Date: Mon, 2 Jun 2008 16:04:12 +1000 From: "Andrew Hill" <lists@thefrog.net> To: freebsd-fs@freebsd.org Subject: Re: ZFS lockup in "zfs" state Message-ID: <16a6ef710806012304m48b63161oee1bc6d11e54436a@mail.gmail.com> In-Reply-To: <93F07874-8D5F-44AE-945F-803FFC3B9279@thefrog.net> References: <683A6ED2-0E54-42D7-8212-898221C05150@thefrog.net> <20080518124217.GA16222@eos.sc1.parodius.com> <93F07874-8D5F-44AE-945F-803FFC3B9279@thefrog.net>
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some more info... On Mon, May 19, 2008 at 1:11 AM, Andrew Hill <lists@thefrog.net> wrote: > i tend to find that the timeouts occur on one or two disks at once - e.g. > ad0 and 2 will complain of timeouts, and the system locks up shortly > thereafter... after spitting out the usual errors from ad0 and ad2 (in this case) with TIMEOUTs and subsequent FAILUREs on READ_DMA[48] and WRITE_DMA[48]... i got the following panic vm_fault: pager read error, pid 1552 (tlsmgr) ad0: FAILURE - READ_DMA48 timed out LBA=352903900 swap_pager: indefinite wait buffer: bufobj: 0, blkno: 437, size: 4096 ad2: FAILURE - WRITE_DMA timed out LBA=239717693 panic: ZFS: I/O failure (write on <unknown> off 0: zio 0xffffff001d47c810 [L0 ZIL intent log] b000L/b000P DVA[0]=<0:c807795000:d000> zilog uncompressed LE contiguous birth=750230 fill=0 cksum=69f76525a84e1816:f6d86fe1d94cd68c:39:8af): error 5 KDB: enter: panic [thread pid 72 tid 100071 ] Stopped at kdb_enter_why+0x3d: movq $0,0x39b248(%rip) db> generally the lockups don't result in a panic (at least not in the short term of 5-10 minutes), so i can't be sure that this panic is necessarily caused by the same problem, but thought it might be worth posting in case it gives an indication of the location/cause of the deadlock unfortunately i couldn't get a backtrace or core dump for 'political' reasons (the system was required for use by others) but i'll see if i can get a panic happening after-hours to get some more info...
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