Messages in this thread | | | Date | Fri, 13 Jan 2006 01:39:18 +1300 | From | Reuben Farrelly <> | Subject | Re: 2.6.15-mm2 |
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On 13/01/2006 1:31 a.m., Ric Wheeler wrote: > Reuben Farrelly wrote: >> On 13/01/2006 12:18 a.m., Tejun Heo wrote: >>> On Thu, Jan 12, 2006 at 09:38:48PM +1300, Reuben Farrelly wrote: >>> [--snip--] >>> >>>> [start_ordered ] f7e8a708 -> c1b028fc,c1b029a4,c1b02a4c infl=1 >>>> [start_ordered ] f74b0e00 0 48869571 8 8 1 1 c1ba9000 >>>> [start_ordered ] BIO f74b0e00 48869571 4096 >>>> [start_ordered ] ordered=31 in_flight=1 >>>> [blk_do_ordered ] start_ordered f7e8a708->00000000 >>>> [blk_do_ordered ] seq=02 f74ccd98->f74ccd98 >>>> [blk_do_ordered ] seq=02 f74ccd98->f74ccd98 >>>> [blk_do_ordered ] seq=02 c1b028fc->00000000 >>>> [blk_do_ordered ] seq=02 c1b028fc->00000000 >>>> [blk_do_ordered ] seq=02 c1b028fc->00000000 >>> >>> >>> Yeap, this one is the offending one. 0xf74ccd98 got requeued in front >>> of pre-flush while draining and when it finished it didn't complete >>> draining thus hanging the queue. It seems like it's some kind of >>> special request which probably fails and got retried. Are you using >>> SMART or something which issues special commands to drives? >> >> >> No SMART, although I should be (rebuilt the system a few months >> ago..and must >> have missed it). >> >> Are there any other things which could be contributing to this? >> <scratches head> >> > Could this be hdparm or something tweaking the drive write cache > settings, etc?
hdparm isn't configured on the box by me or called by initscripts in Fedora either, AFAIK.
reuben
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