Date: Tue, 22 Apr 2014 23:05:59 +0100 From: Frank Leonhardt <frank2@fjl.co.uk> To: freebsd-questions@freebsd.org Subject: Re: Adding second drive to ZFS mirror - FreeBSD, atacontrol, gptid and documentation Message-ID: <5356E7C7.6000503@fjl.co.uk> In-Reply-To: <5344484C.9000504@fjl.co.uk> References: <5344484C.9000504@fjl.co.uk>
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On 08/04/2014 20:04, Frank Leonhardt wrote: > Background: I ordered two identical drives with a view to installing > FreeBSD 10 on a ZFS mirror. One drive was DOA so I sent it back and > pressed on. It was replaced with an identical drive. Now I come to > creating a mirrored ZFS root post-install. > > The new drive is there and appears in the gptid directory (I think). I > have: > > # ls -l /dev/gptid > crw-r----- 1 root operator 0x5d Mar 20 11:24 > b20a8b87-9419-11e3-9063-001fc6b111fc > crw-r----- 1 root operator 0x61 Mar 18 16:50 > b251371d-9419-11e3-9063-001fc6b111fc > > I'm a little hazy about how I tie this up. I definitely have > /dev/ad4p? and /dev/ad6 when I look. > > But this get's weird. atacontrol is missing - we're supposed to use > camcontrol now, right? Okay, it's implied as being there in the > release notes, but there's no man page for it and camcontrol produces: > > # camcontrol devlist > <WDC WD10EFRX-68JCSN0 01.01A01> at scbus0 target 0 lun 0 (ada0,pass0) > <WDC WD10EFRX-68PJCN0 01.01A01> at scbus1 target 0 lun 0 (ada1,pass1) > <Generic 2.0 Reader -0 1.00> at scbus5 target 0 lun 0 (da0,pass2) > <Generic 2.0 Reader -1 1.00> at scbus5 target 0 lun 1 (da1,pass3) > <Generic 2.0 Reader -2 1.00> at scbus5 target 0 lun 2 (da2,pass4) > > The top two are my babies, and they appear in /dev too. (I am certain > there are NO SCSI or USB drives on this box): > > crw-r----- 1 root operator 0x51 Mar 18 16:50 /dev/ada0 > crw-r----- 1 root operator 0x53 Mar 20 11:24 /dev/ada0p1 > crw-r----- 1 root operator 0x55 Mar 18 16:50 /dev/ada0p2 > crw-r----- 1 root operator 0x57 Mar 18 16:50 /dev/ada0p3 > crw-r----- 1 root operator 0x5a Mar 18 16:50 /dev/ada1 > > What's going on? I just ran with it and tried to add the second drive > as a mirror using the instructions for Solaris published by Oracle: > > # zpool attach zroot gptid/b251371d-9419-11e3-9063-001fc6b111fc > gptid/b20a8b87-9419-11e3-9063-001fc6b111fc > > And for my trouble I got: > > cannot attach gptid/b20a8b87-9419-11e3-9063-001fc6b111fc to > gptid/b251371d-9419-11e3-9063-001fc6b111fc: device is too small > > For completeness: > > # zpool status > > pool: zroot > state: ONLINE > scan: none requested > config: > > NAME STATE READ WRITE > CKSUM > zroot ONLINE 0 0 0 > gptid/b251371d-9419-11e3-9063-001fc6b111fc ONLINE 0 0 0 > > > Does anyone understand this? Am I doing something wrong? The FreeBSD > installer slices up the drive whereas Solaris doesn't (AFAIK) and this > may relevant. In case the new drive, although theoretically identical, > was actually "too small" as per the error message I checked: > > Old Drive: > > Model Family: Western Digital Red (AF) > Device Model: WDC WD10EFRX-68JCSN0 > Serial Number: WD-WCC1U4956043 > LU WWN Device Id: 5 0014ee 2b3cb08f1 > Firmware Version: 01.01A01 > User Capacity: 1,000,204,886,016 bytes [1.00 TB] > Sector Sizes: 512 bytes logical, 4096 bytes physical > Device is: In smartctl database [for details use: -P show] > ATA Version is: ATA8-ACS (minor revision not indicated) > SATA Version is: SATA 3.0, 6.0 Gb/s (current: 3.0 Gb/s) > > New Drive: > > Model Family: Western Digital Red (AF) > Device Model: WDC WD10EFRX-68PJCN0 > Serial Number: WD-WCC4J1746659 > LU WWN Device Id: 5 0014ee 25ef68b37 > Firmware Version: 01.01A01 > User Capacity: 1,000,204,886,016 bytes [1.00 TB] > Sector Sizes: 512 bytes logical, 4096 bytes physical > Rotation Rate: 5400 rpm > Device is: In smartctl database [for details use: -P show] > ATA Version is: ACS-2 (minor revision not indicated) > SATA Version is: SATA 3.0, 6.0 Gb/s (current: 3.0 Gb/s) > > As I said, identical. I've obviously guessed the runes incorrectly. Help! > Well, so much for ZFS. After a couple more weeks trying, and no one hereabouts having any clue, I gave up and reinstalled FreeBSD 10, wiping out the first drive in the process. It was a PITA to have to do it, but it worked just fine (no messages about the drives being the wrong size or anything else like that). Adding a mirror drive to a zroot initially created by the FreeBSD 10 installer remains unanswered question. Regards, Frank.
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