 2016
> root at avoriaz.restart.bel:/usr/obj/usr/src/sys/AVORIAZ amd64
>
> This system is exclusively running on zfs.
>
> After 3 or 4 days, `periodic daily` is locked in the directory
/usr/local/news/bin
>
> [root at avoriaz ~]# ps xa|grep find
> 85656 - D 0:01.13 find / ( ! -fstype local -o -fstype rdonly )
-prune
> -o ( -name [#,]* -o -name .#* -o -name a.out -o -nam
> 462 1 S+ 0:00.00 grep find
> [root at avoriaz ~]# procstat -f 85656
> PID COMM FD T V FLAGS REF OFFSET PRO NAME
> 85656 find text v r r------- - - - /usr/bin/find
> 85656 find cwd v d r------- - - - /usr/local/news/bin
> 85656 find root v d r------- - - - /
> 85656 find 0 v c r------- 3 0 - /dev/null
> 85656 find 1 p - rw------ 1 0 - -
> 85656 find 2 v r -w------ 7 17 - -
> 85656 find 3 v d r------- 1 0 - /home/root
> 85656 find 4 v d r------- 1 0 - /home/root
> 85656 find 5 v d r----n-- 1 533545184 -
/usr/local/news/bin
> [root at avoriaz ~]#
>
> If I try `ls /usr/local/news/bin` it is also locked.
>
> After `shutdown -r now` the system remain locked after the line '0 0 0
0 0 0'
>
> After a reset and reboot I can access /usr/local/news/bin.
>
> I delete this directory and reinstall the package `portupgrade -fu
news/inn`
>
> 5 days later `periodic daily`is locked on the same directory :-o
>
> Any idea?
I can't help with the deadlock, but someone who _can_ help will probably ask
for
the output of "procstat -kk PID" with the PID of the "find"
process.
Eric