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Bug#633062: marked as done (btrfs: low limit on number of hard links to one inode in one directory)

Your message dated Sat, 04 Jun 2016 22:36:06 +0100
with message-id <1465076166.2847.167.camel@decadent.org.uk>
and subject line Re: btrfs-tools: btrfs fs: Hardlinks-per-directory limit hit
has caused the Debian Bug report #633062,
regarding btrfs: low limit on number of hard links to one inode in one directory
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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-- 
633062: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=633062
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: btrfs-tools
Version: 0.19+20100601-3
Severity: normal
Tags: upstream


I hit the Hardlinks-per-directory limit of a btrfs file system, when copying a large 
existing backuppc archive from an ext3 file system to a newly created btrfs file system. 
One of several similar error is: 
tar: ./pc/XXXX/168/f%2fusr%2flocal/fsrc/fopenttd/f.svn/fprop-base/fdisaster_cmd.c.svn-base: 
Cannot hard link to `./cpool/1/a/b/1ab6fd829106709f984790594fe94756': Too many links

This behaviour of btrfs is known and had been discussed under [1] (in detail), the latest status I've 
found is here [2] (short summary).

The developers of btrfs wanted to have a real world example in [1] of hitting the limitation, so 
unfortunately it exists, that's what this report is about. Please let btrfs overcome this limitation.

This bug actually belongs to the btrfs kernel module, but I see it better off here. Otherwise, please
teach me if I'm wrong.

Regards, Adrian.

[1] http://thread.gmane.org/gmane.comp.file-systems.btrfs/3427
[2] http://www.spinics.net/lists/linux-btrfs/msg05640.html

-- System Information:
Debian Release: 6.0.2
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 2.6.32-5-686 (SMP w/2 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages btrfs-tools depends on:
ii  e2fslibs                1.41.12-4stable1 ext2/ext3/ext4 file system librari
ii  libc6                   2.11.2-10        Embedded GNU C Library: Shared lib
ii  libcomerr2              1.41.12-4stable1 common error description library
ii  libuuid1                2.17.2-9         Universally Unique ID library
ii  zlib1g                  1:1.2.3.4.dfsg-3 compression library - runtime

btrfs-tools recommends no packages.

btrfs-tools suggests no packages.

-- no debconf information

--- End Message ---
--- Begin Message --- 
Version: 3.7.1-1~experimental.1

This was fixed with the 'extended inode refs' feature in Linux 3.7.

Ben.

--
Ben Hutchings
The most exhausting thing in life is being insincere. - Anne Morrow
Lindberg

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