Locked up processes after upgrade to ZFS v15

[Kai Gallasch]

Am 06.10.2010 um 19:32 schrieb Martin Simmons:

>>>>>> On Wed, 6 Oct 2010 14:28:31 +0200, Kai Gallasch said:
>> 
>> How can I debug this and get further information?
> 
> procstat -k -k $pid will generate a backtrace (or replace $pid by -a for all
> processes).

procstat for process 12111 (state: zfs)
sonnenkraft:~ # procstat -k -k 12111
  PID    TID COMM             TDNAME           KSTACK                       
12111 102385 httpd            -                mi_switch+0x21b sleepq_switch+0x123 sleepq_wait+0x4d __lockmgr_args+0x7ae vop_stdlock+0x39 VOP_LOCK1_APV+0x9b _vn_lock+0x57 vget+0x7b cache_lookup+0x4e0 vfs_cache_lookup+0xc0 VOP_LOOKUP_APV+0xb7 lookup+0x3d3 namei+0x457 vn_open_cred+0x1e3 kern_openat+0x181 syscall+0x102 Xfast_syscall+0xe2

procstat for process 24731 (state: zfsmrb)
# procstat -k -k 24731
  PID    TID COMM             TDNAME           KSTACK                       
24731 102273 httpd            -                mi_switch+0x21b sleepq_switch+0x123 sleepq_wait+0x4d _sleep+0x369 zfs_freebsd_read+0x2a6 VOP_READ_APV+0xaf vnode_pager_generic_getpages+0x3ea VOP_GETPAGES_APV+0xb5 vnode_pager_getpages+0x8c vm_fault+0x685 trap_pfault+0x128 trap+0x52c calltrap+0x8

In my original post I wrote that only apache httpd processes would lock up..
This is wrong. Several other non-httpd processes also got stuck in state zfs or zfsmrb.

 -Kai.