> -----Original Message----- > From: Richard Elling [mailto:[email protected]] > Sent: 星期五, 一月 22, 2016 12:02 > To: [email protected] > Subject: Re: [smartos-discuss] Is zfs deadm man timer tunable? > > > > On Jan 21, 2016, at 4:25 AM, Fred Liu <[email protected]> wrote: > > zfs deadman timer is tunable. But if you hit it, you've got problems > that tuning the deadman won't help. > > The tunable is zfs_deadman_synctime_ms, which is milliseconds. > > For example, on a test machine here: > [root@elvis ~]# echo zfs_deadman_synctime_ms/D | mdb -k > zfs_deadman_synctime_ms: > zfs_deadman_synctime_ms: 1000000 > > FYI, you can check on the state of I/Os in the ZIO pipeline and how > long they've been there using the zio_state dcmd. Elvis is not > currently busy or broken, but here is an example: > [root@elvis ~]# echo ::zio_state | mdb -k > ADDRESS TYPE STAGE WAITER > TIME_ELAPSED > ffffff01ada853e0 NULL OPEN - - > ffffff01ada85b10 NULL OPEN - - > > If you see a large TIME_ELAPSED, you can track down the zio in question > for more debugging. > -- richard >
Richard, Many thanks! You have been always helpful since I first touched ZFS many years ago. I am trying intel P3600 NVMe ssd on ZFS. I got several random server reboot every day. And I just captured " panic message: I/O to pool 'zones' appears to be hung" from console. I doubt it is related to NVMe driver or ssd firmware. - SmartOS Live Image v0.147+ build: 20151001T070028Z [root@pluto ~]# echo zfs_deadman_synctime_ms/D | mdb -k zfs_deadman_synctime_ms: zfs_deadman_synctime_ms: 1000000 [root@pluto ~]# echo ::zio_state | mdb -k ADDRESS TYPE STAGE WAITER TIME_ELAPSED fffff08576c15028 NULL OPEN - - fffff08576c153a8 NULL OPEN - - fffff08576c15728 NULL OPEN - - fffff08576c15aa8 NULL OPEN - - fffff08576c15e28 NULL OPEN - - fffff08576c161a8 NULL OPEN - - fffff08576c16528 NULL OPEN - - fffff08576c168a8 NULL OPEN - - fffff08576c16c28 NULL OPEN - - fffff08576c25048 NULL OPEN - - fffff08576c253c8 NULL OPEN - - fffff08576c25748 NULL OPEN - - fffff08576c25ac8 NULL OPEN - - fffff08576c25e48 NULL OPEN - - fffff08576c261c8 NULL OPEN - - fffff08576c26548 NULL OPEN - - fffff08576c268c8 NULL OPEN - - fffff08576c26c48 NULL OPEN - - fffff08576e41028 NULL OPEN - - fffff08576e413a8 NULL OPEN - - fffff08576e41728 NULL OPEN - - fffff08576e428a8 NULL OPEN - - fffff08576e45050 NULL OPEN - - fffff08576e453d0 NULL OPEN - - fffff08576e45750 NULL OPEN - - fffff08576e45ad0 NULL OPEN - - fffff08576e45e50 NULL OPEN - - fffff08576e461d0 NULL OPEN - - fffff08576e46550 NULL OPEN - - fffff08576e468d0 NULL OPEN - - fffff08576e46c50 NULL OPEN - - fffff08576e47038 NULL OPEN - - fffff08576e473b8 NULL OPEN - - fffff08576e47738 NULL OPEN - - fffff08576e47ab8 NULL OPEN - - fffff08576e47e38 NULL OPEN - - fffff08576e481b8 NULL OPEN - - fffff08576e48538 NULL OPEN - - fffff08576e488b8 NULL OPEN - - fffff08576e48c38 NULL OPEN - - fffff08576c4f040 NULL OPEN - - fffff08576c4f3c0 NULL OPEN - - fffff08576c4f740 NULL OPEN - - fffff08576c4fac0 NULL OPEN - - fffff08576c4fe40 NULL OPEN - - fffff08576c501c0 NULL OPEN - - fffff08576c50540 NULL OPEN - - fffff08576c508c0 NULL OPEN - - fffff08576c50c40 NULL OPEN - - fffff08576c53708 NULL OPEN - - fffff08576c53a88 NULL OPEN - - fffff08576c53e08 NULL OPEN - - fffff08576c54188 NULL OPEN - - fffff08576c54508 NULL OPEN - - fffff08576c54888 NULL OPEN - - fffff08576c54c08 NULL OPEN - - fffff08576e5a538 NULL OPEN - - fffff08576e5a8b8 NULL OPEN - - fffff085770bb060 NULL OPEN - - fffff085770bb3e0 NULL OPEN - - fffff085770bb760 NULL OPEN - - fffff085770bbae0 NULL OPEN - - fffff085770bbe60 NULL OPEN - - fffff085770bc1e0 NULL OPEN - - fffff085770bc560 NULL OPEN - - fffff085770bc8e0 NULL OPEN - - fffff085770bcc60 NULL OPEN - - fffff085778c9030 NULL OPEN - - fffff085778c93b0 NULL OPEN - - fffff085778c9730 NULL OPEN - - fffff085778c9ab0 NULL OPEN - - fffff085778c9e30 NULL OPEN - - fffff085778ca1b0 NULL OPEN - - fffff085778ca530 NULL OPEN - - fffff085778ca8b0 NULL OPEN - - fffff085778cac30 NULL OPEN - - fffff085778cd068 NULL OPEN - - fffff085778cd3e8 NULL OPEN - - fffff085778cd768 NULL OPEN - - fffff085778cdae8 NULL OPEN - - fffff085778cde68 NULL OPEN - - fffff085778ce1e8 NULL OPEN - - fffff085778ce568 NULL OPEN - - fffff085778ce8e8 NULL OPEN - - fffff085778cec68 NULL OPEN - - fffff085778d7070 NULL OPEN - - fffff085778d73f0 NULL OPEN - - fffff085778d7770 NULL OPEN - - fffff085778d7af0 NULL OPEN - - fffff085778d7e70 NULL OPEN - - fffff085778d81f0 NULL OPEN - - fffff085778d8570 NULL OPEN - - fffff085778d88f0 NULL OPEN - - fffff085778d8c70 NULL OPEN - - fffff085778d9078 NULL OPEN - - fffff085778d93f8 NULL OPEN - - fffff085778d9778 NULL OPEN - - fffff085778d9af8 NULL OPEN - - fffff085778d9e78 NULL OPEN - - fffff085778da1f8 NULL OPEN - - fffff085778da578 NULL OPEN - - fffff085778da8f8 NULL OPEN - - fffff085778dac78 NULL OPEN - - fffff085772f4570 NULL OPEN - - fffff085772f48f0 NULL OPEN - - fffff08576d57020 NULL OPEN - - fffff08576d58520 NULL OPEN - - fffff08576f77080 NULL OPEN - - fffff08576f77400 NULL OPEN - - fffff08576f77780 NULL OPEN - - fffff08576f77b00 NULL OPEN - - fffff08576f77e80 NULL OPEN - - fffff08576f78200 NULL OPEN - - fffff08576f78580 NULL OPEN - - fffff08576f78900 NULL OPEN - - fffff08576f78c80 NULL OPEN - - fffff085771cf058 NULL OPEN - - fffff085771cf3d8 NULL OPEN - - fffff085771cf758 NULL OPEN - - fffff085771cfad8 NULL OPEN - - fffff085771cfe58 NULL OPEN - - fffff085771d01d8 NULL OPEN - - fffff085771d0558 NULL OPEN - - fffff085771d08d8 NULL OPEN - - fffff085771d0c58 NULL OPEN - - fffff085771d1020 NULL OPEN - - fffff085771d13a0 NULL OPEN - - fffff085771d1720 NULL OPEN - - fffff085771d1aa0 NULL OPEN - - fffff085771d1e20 NULL OPEN - - fffff085771d21a0 NULL OPEN - - fffff085771d2520 NULL OPEN - - fffff085771d28a0 NULL OPEN - - fffff085771d2c20 NULL OPEN - - fffff085771d5000 NULL OPEN - - fffff085771d5380 NULL OPEN - - fffff085771d5700 NULL OPEN - - fffff085771d5a80 NULL OPEN - - fffff085771d5e00 NULL OPEN - - fffff085771d6180 NULL OPEN - - fffff085771d6500 NULL OPEN - - fffff085771d6880 NULL OPEN - - fffff085771d6c00 NULL OPEN - - fffff085771e6c30 NULL OPEN - - Is it possible to trigger a core dump? Coz, I can't get anything from /var/adm/message. Thanks. Fred ------------------------------------------- smartos-discuss Archives: https://www.listbox.com/member/archive/184463/=now RSS Feed: https://www.listbox.com/member/archive/rss/184463/25769125-55cfbc00 Modify Your Subscription: https://www.listbox.com/member/?member_id=25769125&id_secret=25769125-7688e9fb Powered by Listbox: http://www.listbox.com
