https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=220175
Bug ID: 220175
Summary: [iscsi] ctld often gets stuck in a "D" state
Product: Base System
Version: 11.0-RELEASE
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
Env:
====
# uname -a
FreeBSD san01.bsh-ru.playkey.net 11.0-RELEASE-p7 FreeBSD 11.0-RELEASE-p7 #2
r314026M: Wed Mar 29 06:54:29 UTC 2017
[email protected]:/usr/obj/usr/src/sys/SAN amd64
Symtoms:
========
[root@san01:~]# ps ax | grep ctld
838 - Ds 1094:40,74 /usr/sbin/ctld
12354 2 S+ 0:00,00 grep ctld
[root@san01:~]# ps alx | grep ctld
0 838 1 0 21 0 1188720 1173044 cfiscsi_ Ds - 1094:40,74
/usr/sbin/ctld
0 12647 81380 0 20 0 14836 2540 piperd S+ 2 0:00,00
grep ctld
[root@san01:~]# procstat -k 838
PID TID COMM TDNAME KSTACK
838 102821 ctld - mi_switch sleepq_wait _cv_wait
cfiscsi_offline ctl_port_offline ctl_ioctl devfs_ioctl_f kern_ioctl sys_ioctl
amd64_syscall Xfast_syscall
[root@san01:~]# procstat -k 838
PID TID COMM TDNAME KSTACK
838 102821 ctld - mi_switch sleepq_wait _cv_wait
cfiscsi_offline ctl_port_offline ctl_ioctl devfs_ioctl_f kern_ioctl sys_ioctl
amd64_syscall Xfast_syscall
ctld in this state stops reacting on HUPs, still serves the old targets in it's
config but is unable to load any new ones.
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