Date: Wed, 26 Sep 2012 19:54:31 +0300 From: Nikolay Denev <ndenev@gmail.com> To: Chuck Tuffli <ctuffli@gmail.com> Cc: "freebsd-stable@freebsd.org" <freebsd-stable@freebsd.org> Subject: Re: CAM Target Layer, Linux and camcontrol readcap Message-ID: <8572392631081128705@unknownmsgid> In-Reply-To: <CAKAYmMJtntTKTDr6pROJvRR2DP=n-DoORoYrbNhSYT6EXKMcVA@mail.gmail.com> References: <057A94AC-3CBC-4E91-8816-74EE2E4C8420@gmail.com> <CAKAYmMJrDKpu_wBtpywEmgaCRhdh2th_wrjHzZP26FDSGtui8g@mail.gmail.com> <0546BF68-44E0-4048-AA70-2BD4F707AE06@gmail.com> <CAKAYmMJtntTKTDr6pROJvRR2DP=n-DoORoYrbNhSYT6EXKMcVA@mail.gmail.com>
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On 26.09.2012, at 19:08, Chuck Tuffli <ctuffli@gmail.com> wrote: > On Wed, Sep 26, 2012 at 9:02 AM, Nikolay Denev <ndenev@gmail.com> wrote: > ... >> I've did ctladm dumooa : >> >> Dumping OOA queues >> LUN 0 tag 0x000d RTR: SYNCHRONIZE CACHE(10). CDB: 35 0 0 0 0 0 0 0 0 0 >> (91807313 ms) >> LUN 0 tag 0x0011 BLOCKED: READ CAPACITY(10). CDB: 25 0 0 0 0 0 0 0 0 0 >> (35411180 ms) >> LUN 0 tag 0x0012 BLOCKED: READ CAPACITY(10). CDB: 25 0 0 0 0 0 0 0 0 0 >> (35228663 ms) >> LUN 0 tag 0x0013 BLOCKED: START STOP UNIT. CDB: 1b 0 0 0 1 0 (34721150 ms) >> OOA queues dump done >> >> >> And if I'm reading this right the other commands blocked because of the sync >> cache. >> >> I will try now to set realsync to off before enabling the ports and retest. > > Yup, this is the symptom you will see unless realsync is off (ie. GEOM > is barfing on the sync and this blocks subsequent commands from > completing). > > ---chuck Any idea if the machine can recover from this state without rebooting?
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