Date: Thu, 28 Jan 2021 13:35:03 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 253063] Hanging zfs processes after upgrade from 12.1 to 12.2-stable Message-ID: <bug-253063-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D253063 Bug ID: 253063 Summary: Hanging zfs processes after upgrade from 12.1 to 12.2-stable Product: Base System Version: 12.2-STABLE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: freebsd-bugs@virtualtec.ch After a recent upgrade from 12.1 to 12.2-stable (stable/12-c1-ge82353f84), several zfs processes hang in different wait channels.=20 This is a system with short of 1000 zfs filesystems, making frequent snapsh= ot based send/receive backups from a primary data pool to a backup pool using znapzend.=20 ps axl | awk '/zfs / { print $9}' | sort | uniq -c 20 rrl->rr_ 28 tq_qdrai 4 tx->tx_s some sample for each: 0 95220 94050 23 28 0 13000 3372 rrl->rr_ D - 0:00.74 zfs recv -F backup1/servi 0 87914 85482 22 25 0 13000 3308 tq_qdrai D - 0:00.55 zfs recv -F backup1/servi 0 77834 77117 3 27 0 13000 2716 tx->tx_s D - 0:00.74 zfs recv -F backup1/servi PID TID COMM TDNAME KSTACK=20=20=20=20=20= =20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20 95220 104268 zfs - mi_switch+0xd4 sleepq_wait+0x2c _cv_wait+0xf2 rrw_enter_read_impl+0x8b zfs_register_callbacks+0x1c6 zfsvfs_setup+0x18 zfs_resume_fs+0xc0 zfs_ioc_recv+0xb53 zfsdev_ioctl+0x62d devfs_ioctl+0xb0 VOP_IOCTL_APV+0x7b vn_ioctl+0x16a devfs_ioctl_f+0x1e kern_ioctl+0x2b7 sys_ioctl+0xfa amd64_syscall+0x387 fast_syscall_common+0xf8=20 87914 103712 zfs - mi_switch+0xd4 sleepq_wait+0x2c _sleep+0x253 taskqueue_drain_all+0xe1 zfsdev_ioctl+0x7e3 devfs_ioctl+0xb0 VOP_IOCTL_APV+0x7b vn_ioctl+0x16a devfs_ioctl_f+0x1e kern_ioctl+0x2b7 sys_ioctl+0xfa amd64_syscall+0x387 fast_syscall_common+0xf= 8=20 77834 104829 zfs - mi_switch+0xd4 sleepq_wait+0x2c _cv_wait+0xf2 txg_wait_synced_impl+0xa9 txg_wait_synced+0xb dsl_sync_task_common+0x230 dsl_sync_task+0x1a dmu_recv_end+0x67 zfs_ioc_recv+0xb3d zfsdev_ioctl+0x62d devfs_ioctl+0xb0 VOP_IOCTL_APV+0x7b vn_ioctl+0x16a devfs_ioctl_f+0x1e kern_ioctl+0x2b7 sys_ioctl+0xfa amd64_syscall+0x387 fast_syscall_common+0xf8=20 this starts to happen after a couple of hours of uptime, not immediately. I= =20 wanted to check my previous 12.1 version, but bectl hangs as well.. These processes are unkillable, and I'll be forced to reboot the system har= d, because it won't shut down properly (at least not within reasonable amount = of time). --=20 You are receiving this mail because: You are the assignee for the bug.=
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