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Bug 1360326 - dracut reports ls: cannot access /dev/mapper/mpath*: No such file or directory
Summary: dracut reports ls: cannot access /dev/mapper/mpath*: No such file or directory
Keywords:
Status: CLOSED DUPLICATE of bug 1299800
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: dracut
Version: 7.2
Hardware: x86_64
OS: Linux
unspecified
medium
Target Milestone: rc
: ---
Assignee: Harald Hoyer
QA Contact: Release Test Team
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-07-26 12:32 UTC by yuk
Modified: 2016-08-10 12:24 UTC (History)
8 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-08-10 12:24:10 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Description yuk 2016-07-26 12:32:29 UTC 
Description of problem:

After configuring multipath.conf with

user_friendly_names     yes

# dracut -f

reports:

[root@sgsvrdbora021lx:~]# dracut -f
ls: cannot access /dev/mapper/mpath*: No such file or directory
ls: cannot access /dev/mapper/mpath*: No such file or directory
ls: cannot access /dev/mapper/mpath*: No such file or directory
ls: cannot access /dev/mapper/mpath*: No such file or directory
ls: cannot access /dev/mapper/mpath*: No such file or directory
ls: cannot access /dev/mapper/mpath*: No such file or directory
ls: cannot access /dev/mapper/mpath*: No such file or directory
ls: cannot access /dev/mapper/mpath*: No such file or directory
ls: cannot access /dev/mapper/mpath*: No such file or directory
ls: cannot access /dev/mapper/mpath*: No such file or directory
ls: cannot access /dev/mapper/mpath*: No such file or directory
ls: cannot access /dev/mapper/mpath*: No such file or directory
ls: cannot access /dev/mapper/mpath*: No such file or directory
ls: cannot access /dev/mapper/mpath*: No such file or directory


[root@sgsvrdbora021lx:/tmp]# ls -l /dev/mapper/
total 0
crw------- 1 root root 10, 236 Jul 26 08:56 control
lrwxrwxrwx 1 root root       7 Jul 26 10:30 DONT-USE--X-DR -> ../dm-2
lrwxrwxrwx 1 root root       8 Jul 26 10:30 DR-IOSAVOT03 -> ../dm-12
lrwxrwxrwx 1 root root       7 Jul 26 10:30 IOCAVOT03 -> ../dm-0
lrwxrwxrwx 1 root root       7 Jul 26 10:30 IOPABOOT1 -> ../dm-6
lrwxrwxrwx 1 root root       7 Jul 26 10:30 IOPABOOT1p1 -> ../dm-7
lrwxrwxrwx 1 root root       7 Jul 26 10:30 IOPABOOT1p2 -> ../dm-8
lrwxrwxrwx 1 root root       7 Jul 26 10:30 IOPABOOT1p3 -> ../dm-9
lrwxrwxrwx 1 root root       7 Jul 26 10:30 IOPADAT02 -> ../dm-5
lrwxrwxrwx 1 root root       7 Jul 26 10:30 IOPAFRA02 -> ../dm-4
lrwxrwxrwx 1 root root       8 Jul 26 10:30 IOPALOG01 -> ../dm-10
lrwxrwxrwx 1 root root       7 Jul 26 10:30 IOPAVOT01 -> ../dm-1
lrwxrwxrwx 1 root root       7 Jul 26 10:30 IOPAVOT04 -> ../dm-3
lrwxrwxrwx 1 root root       8 Jul 26 10:30 IOSADAT02 -> ../dm-15
lrwxrwxrwx 1 root root       8 Jul 26 10:30 IOSAFRA02 -> ../dm-11
lrwxrwxrwx 1 root root       8 Jul 26 10:30 IOSALOG01 -> ../dm-16
lrwxrwxrwx 1 root root       8 Jul 26 10:30 IOSAVOT02 -> ../dm-13
lrwxrwxrwx 1 root root       8 Jul 26 10:30 IOSAVOT05 -> ../dm-14
lrwxrwxrwx 1 root root       8 Jul 26 10:30 vg00-lv_backup -> ../dm-23
lrwxrwxrwx 1 root root       8 Jul 26 10:30 vg00-lv_gridbase -> ../dm-26
lrwxrwxrwx 1 root root       8 Jul 26 10:30 vg00-lv_gridhome -> ../dm-27
lrwxrwxrwx 1 root root       8 Jul 26 10:30 vg00-lv_home -> ../dm-19
lrwxrwxrwx 1 root root       8 Jul 26 10:30 vg00-lv_install -> ../dm-24
lrwxrwxrwx 1 root root       8 Jul 26 10:30 vg00-lv_opt -> ../dm-22
lrwxrwxrwx 1 root root       8 Jul 26 10:30 vg00-lv_oracle -> ../dm-25
lrwxrwxrwx 1 root root       8 Jul 26 10:30 vg00-lv_slash -> ../dm-17
lrwxrwxrwx 1 root root       8 Jul 26 10:30 vg00-lv_swap -> ../dm-18
lrwxrwxrwx 1 root root       8 Jul 26 10:30 vg00-lv_tmp -> ../dm-21
lrwxrwxrwx 1 root root       8 Jul 26 10:30 vg00-lv_var -> ../dm-20

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

device-mapper-multipath-0.4.9-85.el7_2.5.x86_64

How reproducible:

Always

Steps to Reproduce:
1. Configure multipath.conf enabling user_friendly_names
2. Run "dracut -f"
3.

Actual results:

ls: cannot access /dev/mapper/mpath*: No such file or directory
ls: cannot access /dev/mapper/mpath*: No such file or directory
ls: cannot access /dev/mapper/mpath*: No such file or directory
ls: cannot access /dev/mapper/mpath*: No such file or directory
ls: cannot access /dev/mapper/mpath*: No such file or directory
ls: cannot access /dev/mapper/mpath*: No such file or directory
ls: cannot access /dev/mapper/mpath*: No such file or directory
ls: cannot access /dev/mapper/mpath*: No such file or directory
ls: cannot access /dev/mapper/mpath*: No such file or directory
ls: cannot access /dev/mapper/mpath*: No such file or directory
ls: cannot access /dev/mapper/mpath*: No such file or directory
ls: cannot access /dev/mapper/mpath*: No such file or directory
ls: cannot access /dev/mapper/mpath*: No such file or directory
ls: cannot access /dev/mapper/mpath*: No such file or directory

Expected results:

<none>

Additional info:

[root@sgsvrdbora021lx:/tmp]# multipath -ll
IOSAFRA02 (36005076303ffd12e0000000000008700) dm-11 IBM     ,2107900         
size=500G features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
  |- 1:0:8:1 sds  65:32  active ready running
  |- 2:0:8:1 sdau 66:224 active ready running
  |- 1:0:9:1 sdy  65:128 active ready running
  `- 2:0:9:1 sdba 67:64  active ready running
IOSALOG01 (36005076303ffd12e0000000000008702) dm-16 IBM     ,2107900         
size=200G features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
  |- 1:0:8:5 sdw  65:96  active ready running
  |- 2:0:8:5 sday 67:32  active ready running
  |- 1:0:9:5 sdac 65:192 active ready running
  `- 2:0:9:5 sdbe 67:128 active ready running
IOSAVOT05 (36005076303ffd12e0000000000008602) dm-14 IBM     ,2107900         
size=10G features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
  |- 1:0:8:4 sdv  65:80  active ready running
  |- 2:0:8:4 sdax 67:16  active ready running
  |- 1:0:9:4 sdab 65:176 active ready running
  `- 2:0:9:4 sdbd 67:112 active ready running
IOPAFRA02 (36005076303ffd08e0000000000008700) dm-4 IBM     ,2107900         
size=500G features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
  |- 1:0:4:1 sde  8:64   active ready running
  |- 2:0:4:1 sdag 66:0   active ready running
  |- 1:0:5:1 sdl  8:176  active ready running
  `- 2:0:5:1 sdan 66:112 active ready running
IOPALOG01 (36005076303ffd08e0000000000008702) dm-10 IBM     ,2107900         
size=200G features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
  |- 1:0:4:6 sdj  8:144  active ready running
  |- 2:0:4:6 sdal 66:80  active ready running
  |- 1:0:5:6 sdq  65:0   active ready running
  `- 2:0:5:6 sdas 66:192 active ready running
DONT-USE--X-DR (36005076303ffd08e0000000000008701) dm-2 IBM     ,2107900         
size=10G features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
  |- 1:0:4:3 sdg  8:96   active ready running
  |- 2:0:4:3 sdai 66:32  active ready running
  |- 1:0:5:3 sdn  8:208  active ready running
  `- 2:0:5:3 sdap 66:144 active ready running
DR-IOSAVOT03 (36005076303ffd12e0000000000008701) dm-12 IBM     ,2107900         
size=10G features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
  |- 1:0:8:3 sdu  65:64  active ready running
  |- 2:0:8:3 sdaw 67:0   active ready running
  |- 1:0:9:3 sdaa 65:160 active ready running
  `- 2:0:9:3 sdbc 67:96  active ready running
IOPAVOT04 (36005076303ffd08e0000000000008602) dm-3 IBM     ,2107900         
size=10G features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
  |- 1:0:4:4 sdh  8:112  active ready running
  |- 2:0:4:4 sdaj 66:48  active ready running
  |- 1:0:5:4 sdo  8:224  active ready running
  `- 2:0:5:4 sdaq 66:160 active ready running
IOSAVOT02 (36005076303ffd12e0000000000008601) dm-13 IBM     ,2107900
size=10G features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
  |- 1:0:8:2 sdt  65:48  active ready running
  |- 2:0:8:2 sdav 66:240 active ready running
  |- 1:0:9:2 sdz  65:144 active ready running
  `- 2:0:9:2 sdbb 67:80  active ready running
IOCAVOT03 (3600507630bffc1760000000000008699) dm-0 IBM     ,2107900
size=10G features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
  |- 1:0:0:0 sdb  8:16   active ready running
  |- 2:0:2:0 sdad 65:208 active ready running
  |- 1:0:1:0 sdc  8:32   active ready running
  `- 2:0:3:0 sdae 65:224 active ready running
IOSADAT02 (36005076303ffd12e0000000000008600) dm-15 IBM     ,2107900
size=1000G features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
  |- 1:0:8:0 sdr  65:16  active ready running
  |- 2:0:8:0 sdat 66:208 active ready running
  |- 1:0:9:0 sdx  65:112 active ready running
  `- 2:0:9:0 sdaz 67:48  active ready running
IOPAVOT01 (36005076303ffd08e0000000000008601) dm-1 IBM     ,2107900
size=10G features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
  |- 1:0:4:2 sdf  8:80   active ready running
  |- 2:0:4:2 sdah 66:16  active ready running
  |- 1:0:5:2 sdm  8:192  active ready running
  `- 2:0:5:2 sdao 66:128 active ready running
IOPADAT02 (36005076303ffd08e0000000000008600) dm-5 IBM     ,2107900
size=1000G features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
  |- 1:0:4:0 sdd  8:48   active ready running
  |- 2:0:4:0 sdaf 65:240 active ready running
  |- 1:0:5:0 sdk  8:160  active ready running
  `- 2:0:5:0 sdam 66:96  active ready running
IOPABOOT1 (36005076303ffd08e0000000000009926) dm-6 IBM     ,2107900
size=300G features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
  |- 1:0:4:5 sdi  8:128  active ready running
  |- 2:0:4:5 sdak 66:64  active ready running
  |- 1:0:5:5 sdp  8:240  active ready running
  `- 2:0:5:5 sdar 66:176 active ready running


[root@sgsvrdbora021lx:/tmp]# df
Filesystem                   Type      Size  Used Avail Use% Mounted on
/dev/mapper/vg00-lv_slash    xfs       3.0G  1.8G  1.3G  57% /
devtmpfs                     devtmpfs  504G   36K  504G   1% /dev
shmfs                        tmpfs     800G     0  800G   0% /dev/shm
tmpfs                        tmpfs     504G   19M  504G   1% /run
tmpfs                        tmpfs     504G     0  504G   0% /sys/fs/cgroup
/dev/mapper/vg00-lv_tmp      xfs       2.0G   43M  2.0G   3% /tmp
/dev/mapper/vg00-lv_var      xfs       2.0G  993M  1.1G  49% /var
/dev/mapper/vg00-lv_home     xfs      1014M  132M  883M  13% /home
/dev/mapper/vg00-lv_install  xfs        30G   14G   17G  46% /install
/dev/mapper/vg00-lv_backup   xfs      1014M   40M  975M   4% /var/backup
/dev/mapper/vg00-lv_opt      xfs      1014M  548M  467M  54% /opt
/dev/mapper/vg00-lv_oracle   xfs        20G   13G  7.1G  65% /u01/app/oracle
/dev/mapper/vg00-lv_gridhome xfs        20G   13G  7.3G  64% /u01/app/12.1.0.2/grid
/dev/mapper/vg00-lv_gridbase xfs        10G  3.9G  6.2G  39% /u01/app/grid
/dev/mapper/IOPABOOT1p2      xfs       197M  127M   70M  65% /boot
/dev/mapper/IOPABOOT1p1      vfat      200M  9.6M  191M   5% /boot/efi
Comment 2 Bryn M. Reeves 2016-07-26 13:36:51 UTC 
This looks like a problem in the Dracut multipath module's handling of systems with user_friendly_names enabled, but with no actual user friendly names configured:

  user_friendly_names     yes

vs:

lrwxrwxrwx 1 root root       7 Jul 26 10:30 DONT-USE--X-DR -> ../dm-2
lrwxrwxrwx 1 root root       8 Jul 26 10:30 DR-IOSAVOT03 -> ../dm-12
lrwxrwxrwx 1 root root       7 Jul 26 10:30 IOCAVOT03 -> ../dm-0
lrwxrwxrwx 1 root root       7 Jul 26 10:30 IOPABOOT1 -> ../dm-6
lrwxrwxrwx 1 root root       7 Jul 26 10:30 IOPABOOT1p1 -> ../dm-7
lrwxrwxrwx 1 root root       7 Jul 26 10:30 IOPABOOT1p2 -> ../dm-8
lrwxrwxrwx 1 root root       7 Jul 26 10:30 IOPABOOT1p3 -> ../dm-9
lrwxrwxrwx 1 root root       7 Jul 26 10:30 IOPADAT02 -> ../dm-5
lrwxrwxrwx 1 root root       7 Jul 26 10:30 IOPAFRA02 -> ../dm-4
lrwxrwxrwx 1 root root       8 Jul 26 10:30 IOPALOG01 -> ../dm-10
lrwxrwxrwx 1 root root       7 Jul 26 10:30 IOPAVOT01 -> ../dm-1
lrwxrwxrwx 1 root root       7 Jul 26 10:30 IOPAVOT04 -> ../dm-3
lrwxrwxrwx 1 root root       8 Jul 26 10:30 IOSADAT02 -> ../dm-15
lrwxrwxrwx 1 root root       8 Jul 26 10:30 IOSAFRA02 -> ../dm-11
lrwxrwxrwx 1 root root       8 Jul 26 10:30 IOSALOG01 -> ../dm-16
lrwxrwxrwx 1 root root       8 Jul 26 10:30 IOSAVOT02 -> ../dm-13
lrwxrwxrwx 1 root root       8 Jul 26 10:30 IOSAVOT05 -> ../dm-14

Presumably these other devices are configured as explicit aliases in the multipaths {} section of multipath.conf?

The error seems to come from the function majmin_to_mpath_dev() in the 90multipath/module-setup.sh script file:

     12 majmin_to_mpath_dev() {
     13     local _dev
     14     for i in `ls -1 /dev/mapper/mpath*`; do
     15         dev=$(get_maj_min $i)
     16         if [ "$dev" = "$1" ]; then
     17             echo $i
     18             return
     19         fi
     20     done
     21 }
     22 

This won't work for anything other than the default user_friendly_names alias pattern; better would be to do something like:

# dmsetup info --noheadings --separator ' ' -c -S uuid=~^mpath -oname,major,minor
mpathb 253 1
mpatha 253 0
Comment 3 yuk 2016-07-27 08:02:11 UTC 
Yes, we use things like:

        multipath {
                wwid                    36005076303ffd08e0000000000008601
                alias                   IOPAVOT01
        }

in our multipath.conf

[root@sgsvrdbora021lx:/tmp]# dmsetup info --noheadings --separator ' ' -c -S uuid=~^mpath -oname,major,minor
IOSAFRA02 253 11
IOSALOG01 253 16
IOSAVOT05 253 14
IOPAFRA02 253 4
IOPALOG01 253 10
DONT-USE--X-DR 253 2
DR-IOSAVOT03 253 12
IOPAVOT04 253 3
IOSAVOT02 253 13
IOCAVOT03 253 0
IOSADAT02 253 15
IOPAVOT01 253 1
IOPADAT02 253 5
IOPABOOT1 253 6

dmsetup info seems better.
Comment 4 Harald Hoyer 2016-08-10 12:02:31 UTC 
This is actually fixed in the RHEL-7.3 erratum.
Comment 5 Harald Hoyer 2016-08-10 12:24:10 UTC 

*** This bug has been marked as a duplicate of bug 1299800 ***
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