Date: Thu, 02 Jun 2011 21:31:16 +0200 From: Torfinn Ingolfsen <torfinn.ingolfsen@broadpark.no> To: freebsd-stable@freebsd.org Subject: Fileserver panic - FreeBSD 8.1-stable and zfs Message-ID: <20110602213116.425400b6.torfinn.ingolfsen@broadpark.no>
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FYI, in case it is interesting my zfs fileserver[1] just had a panic: (transcribed from screen) panic: kmem_malloc(131072): kmem_map too small: 1324613632 total allocated cpuid = 1 KDB: stack backtrace: #0 0xffffffff805df92e at kdb_backtrace+0x5e #1 0xffffffff805ada77 at panic+0x187 #2 0xffffffff80800190 at kmem_alloc+0 #3 0xffffffff807f7e0a at uma_large_malloc+0x4a #4 0xffffffff8059aee7 at malloc+0xd7 #5 0xffffffff80ed6763 at vdev_queue_io_to_issue+0x1c3 #6 0xffffffff80ed68e9 at vdev_queue_io_done+0x99 #7 0xffffffff80ee6c9f at zio_vdev_io_done+0x7f #8 0xffffffff80ee7237 at zio_execute+0x77 #9 0xffffffff80e872f3 at taskq_run_safe+0x13 #10 0xffffffff805ea984 at taskqueue_run+0xa4 #11 0xffffffff805eabf6 at taskqueue_thread_loop+0x46 #12 0xffffffff80584278 at fork_exit+0x118 #13 0xffffffff8087f2fe at fork_trampoline+0xe Uptime: 109d19h47m1s Cannot dump. Device not defined or unavailable. Automatic reboot in 15 seconds - press a key on the console to abort And the machine hung here, no response from keyboard. The machine runs: root@kg-f2# uname -a FreeBSD kg-f2.kg4.no 8.1-STABLE FreeBSD 8.1-STABLE #4: Fri Oct 29 12:11:48 CEST 2010 root@kg-f2.kg4.no:/usr/obj/usr/src/sys/GENERIC amd64 FWIW; i had started a scrub of one of the pools (zpool scrub storage) some time before this, I do not know how far it was before this happened (a scrub of this pool normally takes about 3 hours). Since the machine was totally unresponsive, I rebooted it. after reboot, I found out that the scrub was not finished: root@kg-f2# zpool status storage pool: storage state: ONLINE scrub: scrub in progress for 307445734561825858h22m, 2.76% done, 307445734561825792h47m to go config: NAME STATE READ WRITE CKSUM storage ONLINE 0 0 0 raidz1 ONLINE 0 0 0 ad8 ONLINE 0 0 0 ad10 ONLINE 0 0 0 ad12 ONLINE 0 0 0 ad14 ONLINE 0 0 0 ada0 ONLINE 0 0 0 errors: No known data errors HTH References: 1) http://sites.google.com/site/tingox/ga-ma74gm-s2h_freebsd -- Regards, Torfinn Ingolfsen
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