Bug 816293

Summary:	btrfs filesystem show UUID shows nothing
Product:	[Fedora] Fedora	Reporter:	Richard W.M. Jones <rjones>
Component:	btrfs-progs	Assignee:	Josef Bacik <josef>
Status:	CLOSED RAWHIDE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	17	CC:	jbacik, josef, mmahut
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2012-04-25 18:32:44 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Richard W.M. Jones 2012-04-25 18:01:01 UTC

Description of problem:

According to the docs, the command 'btrfs filesystem show UUID'
should show a single mountpoint, whereas 'btrfs filesystem show'
shows all mountpoints.

However the former doesn't appear to work:

# btrfs filesystem show 5e8f4c3a-f6f9-4451-a3f1-b80f26a36c03
Btrfs Btrfs v0.19

whereas the latter works ok (displaying all mountpoints):

# btrfs filesystem show  
Label: none  uuid: 5e8f4c3a-f6f9-4451-a3f1-b80f26a36c03
	Total devices 4 FS bytes used 28.00KB
	devid    1 size 1023.00MB used 437.06MB path /dev/vda1
	devid    2 size 1023.00MB used 422.25MB path /dev/vdb1
	devid    3 size 1023.00MB used 524.56MB path /dev/vdc1
	devid    4 size 1023.00MB used 524.56MB path /dev/vdd1

Btrfs Btrfs v0.19

Also the former command exits with code 0, but presumably if
it is failing to find the UUID it should exit with a non-zero
code.

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

btrfs-progs-0.19-17.fc17.x86_64

How reproducible:

100%

Steps to Reproduce:
1. See above.

Comment 1 Josef Bacik 2012-04-25 18:32:44 UTC

fixed and building a package.

http://koji.fedoraproject.org/koji/taskinfo?taskID=4022881

Comment 2 Richard W.M. Jones 2012-04-25 19:30:15 UTC

I have tested this package and it works:

# btrfs filesystem show 4502dcfb-4f47-432f-a443-a7eadd8fb263
Label: none  uuid: 4502dcfb-4f47-432f-a443-a7eadd8fb263
	Total devices 1 FS bytes used 28.00KB
	devid    1 size 1023.00MB used 12.00MB path /dev/vda1

Btrfs Btrfs v0.19


It would be nice if the result of an invalid uuid was a
non-zero exit code, eg:

# btrfs filesystem show 123456                           
Btrfs Btrfs v0.19
# echo $?
0