[Bug 231117] I/O lockups inside bhyve vms

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231117

--- Comment #16 from Kristian K. Christensen <kkc at duckpond.dk> ---
(In reply to Kristian K. Christensen from comment #15)

So, it seems to trigger a lot quicker on newest 12.0-STABLE, my second run on
pkg, which is good news in terms of reproducing I suppose - the bad news is, it
doesn't look much different:

FreeBSD 12.0-RELEASE-p1 r342369 GENERIC  amd64:

pkg (again, pkg tripped up):
  PID    TID COMM                TDNAME              KSTACK                     
 6732 100408 pkg                 -                   mi_switch+0xe1
sleepq_wait+0x2c _cv_wait+0x152 zil_commit_impl+0x94d zfs_freebsd_fsync+0xa7
VOP_FSYNC_APV+0x7e kern_fsync+0x1a0 amd64_syscall+0x369
fast_syscall_common+0x101 


zfskern:
  PID    TID COMM                TDNAME              KSTACK                     
    5 100038 zfskern             arc_reclaim_thread  mi_switch+0xe1
sleepq_timedwait+0x2f _cv_timedwait_sbt+0x17a arc_reclaim_thread+0x146
fork_exit+0x83 fork_trampoline+0xe 
    5 100039 zfskern             arc_dnlc_evicts_thr mi_switch+0xe1
sleepq_wait+0x2c _cv_wait+0x152 arc_dnlc_evicts_thread+0x16f fork_exit+0x83
fork_trampoline+0xe 
    5 100041 zfskern             dbuf_evict_thread   mi_switch+0xe1
sleepq_timedwait+0x2f _cv_timedwait_sbt+0x17a dbuf_evict_thread+0x1c8
fork_exit+0x83 fork_trampoline+0xe 
    5 100058 zfskern             l2arc_feed_thread   mi_switch+0xe1
sleepq_timedwait+0x2f _cv_timedwait_sbt+0x17a l2arc_feed_thread+0x219
fork_exit+0x83 fork_trampoline+0xe 
    5 100307 zfskern             trim zroot          mi_switch+0xe1
sleepq_timedwait+0x2f _cv_timedwait_sbt+0x17a trim_thread+0x11f fork_exit+0x83
fork_trampoline+0xe 
    5 100325 zfskern             txg_thread_enter    mi_switch+0xe1
sleepq_wait+0x2c _cv_wait+0x152 txg_quiesce+0x21b txg_quiesce_thread+0x11b
fork_exit+0x83 fork_trampoline+0xe 
    5 100326 zfskern             txg_thread_enter    mi_switch+0xe1
sleepq_wait+0x2c _cv_wait+0x152 txg_sync_thread+0x13b fork_exit+0x83
fork_trampoline+0xe 
    5 100327 zfskern             solthread 0xfffffff mi_switch+0xe1
sleepq_wait+0x2c _cv_wait+0x152 zthr_procedure+0xcc fork_exit+0x83
fork_trampoline+0xe 
    5 100328 zfskern             solthread 0xfffffff mi_switch+0xe1
sleepq_wait+0x2c _cv_wait+0x152 zthr_procedure+0xcc fork_exit+0x83
fork_trampoline+0xe

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