Date: Tue, 28 Jun 2011 21:33:53 +0300 From: Alexander Motin <mav@FreeBSD.org> To: "O. Hartmann" <ohartman@zedat.fu-berlin.de> Cc: FreeBSD-Current <freebsd-current@freebsd.org> Subject: Re: CAM/SATA: attach/detach problems with harddrive Message-ID: <4E0A1E91.3030909@FreeBSD.org> In-Reply-To: <mailpost.1309273808.9549519.98299.mailing.freebsd.current@FreeBSD.cs.nctu.edu.tw> References: <mailpost.1309273808.9549519.98299.mailing.freebsd.current@FreeBSD.cs.nctu.edu.tw>
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On 28.06.2011 18:09, O. Hartmann wrote: > Several maintenance of a ZFS pools has to be done and my intention was > to swap the 2TB hd disk (WDC WD20EARS-00MVWB0) with a 3TB hd disk > (WD30EZRX). > > zfs umount works well, > zpool export POOL also worked well, > > but I didn't find any "detach command" within camcontrol (I use the new > AHACI/CAM layout in the kernel on FreeBSD 9.0-CURRENT/amd64 r223597, so > my harddrives all show up as ada0 to ada4. > Since the box has a IcyDock 5-Slot backplane attached to the ICH0R > chipset and camcontrol doesn't reveal any detach command like atacontrol > did, I trusted in hotplugging capabilities and simply pulled the disk. > All right, the box reported a lost device but did not crash. The I > inserted the new drive. Entered > > camcontrol rescan all > > and > > camcontrol devlist showed up the new device. But I can't do anything > with the drive. Even with the former device inserted again, rescaned > etc., a zpool import command get stuck as well as any diskinfo -ctv ada4 > issued to the device. The drive shows up in camcontrol devlist, but > seems inoperable. What I'm doing wrong? With controller in AHCI mode device plug-in should be detected without any additional activity. If not, `camcontrol reset X`, `camcontrol rescan X` sequence should force it, where X is a CAM scbus number. Without additional info I can't say what went wrong there. I would recommend to enable verbose kernel messages to get more info. Also consider that SATA default timeout is 30 seconds, so if due to some issues during plug-in some command was lost, recovery may take a bit. -- Alexander Motin
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