Bug 712063

Summary: btrfs is dead slow due to fragmentation
Product: [Fedora] Fedora Reporter: Felipe Contreras <felipe.contreras>
Component: kernelAssignee: Josef Bacik <jbacik>
Status: CLOSED CURRENTRELEASE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: unspecified    
Version: 15CC: gansalmon, itamar, jonathan, kernel-maint, k.georgiou, madhu.chinakonda
Target Milestone: ---Keywords: Reopened
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2012-02-02 13:46:49 EST Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
Bug Depends On:    
Bug Blocks: 689509    

Description Felipe Contreras 2011-06-09 07:59:32 EDT
Just to track the upstream bug.

https://bugzilla.kernel.org/show_bug.cgi?id=21562
Comment 1 Felipe Contreras 2011-06-09 08:01:01 EDT
Unless anybody thinks a speed of 500kb/s is acceptable, this *must* be fixed before btrfs is the default fs.
Comment 2 Josef Bacik 2011-06-09 16:14:55 EDT
Mount -o auto-defrag with an upstream kernel.
Comment 3 Felipe Contreras 2011-06-09 16:24:53 EDT
(In reply to comment #2)
> Mount -o auto-defrag with an upstream kernel.

Mention that in the upstream bug report. Once it has been validated to fix the issue, the upstream bug can be closed _then_ this bug can be closed.

In the meantime, as far as we know, the issue remains there.

And BTW, does this means that auto-defrag would be enabled by default in Fedora?
Comment 4 Josef Bacik 2011-06-09 17:03:31 EDT
Yes the idea is that it will be turned on by default for fedora.
Comment 5 Chuck Ebbert 2011-06-24 07:08:29 EDT
(In reply to comment #4)
> Yes the idea is that it will be turned on by default for fedora.

Do you have a patch for rawhide so we can try it  there?
Comment 6 Felipe Contreras 2012-02-02 13:46:49 EST
I guess autodefrag does the trick.