Date: Thu, 07 May 2015 15:29:20 +0200 From: "Ronald Klop" <ronald-lists@klop.ws> To: "Slawa Olhovchenkov" <slw@zxy.spb.ru>, "Steven Hartland" <killing@multiplay.co.uk> Cc: freebsd-stable@freebsd.org Subject: Re: zfs, cam sticking on failed disk Message-ID: <op.xx9o261skndu52@ronaldradial.radialsg.local> In-Reply-To: <554B676E.8020500@multiplay.co.uk> References: <20150507095048.GC1394@zxy.spb.ru> <554B40B6.6060902@multiplay.co.uk> <20150507104655.GT62239@zxy.spb.ru> <554B53E8.4000508@multiplay.co.uk> <20150507120508.GX62239@zxy.spb.ru> <554B5BF9.8020709@multiplay.co.uk> <20150507124416.GD1394@zxy.spb.ru> <554B5EB0.1080208@multiplay.co.uk> <20150507125129.GY62239@zxy.spb.ru> <554B6307.9020309@multiplay.co.uk> <20150507131007.GZ62239@zxy.spb.ru> <554B676E.8020500@multiplay.co.uk>
next in thread | previous in thread | raw e-mail | index | archive | help
On Thu, 07 May 2015 15:23:58 +0200, Steven Hartland <killing@multiplay.co.uk> wrote: > > > On 07/05/2015 14:10, Slawa Olhovchenkov wrote: >> On Thu, May 07, 2015 at 02:05:11PM +0100, Steven Hartland wrote: >> >>> >>> On 07/05/2015 13:51, Slawa Olhovchenkov wrote: >>>> On Thu, May 07, 2015 at 01:46:40PM +0100, Steven Hartland wrote: >>>> >>>>>>> Yes in theory new requests should go to the other vdev, but there >>>>>>> could >>>>>>> be some dependency issues preventing that such as a syncing TXG. >>>>>> Currenly this pool must not have write activity (from application). >>>>>> What about go to the other (mirror) device in the same vdev? >>>>>> Same dependency? >>>>> Yes, if there's an outstanding TXG, then I believe all IO will stall. >>>> Where this TXG released? When all devices in all vdevs report >>>> 'completed'? When at the least one device in all vdevs report >>>> 'completed'? When at the least one device in at least one vdev report >>>> 'completed'? >>> When all devices have report completed or failed. >> Thanks for explained. >> >>> Hence if you pull the disk things should continue as normal, with the >>> failed device being marked as such. >> I am have trouble to phisical access. >> May be someone can be suggest software method to forced detach device >> from system. > In 11 that should be possible with devctl, but under 10 I'm not aware of > anything that wouldn't involve some custom kernel level code I'm afraid. > Maybe I'm talking BS here, but does 'camcontrol eject' do something on a disk? Ronald.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?op.xx9o261skndu52>