Date: Fri, 22 Jan 2010 08:48:33 -0800 From: Freddie Cash <fjwcash@gmail.com> To: FreeBSD-Current <freebsd-current@freebsd.org>, FreeBSD Stable <freebsd-stable@freebsd.org> Subject: Re: Pack of CAM improvements Message-ID: <b269bc571001220848v6ff9279dj5a5c841068738a1a@mail.gmail.com> In-Reply-To: <4B597CBB.5040900@omnilan.de> References: <4B55D9D4.1000008@FreeBSD.org> <4B597CBB.5040900@omnilan.de>
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On Fri, Jan 22, 2010 at 2:23 AM, Harald Schmalzbauer < h.schmalzbauer@omnilan.de> wrote: > Alexander Motin schrieb am 19.01.2010 17:12 (localtime): > ... > > Patch can be found here: >> http://people.freebsd.org/~mav/cam-ata.20100119.patch >> >> Feedback as always welcome. >> > > Again, thanks a lot for your ongoing great work! > The patch doesn't cleanly apply with vpo, but I don't use vpo so I didn't > care. > Otherwise I couldn't find any problems. > The system detects reinserted SATA drives on ICH9 fine. > > This was tested on a zfs backup server which went to the backbone > yesterday, so I can't physically remove any devices any more for testing... > > But I had some questions about zfs raidz states. I think that isn't a > matter of atacam but if I removed one disk, zpool status still showed me the > ada3 device "online". > After reinserting (and proper detection/initialisazion with cam, ada3 was > present again) and zpool clean, it set the devicea as UNAVAIL sinve I/O > errors. > I coudn't get the device into the pool again, no matter what I tried. > Only rebooting the machine helped. Then I could clean and scrub. > > What are the needed steps to provide a reinsterted hard disk to geom? With > the latest patches I don't need to issue any reset/rescan comman, right? > So it's a zfs problem, right? My mistake in understanding? > > In my testing of pulling drives at random (using a 3Ware 9550SXU or 9650SE controller), you have to "zpool offline <pool> <device>" while the drive is unplugged, before you can re-insert the same disk or a different disk. Without doing that step, it's very hard to re-insert the same disk, or replace it with a new one, without rebooting. Took me a couple of reboots and drive replacements before I figured that one out. :) -- Freddie Cash fjwcash@gmail.com
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