Date: Fri, 27 Jun 2014 18:33:55 -0400 From: FF <fusionfoto@gmail.com> To: =?UTF-8?Q?Trond_Endrest=C3=B8l?= <Trond.Endrestol@fagskolen.gjovik.no> Cc: freebsd-questions@freebsd.org Subject: Re: FreeBSD 9.2-p9/FreeBSD 9.3-PRERELEASE zpool import/export problem Message-ID: <CAD=tpef8E5tZZPEdUe_og6ZV4wc4rqZOvf%2BQQHypTzhRz3Hntg@mail.gmail.com> In-Reply-To: <alpine.BSF.2.11.1406270757110.11883@mail.fig.ol.no> References: <CAD=tpefnp-epRYySiuHPKuZdPdvhJMZvdOiaU_3QqbcUnnM8Rg@mail.gmail.com> <alpine.BSF.2.11.1406270757110.11883@mail.fig.ol.no>
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Thank you so much for a technical answer! I looked at the 9.3-RELEASE notes
for any new features in ZFS and didn't see any listed, so I had assumed no
new ones were implemented.
I'm curious why creating a zpool under releng-9.2 didn't solve the problem
after the fact? I even ran a complete drive wipe (dd if=3D/dev/zero
of=3D/dev/{ada0-ada44} bs=3D16m) and the problem persisted.
Thanks!
On Fri, Jun 27, 2014 at 2:08 AM, Trond Endrest=C3=B8l <
Trond.Endrestol@fagskolen.gjovik.no> wrote:
> On Thu, 26 Jun 2014 21:28-0400, FF wrote:
>
> > So I'm having a weird problem that just came up when I went from
> > freebsd-updated binaries to svn'ing the releng and/or stable source
> trees.
> >
> > When I compile and build a kernel (only), I can create a zpool
> >
> > something like:
> >
> > zpool create tank ada1
> >
> > I can use it, list it, create files on it, etc.
> >
> > I can zpool export it.
> >
> > It will still show as online an importable.
> >
> > But when I try to reimport it (no reboot or anything):
> >
> > root@1:/root # zpool create -f storage2 ada40
> > root@1:/root # df -kh
> > Filesystem Size Used Avail Capacity Mounted on
> > /dev/ada45s1a 7.9G 6.3G 990M 87% /
> > devfs 1.0k 1.0k 0B 100% /dev
> > storage2 913G 31k 913G 0% /storage2
> > root@1:/root # zpool export storage2
> > root@1:/root # zpool import
> > pool: storage2
> > id: 10010508457819787577
> > state: ONLINE
> > action: The pool can be imported using its name or numeric identifier.
> > config:
> >
> > storage2 ONLINE
> > ada40 ONLINE
> >
> >
> > root@1:/root # zpool import storage2
> > cannot import 'storage2': pool is formatted using a newer ZFS version
> >
> > This happens repeatably whether its multi drive or single drive.
> >
> > root@1:/root # zfs upgrade
> > This system is currently running ZFS filesystem version 5.
> >
> > All filesystems are formatted with the current version.
> >
> >
> > root@1:/root # ls -al /sbin/z*
> > -r-xr-xr-x 1 root wheel 96968 Feb 12 2013 /sbin/zfs
> > -r-xr-xr-x 1 root wheel 92472 Feb 12 2013 /sbin/zpool
> > root@1:/root # md5 /sbin/zfs
> > MD5 (/sbin/zfs) =3D 76ddf1a93f9a045466ead1ef465859d0
> > root@1:/root # md5 /sbin/zpool
> > MD5 (/sbin/zpool) =3D 29ec8f28ad5c6023ece4bb4eccb49f1e
> >
> > There's obviously no data on the system, so reformatting it with
> > 9.2-RELEASE should fix it, but I'm trying to run a custom kernel and I'=
m
> > trying to figure out what I've screwed up along the way. Also, zpool
> import
> > -f does not solve it, same error.
> >
> > Any suggestions/advice on where this may have gone sideways?
>
> It's likely that your zpool created by stable/9 has enabled (and
> activated some of) the following features:
>
> feature@multi_vdev_crash_dump
> feature@spacemap_histogram
> feature@enabled_txg
> feature@hole_birth
> feature@extensible_dataset
> feature@bookmarks
> feature@filesystem_limits
>
> They are unsupported by releng/9.2. Sadly, once a feature has been
> enabled there's no going back.
>
> Either continue using stable/9, or when creating a zpool you intend
> to use on older ZFS systems, try to avoid enabling any features
> during pool creation, i.e. zpool create -d ... Afterwards you may
> enable the features you know is supported across the board.
>
> Maybe someone else knows a better way.
>
>
> --
> +-------------------------------+------------------------------------+
> | Vennlig hilsen, | Best regards, |
> | Trond Endrest=C3=B8l, | Trond Endrest=C3=B8l, =
|
> | IT-ansvarlig, | System administrator, |
> | Fagskolen Innlandet, | Gj=C3=B8vik Technical College, Norway, =
|
> | tlf. mob. 952 62 567, | Cellular...: +47 952 62 567, |
> | sentralbord 61 14 54 00. | Switchboard: +47 61 14 54 00. |
> +-------------------------------+------------------------------------+
--=20
FF
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