Date: Fri, 22 May 2015 20:27:12 +0000 From: =?utf-8?B?S2FybGkgU2rDtmJlcmc=?= <karli.sjoberg@slu.se> To: Thomas Johnson <tommyj27@gmail.com> Cc: "freebsd-fs@freebsd.org" <freebsd-fs@freebsd.org> Subject: Re: zpool on Dell MD3000 causes frequent hangs Message-ID: <be6b7186-0709-4190-bcda-66c7b4c68872@email.android.com>
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Den 22 maj 2015 9:10 em skrev Thomas Johnson <tommyj27@gmail.com>: > > Hello, > > I am trying to track down an ongoing issue that I've been having, and > looking for any suggestions on a possible cause, or suggestions on how I > might troubleshoot further. > > The issue seems to be related to a Dell MD3000 storage array, which > contains a zpool. It seems that the host attached to the array will > occasionally hang, usually during periods of high disk activity > (annoyingly, usually about 0300). > > When the system hangs, I can ping the host, and switch between virtual > consoles (but not interact with them). The system is otherwise > unresponsive; with no errors reported on the console or logs. The only > remedy I have found is to hard-reset the host. > > I believe this issue is tied to the MD3000. I have tried swapping out SAS > cables, HBAs, the controller on the MD3000, and the host itself. I have > updated all the firmware I can find. Before I upgraded the host OS to > FreeBSD 10.1 (from 10.0) last month, I experienced hangs about once a > month. Since the upgrade, I have seen several events per week. My bet is on this: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=197164 /K > > In addition to the MD3000, I have a set of USB drives that are used in a > rotation as offsite backups for the zpool. I have seen a number of hang > events during zfs send/receive transfers to the USB disk. > > After the most recent hang, I removed two [consumer] SSDs from the pool > that were being used as cache devices. It is too early to tell if this > change had any impact. > > Here is some of the pertinent output from the host. I can provide any other > information that would be helpful. > > root@leopard:/home/tom-> uname -a > FreeBSD leopard 10.1-RELEASE-p9 FreeBSD 10.1-RELEASE-p9 #0 r281232: Tue > Apr 7 17:38:04 CDT 2015 > root@cheshire-b:/pkg/base/obj_10.1-RELEASE-p9/pkg/base/src_10.1-RELEASE-p9/sys/GENERIC > amd64 > root@leopard:/home/tom-> zpool list > NAME SIZE ALLOC FREE FRAG EXPANDSZ CAP DEDUP HEALTH > ALTROOT > backup 5.31T 3.61T 1.70T 22% - 68% 1.00x ONLINE - > jumpdrive_f 2.72T 2.04T 693G 30% - 75% 1.00x ONLINE - > root@leopard:/home/tom-> zpool status backup > pool: backup > state: ONLINE > scan: scrub repaired 0 in 13h15m with 0 errors on Wed May 13 16:17:29 2015 > config: > > NAME STATE READ WRITE CKSUM > backup ONLINE 0 0 0 > da0 ONLINE 0 0 0 > > errors: No known data errors > root@leopard:/home/tom-> zpool get all backup > NAME PROPERTY VALUE SOURCE > backup size 5.31T - > backup capacity 68% - > backup altroot - > default > backup health ONLINE - > backup guid 12638712474922952450 > default > backup version - > default > backup bootfs - > default > backup delegation on > default > backup autoreplace off > default > backup cachefile - > default > backup failmode wait > default > backup listsnapshots off > default > backup autoexpand off > default > backup dedupditto 0 > default > backup dedupratio 1.00x - > backup free 1.70T - > backup allocated 3.61T - > backup readonly off - > backup comment - > default > backup expandsize 0 - > backup freeing 0 > default > backup fragmentation 22% - > backup leaked 0 > default > backup feature@async_destroy enabled local > backup feature@empty_bpobj active local > backup feature@lz4_compress active local > backup feature@multi_vdev_crash_dump enabled local > backup feature@spacemap_histogram active local > backup feature@enabled_txg active local > backup feature@hole_birth active local > backup feature@extensible_dataset enabled local > backup feature@embedded_data active local > backup feature@bookmarks enabled local > backup feature@filesystem_limits enabled local > _______________________________________________ > freebsd-fs@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org"help
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