Date: Thu, 21 Jul 2016 10:42:20 +0100 From: Matthew Seaman <matthew@FreeBSD.org> To: freebsd-fs@freebsd.org Subject: ZFS snapshot automount -- not creating '..' directory links correctly? Message-ID: <c426d60a-88af-6297-d99b-be9d7ac90661@freebsd.org>
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From: Matthew Seaman <matthew@freebsd.org>
To: freebsd-fs@freebsd.org
Message-ID: <c426d60a-88af-6297-d99b-be9d7ac90661@freebsd.org>
Subject: ZFS snapshot automount -- not creating '..' directory links
correctly?
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Hi,
Ever since I upgraded to 11.0-BETA1, my tarsnap backups have been
misbehaving. While corresponding with Colin, and trying to diagnose the
problem I discovered that there seems to be a problem with the '..' link
in an automounted snapshot.
It's easy to reproduce:
# zfs create zroot/empty
# zfs snapshot zroot/empty@20160721-1011
# cd /empty/.zfs/snapshot/20160721-1011
# stat -f "%N: %HT%SY" \
/empty /empty/.zfs /empty/.zfs/snapshot \
/empty/.zfs/snapshot/20160721-1011 . ..
/empty: Directory
/empty/.zfs: Directory
/empty/.zfs/snapshot: Directory
/empty/.zfs/snapshot/20160721-1011: Directory
=2E: Directory
stat: ..: stat: Not a directory
This is on:
# uname -a
FreeBSD lucid-nonsense.infracaninophile.co.uk 11.0-BETA1 FreeBSD
11.0-BETA1 #2 r302482: Sat Jul 9 15:37:08 BST 2016
root@lucid-nonsense.infracaninophile.co.uk:/usr/obj/usr/src/sys/GENERIC
amd64
Attempting the same test on a 10.3-STABLE machine returned '..' as a
directory perfectly happily.
Cheers,
Matthew
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