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Subject: Re: ZFS snapshot automount -- not creating '..' directory links
 correctly?
To: Matthew Seaman <matthew@FreeBSD.org>, freebsd-fs@FreeBSD.org
References: <c426d60a-88af-6297-d99b-be9d7ac90661@freebsd.org>
From: Andriy Gapon <avg@FreeBSD.org>
Message-ID: <e6e781c4-0a06-6736-d0be-2fb269e5b3fc@FreeBSD.org>
Date: Thu, 21 Jul 2016 13:50:57 +0300
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On 21/07/2016 12:42, Matthew Seaman wrote:
> 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
> .: 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

This is fixed in 302994.
Sorry about the breakage.

> 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.


-- 
Andriy Gapon