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Bug 1031380

Summary: If it is used as a filesystem Btrfs, it's impossible to create hardlinks in subvolumes.
Product: [Community] GlusterFS Reporter: Jan Jaros <bugzilla.redhat>
Component: posixAssignee: bugs <bugs>
Status: CLOSED EOL QA Contact:
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 3.4.1CC: bugs, gluster-bugs
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Hardware: Unspecified   
OS: Unspecified   
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Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2015-10-07 13:17:37 UTC Type: Bug
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Jan Jaros 2013-11-17 13:31:50 UTC 
Description of problem:
If it is used as a filesystem Btrfs, it's impossible to create hardlinks in subvolumes.

Version-Release number of selected component (if applicable):


How reproducible:

[root@glustertest ~]# mkfs -t btrfs -L BtrfsTest /dev/vg/btrfs 

WARNING! - Btrfs Btrfs v0.20-rc1 IS EXPERIMENTAL
WARNING! - see http://btrfs.wiki.kernel.org before using

fs created label BtrfsTest on /dev/vg/btrfs
	nodesize 4096 leafsize 4096 sectorsize 4096 size 5.00GB
Btrfs Btrfs v0.20-rc1
[root@glustertest ~]# mount /dev/vg/btrfs /mnt/share/
[root@glustertest ~]# cd /mnt/share/
[root@glustertest share]# btrfs subvolume create subvolume
Create subvolume './subvolume'
[root@glustertest share]# cd subvolume/
[root@glustertest subvolume]# touch foo
[root@glustertest subvolume]# ln foo bar
[root@glustertest subvolume]# ls -lhi
total 0
257 -rw-r--r--. 2 root root 0 17. lis 14.13 bar
257 -rw-r--r--. 2 root root 0 17. lis 14.13 foo
[root@glustertest subvolume]# 
[root@glustertest subvolume]# rm -rf *
[root@glustertest subvolume]# ip -4 addr show dev eth0
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    inet 172.16.16.83/24 brd 172.16.16.255 scope global eth0
[root@glustertest subvolume]# gluster volume create testvol 172.16.16.83:/mnt/share/
volume create: testvol: success: please start the volume to access data
[root@glustertest subvolume]# gluster volume start testvol
volume start: testvol: success
[root@glustertest subvolume]# mount -t glusterfs 172.16.16.83:testvol /mnt/fuse/
[root@glustertest subvolume]# cd /mnt/fuse/
[root@glustertest fuse]# touch foo
[root@glustertest fuse]# ln foo bar
[root@glustertest fuse]# ls -lhi
total 0
10270418759055736366 -rw-r--r--. 2 root root 0 17. lis 14.16 bar
10270418759055736366 -rw-r--r--. 2 root root 0 17. lis 14.16 foo
10655654594021197356 drwxr-xr-x. 1 root root 0 17. lis 14.13 subvolume
[root@glustertest fuse]# cd subvolume/
[root@glustertest subvolume]# touch foo
[root@glustertest subvolume]# ln foo bar
ln: creating hard link `bar' => `foo': No such file or directory
Comment 1 Niels de Vos 2015-05-17 21:59:52 UTC 
GlusterFS 3.7.0 has been released (http://www.gluster.org/pipermail/gluster-users/2015-May/021901.html), and the Gluster project maintains N-2 supported releases. The last two releases before 3.7 are still maintained, at the moment these are 3.6 and 3.5.

This bug has been filed against the 3,4 release, and will not get fixed in a 3.4 version any more. Please verify if newer versions are affected with the reported problem. If that is the case, update the bug with a note, and update the version if you can. In case updating the version is not possible, leave a comment in this bug report with the version you tested, and set the "Need additional information the selected bugs from" below the comment box to "bugs".

If there is no response by the end of the month, this bug will get automatically closed.
Comment 2 Kaleb KEITHLEY 2015-10-07 13:17:37 UTC 
GlusterFS 3.4.x has reached end-of-life.

If this bug still exists in a later release please reopen this and change the version or open a new bug.