From owner-freebsd-fs@FreeBSD.ORG Sun Feb 12 08:12:16 2012 Return-Path: Delivered-To: freebsd-fs@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 5D536106564A for ; Sun, 12 Feb 2012 08:12:16 +0000 (UTC) (envelope-from matthew@FreeBSD.org) Received: from smtp.infracaninophile.co.uk (smtp6.infracaninophile.co.uk [IPv6:2001:8b0:151:1:3cd3:cd67:fafa:3d78]) by mx1.freebsd.org (Postfix) with ESMTP id C0BC58FC08 for ; Sun, 12 Feb 2012 08:12:15 +0000 (UTC) Received: from seedling.black-earth.co.uk (seedling.black-earth.co.uk [IPv6:2001:8b0:151:1:fa1e:dfff:feda:c0bb]) (authenticated bits=0) by smtp.infracaninophile.co.uk (8.14.5/8.14.5) with ESMTP id q1C8C7eR088242 (version=TLSv1/SSLv3 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO) for ; Sun, 12 Feb 2012 08:12:08 GMT (envelope-from matthew@FreeBSD.org) X-DKIM: OpenDKIM Filter v2.4.3 smtp.infracaninophile.co.uk q1C8C7eR088242 Authentication-Results: smtp.infracaninophile.co.uk/q1C8C7eR088242; dkim=none (no signature); dkim-adsp=none Message-ID: <4F377457.4080807@FreeBSD.org> Date: Sun, 12 Feb 2012 08:12:07 +0000 From: Matthew Seaman User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:10.0) Gecko/20120129 Thunderbird/10.0 MIME-Version: 1.0 To: freebsd-fs@FreeBSD.org X-Enigmail-Version: 1.3.5 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig96A94CE0E99749F3FE0846F4" X-Virus-Scanned: clamav-milter 0.97.3 at lucid-nonsense.infracaninophile.co.uk X-Virus-Status: Clean X-Spam-Status: No, score=-2.8 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.3.2 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on lucid-nonsense.infracaninophile.co.uk Cc: Subject: ZFS Snapshot problems X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 12 Feb 2012 08:12:16 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig96A94CE0E99749F3FE0846F4 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Since about a week ago I've been intermittently getting a problem where I cannot access a snapshot after creating it: lucid-nonsense:~:# zfs snapshot zroot@test lucid-nonsense:~:# zfs list -t snapshot NAME USED AVAIL REFER MOUNTPOINT zroot@test 67K - 8.36G - lucid-nonsense:~:# cd /.zfs/snapshot/test /.zfs/snapshot/test: Not a directory. This is playing silly buggers with my backups. Apart from that, the system is behaving normally. Nothing in syslog, nothing in dmesg. The only way I've found so far to clear the problem is to reboot, but then the problem seems to recur within a few days. 'zpool status' says everything is fine. 'zpool scrub' has no effect. lucid-nonsense:~:# uname -a FreeBSD lucid-nonsense.infracaninophile.co.uk 8.2-STABLE FreeBSD 8.2-STABLE #2 r231394: Fri Feb 10 20:35:13 GMT 2012 root@lucid-nonsense.infracaninophile.co.uk:/usr/obj/usr/src/sys/LUCID-NON= SENSE amd64 lucid-nonsense:~:# zpool upgrade This system is currently running ZFS pool version 28. All pools are formatted using this version. lucid-nonsense:~:# zfs upgrade This system is currently running ZFS filesystem version 5. All filesystems are formatted with the current version. Any clues about how I can debug this, and hopefully prevent it happening?= Cheers, Matthew --=20 Dr Matthew J Seaman MA, D.Phil. PGP: http://www.infracaninophile.co.uk/pgpkey --------------enig96A94CE0E99749F3FE0846F4 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.16 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk83dFcACgkQ8Mjk52CukIw1IgCfUkqvyKjPv4KV1W+uhUQ63DKr xuoAniR/zrhn6qIUzzQ/gRTrD9SEE2/f =nooy -----END PGP SIGNATURE----- --------------enig96A94CE0E99749F3FE0846F4--