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Bug 1299800 - dracut multipath module can't find devices without user_friendly_names turned on
Summary: dracut multipath module can't find devices without user_friendly_names turned on
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: dracut
Version: 7.2
Hardware: x86_64
OS: Linux
Target Milestone: rc
: ---
Assignee: dracut-maint
QA Contact: Release Test Team
: 1360326 (view as bug list)
Depends On:
TreeView+ depends on / blocked
Reported: 2016-01-19 09:54 UTC by Pekka Wallendahl
Modified: 2018-09-27 13:34 UTC (History)
8 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2016-11-04 08:02:38 UTC
Target Upstream Version:

Attachments (Terms of Use)

System ID Priority Status Summary Last Updated
Red Hat Knowledge Base (Solution) 3628111 None None None 2018-09-27 13:34:21 UTC
Red Hat Product Errata RHBA-2016:2530 normal SHIPPED_LIVE dracut bug fix and enhancement update 2016-11-03 14:17:01 UTC

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

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

How reproducible:

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:

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 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.

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