Date: Thu, 05 Jan 2012 11:35:39 +0200 From: Volodymyr Kostyrko <c.kworr@gmail.com> To: Martin Birgmeier <Martin.Birgmeier@aon.at> Cc: freebsd-fs@freebsd.org Subject: Re: Upgrade to 9.0: How to convert zpool from adX to adaX? Message-ID: <4F056EEB.3050902@gmail.com> In-Reply-To: <4F05586B.9060109@aon.at> References: <4F04749E.9020301@aon.at> <20120104172351.GA42855@icarus.home.lan> <4F05586B.9060109@aon.at>
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05.01.2012 09:59, Martin Birgmeier wrote:
> In 9.0, if I keep kern.cam.ada.legacy_aliases=1, there will be two paths
> to each device, one through adX, the other through adaX. Which one will
> zfs use, and show with 'zpool status'?
You are partially incorrect here:
[torn] ~> ls -la /dev | grep ad
lrwxr-xr-x 1 root wheel 4 5 jan 08:22 ad6@ -> ada0
lrwxr-xr-x 1 root wheel 5 5 jan 08:22 ad6a@ -> ada0a
lrwxr-xr-x 1 root wheel 5 5 jan 08:22 ad6b@ -> ada0b
lrwxr-xr-x 1 root wheel 5 5 jan 08:22 ad6d@ -> ada0d
lrwxr-xr-x 1 root wheel 5 5 jan 08:22 ad6e@ -> ada0e
lrwxr-xr-x 1 root wheel 5 5 jan 08:22 ad6f@ -> ada0f
lrwxr-xr-x 1 root wheel 13 5 jan 08:22 ad6f.journal@ ->
ada0f.journal
crw-r----- 1 root operator 0, 64 5 jan 08:22 ada0
crw-r----- 1 root operator 0, 66 5 jan 08:23 ada0a
crw-r----- 1 root operator 0, 68 5 jan 08:22 ada0b
crw-r----- 1 root operator 0, 70 5 jan 08:23 ada0d
crw-r----- 1 root operator 0, 72 5 jan 08:23 ada0e
crw-r----- 1 root operator 0, 74 5 jan 08:22 ada0f
crw-r----- 1 root operator 0, 79 5 jan 08:23 ada0f.journal
> Also, I understand that I will have to wire down the various ATA CAMs to
> obtain the old numbering. How can I do this? Again, which path would zfs
> use if I did not wire down the ATA CAMs? Will I have half of my devices
> go through adX and the other through adaX, or will zfs even believe that
> it has a multipath connectivity to each device?
Not at all, ad6 would be a symlink to correct ada device, I haven't yet
changed the fstab on this machine and it reads:
# Device Mountpoint FStype Options Dump
Pass#
/dev/ad6b none swap sw 0 0
/dev/ad6a / ufs rw 1 1
/dev/ad6e /tmp ufs rw 2 2
/dev/ad6f.journal /usr ufs rw,async
2 2
/dev/ad6d /var ufs rw 2 2
/dev/cd0 /cdrom cd9660 ro,noauto 0 0
--
Sphinx of black quartz judge my vow.
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