Bug 1299800

Summary: dracut multipath module can't find devices without user_friendly_names turned on
Product: Red Hat Enterprise Linux 7 Reporter: Sandi Wallendahl <pwallend>
Component: dracutAssignee: dracut-maint
Status: CLOSED ERRATA QA Contact: Release Test Team <release-test-team-automation>
Severity: high Docs Contact:
Priority: unspecified    
Version: 7.2CC: dracut-maint-list, fadamo, gangelop, harald, jruemker, mbanas, mkovarik, myllynen
Target Milestone: rcKeywords: EasyFix, Patch
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2016-11-04 08:02:38 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:
Bug Depends On:    
Bug Blocks: 1203710, 1289485, 1313485    

Description Sandi Wallendahl 2016-01-19 09:54:37 UTC
Description of problem:


Version-Release number of selected component (if applicable):
dracut-033-360.el7_2.x86_64

How reproducible:
Always

Steps to Reproduce:

1. You need multipathed devices, in my cases FibreChannel LUNs 

2. In /etc/multipath.conf set following:
defaults {
    user_friendly_names  no
}

Alternatively you can set aliases for your wwids.

3. Reboot

4. Now multipathed devices appear as symlinks like /dev/mapper/360a0123456789abcdef0123456789abcde -> --/dev/dm-X

5. Run: `dracut /tmp/test.img` which gives one to many error msgs:
ls: cannot access /dev/mapper/mpath*: No such file or directory

Actual results:
Dracut skips all those devices that do not have mpath-prefixes.

Expected results:
Dracut should iterate over all devices in /dev/mapper and determine if they are multipath devices by using other means (such as checking their uuid under /sys)

Additional info:
This bug has been fixed in upstream with following commit: https://github.com/haraldh/dracut/commit/918fbfcf6b99016f1d426e7c131b9fdeaaaede89

Comment 3 Mike McCune 2016-03-28 22:31:02 UTC
This bug was accidentally moved from POST to MODIFIED via an error in automation, please see mmccune with any questions

Comment 5 Michal Kovarik 2016-08-03 11:12:48 UTC
Reproduced on RHEL-7.2 with dracut-033-359.el7. Verified with dracut-033-450.el7. Patch is included, no error messages when running dracut.

Comment 6 Harald Hoyer 2016-08-10 12:24:10 UTC
*** Bug 1360326 has been marked as a duplicate of this bug. ***

Comment 8 errata-xmlrpc 2016-11-04 08:02:38 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-2530.html