On 11/09/2016 14:58, Eric van Gyzen wrote:
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
r...@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@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@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@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
[root@avoriaz ~]# procstat -kk 85656
PID TID COMM TDNAME KSTACK
85656 101112 find - mi_switch+0xd2
sleepq_wait+0x3a sleeplk+0x1b4 __lockmgr_args+0x356 vop_stdlock+0x3c
VOP_LOCK1_APV+0x8d _vn_lock+0x43 vget+0x47 cache_lookup+0x679
vfs_cache_lookup+0xac VOP_LOOKUP_APV+0x87 lookup+0x591 namei+0x572
kern_statat+0xa8 sys_fstatat+0x2c amd64_syscall+0x4ce Xfast_syscall+0xfb
Henri
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