Bug 816293 – btrfs filesystem show UUID shows nothing

Bug 816293 - btrfs filesystem show UUID shows nothing

Summary:	btrfs filesystem show UUID shows nothing

Status:	CLOSED RAWHIDE

Aliases:	None

Product:	Fedora
Classification:	Fedora
Component:	btrfs-progs (Show other bugs)
Sub Component:
Version:	17
Hardware:	Unspecified Unspecified

Priority	unspecified Severity unspecified
Target Milestone:	---
Target Release:	---
Assigned To:	Josef Bacik
QA Contact:	Fedora Extras Quality Assurance
Docs Contact:

URL:
Whiteboard:
Keywords:

Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2012-04-25 14:01 EDT by Richard W.M. Jones
Modified:	2012-04-25 15:30 EDT (History)
CC List:	3 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2012-04-25 14:32:44 EDT
Type:	Bug
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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Description Richard W.M. Jones 2012-04-25 14:01:01 EDT

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 14:32:44 EDT

fixed and building a package.

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

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

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

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