Public bug reported:
I have a SAN connected via a dual-port HBA that I'm trying to get to
work with multipath.
I'm running 12.04.2 installed via netboot (clean install).
Setup options: partitioning=guided with LVM (onto internal DRAC 6/i RAID)
packages=Basic server,OpenSSH,Virtual machine host
Out of the box things work okay:
root@PE2950:~# multipath -ll
3600c0ff000d5ae56aabb855101000000 dm-3 HP,MSA2012fc
size=1.4T features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
|- 3:0:0:1 sdb 8:16 active ready running
`- 4:0:1:1 sdc 8:32 active ready running
mappings are created:
root@PE2950:~# ll /dev/mapper/
total 0
drwxr-xr-x 2 root root 140 maj 10 16:57 ./
drwxr-xr-x 16 root root 4460 maj 10 16:57 ../
brw-rw---- 1 root disk 252, 2 maj 10 16:57 360022190ba84f800113787c003d70474
lrwxrwxrwx 1 root root 7 maj 10 16:57 3600c0ff000d5ae56aabb855101000000
-> ../dm-3
crw------- 1 root root 10, 236 maj 9 23:13 control
lrwxrwxrwx 1 root root 7 maj 9 23:14 PE2950-root -> ../dm-1
lrwxrwxrwx 1 root root 7 maj 9 23:14 PE2950-swap -> ../dm-0
Then I created /etc/multipath.conf with following contents (mostly
copied from running multipathd config):
multipath.conf:
------------------
defaults {
verbosity 2
}
blacklist {
devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
devnode "^hd[a-z]"
devnode "^dcssblk[0-9]*"
devnode "^cciss!c[0-9]d[0-9]*"
device {
vendor "DGC"
product "LUNZ"
}
device {
vendor "EMC"
product "LUNZ"
}
device {
vendor "IBM"
product "S/390.*"
}
device {
vendor "IBM"
product "S/390.*"
}
device {
vendor "STK"
product "Universal Xport"
}
device {
vendor "DELL"
product "PERC.*"
}
}
blacklist_exceptions {
}
devices {
device {
vendor "HP"
product "MSA2[02]12fc|MSA2012i"
path_grouping_policy multibus
getuid_callout "/lib/udev/scsi_id --whitelisted
--device=/dev/%n"
path_selector round-robin 0
path_checker tur
checker tur
features "0"
hardware_handler "0"
prio const
failback immediate
no_path_retry 18
rr_min_io 100
}
}
multipaths {
}
(point is in trying to turn off the feature 'queue_if_no_path')
root@PE2950:~# ll /etc/multipath.conf
-rw-r--r-- 1 root root 0 maj 10 17:14 /etc/multipath.conf
Have to reboot:
root@PE2950:~$ reboot
Things get ugly - no more mappings:
root@PE2950:~# multipath -ll
root@PE2950:~#
root@PE2950:~# ls -la /dev/mapper/
total 0
drwxr-xr-x 2 root root 100 maj 10 17:23 .
drwxr-xr-x 16 root root 4420 maj 10 17:23 ..
crw------- 1 root root 10, 236 maj 10 17:22 control
lrwxrwxrwx 1 root root 7 maj 10 17:22 PE2950-root -> ../dm-1
lrwxrwxrwx 1 root root 7 maj 10 17:22 PE2950-swap -> ../dm-0
syslog:
--snip--
May 10 17:23:33 PE2950 udevd[380]: '/lib/udev/dmsetup_env 252 2'(err) 'Device
does not exist.'
May 10 17:23:33 PE2950 udevd[380]: '/lib/udev/dmsetup_env 252 2'(err) 'Command
failed'
May 10 17:23:33 PE2950 scsi_id[1156]: custom logging function 0x7f93cbe8d010
registered
May 10 17:23:33 PE2950 udevd[380]: '/lib/udev/dmsetup_env 252 2'(err) 'Device
does not exist.'
May 10 17:23:33 PE2950 udevd[380]: '/lib/udev/dmsetup_env 252 2'(err) 'Command
failed'
May 10 17:23:33 PE2950 udevd[380]: '/lib/udev/dmsetup_env 252 2'(out) 'DM_NAME='
May 10 17:23:33 PE2950 udevd[380]: '/lib/udev/dmsetup_env 252 2' [1154] exit
with return code 0
--snip--
May 10 17:23:33 PE2950 kernel: [ 90.706237] device-mapper: multipath
round-robin: version 1.0.0 loaded
May 10 17:23:33 PE2950 kernel: [ 90.706403] device-mapper: table: 252:2:
multipath: not enough path parameters
May 10 17:23:33 PE2950 kernel: [ 90.706405] device-mapper: ioctl: error
adding target to table
--snip--
May 10 17:23:33 PE2950 udevd[379]: no db file to read
/run/udev/data/+bdi:252:2: No such file or directory
May 10 17:23:33 PE2950 udevd[378]: '/sbin/blkid -o udev -p
/dev/.tmp-block-252:2'(err) 'error: /dev/.tmp-block-252:2: No such device or
address'
--snip--
May 10 17:23:33 PE2950 udevd[378]: '/lib/udev/dmsetup_env 252 2'(err) 'Device
does not exist.'
May 10 17:23:33 PE2950 udevd[378]: '/lib/udev/dmsetup_env 252 2'(err) 'Command
failed'
May 10 17:23:33 PE2950 udevd[378]: '/lib/udev/dmsetup_env 252 2'(err) 'Device
does not exist.'
May 10 17:23:33 PE2950 udevd[378]: '/lib/udev/dmsetup_env 252 2'(err) 'Command
failed'
May 10 17:23:33 PE2950 udevd[378]: '/lib/udev/dmsetup_env 252 2'(out) 'DM_NAME='
May 10 17:23:33 PE2950 udevd[378]: '/lib/udev/dmsetup_env 252 2' [1173] exit
with return code 0
--snip--
May 10 17:23:33 PE2950 udevd[1183]: starting '/sbin/dmsetup info -j 252 -m 2 -c
--nameprefixes --noheadings --rows -o suspended'
May 10 17:23:33 PE2950 udevd[378]: '/sbin/dmsetup info -j 252 -m 2 -c
--nameprefixes --noheadings --rows -o suspended'(err) 'Device does not exist.'
May 10 17:23:33 PE2950 udevd[378]: '/sbin/dmsetup info -j 252 -m 2 -c
--nameprefixes --noheadings --rows -o suspended'(err) 'Command failed'
May 10 17:23:33 PE2950 udevd[378]: '/sbin/dmsetup info -j 252 -m 2 -c
--nameprefixes --noheadings --rows -o suspended' [1183] exit with return code 1
--snip--
May 10 17:23:33 PE2950 kernel: [ 90.712666] device-mapper: table: 252:2:
multipath: not enough path parameters
May 10 17:23:33 PE2950 kernel: [ 90.712668] device-mapper: ioctl: error
adding target to table
May 10 17:23:33 PE2950 kernel: [ 90.713856] device-mapper: table: 252:2:
multipath: not enough path parameters
May 10 17:23:33 PE2950 kernel: [ 90.713858] device-mapper: ioctl: error
adding target to table
May 10 17:23:33 PE2950 udevd[379]: passed -1 bytes to socket monitor
0x7f133e032330
May 10 17:23:33 PE2950 kernel: [ 90.714250] device-mapper: table: 252:2:
multipath: not enough path parameters
May 10 17:23:33 PE2950 kernel: [ 90.714252] device-mapper: ioctl: error
adding target to table
May 10 17:23:33 PE2950 kernel: [ 90.717242] device-mapper: table: 252:2:
multipath: not enough path parameters
May 10 17:23:33 PE2950 kernel: [ 90.717245] device-mapper: ioctl: error
adding target to table
May 10 17:23:33 PE2950 kernel: [ 90.717840] device-mapper: table: 252:2:
multipath: not enough path parameters
May 10 17:23:33 PE2950 kernel: [ 90.717842] device-mapper: ioctl: error
adding target to table
May 10 17:23:33 PE2950 kernel: [ 90.747257] device-mapper: table: 252:2:
multipath: not enough path parameters
May 10 17:23:33 PE2950 kernel: [ 90.747259] device-mapper: ioctl: error
adding target to table
(the whole syslog is attached)
When things were working, I also tried creating a multipath storage pool in
virt-manager pointing to /dev/mapper, and now libvirtd is crashing. (should I
file a seperate bug report for this? or wait if this turns out to be a related
problem)
May 10 17:04:26 PE2950 kernel: [64283.865145] init: libvirt-bin main process
(24372) killed by SEGV signal
May 10 17:04:26 PE2950 kernel: [64283.865186] init: libvirt-bin main process
ended, respawning
May 10 17:04:26 PE2950 kernel: [64284.030613] init: libvirt-bin main process
(24469) killed by SEGV signal
May 10 17:04:26 PE2950 kernel: [64284.030645] init: libvirt-bin main process
ended, respawning
May 10 17:04:26 PE2950 kernel: [64284.189976] init: libvirt-bin main process
(24515) killed by SEGV signal
May 10 17:04:26 PE2950 kernel: [64284.190002] init: libvirt-bin main process
ended, respawning
May 10 17:04:26 PE2950 kernel: [64284.353151] init: libvirt-bin main process
(24559) killed by SEGV signal
May 10 17:04:26 PE2950 kernel: [64284.353182] init: libvirt-bin main process
ended, respawning
May 10 17:04:27 PE2950 kernel: [64284.520619] init: libvirt-bin main process
(24613) killed by SEGV signal
May 10 17:04:27 PE2950 kernel: [64284.520645] init: libvirt-bin main process
ended, respawning
May 10 17:04:27 PE2950 kernel: [64284.682288] init: libvirt-bin main process
(24657) killed by SEGV signal
May 10 17:04:27 PE2950 kernel: [64284.682321] init: libvirt-bin main process
ended, respawning
May 10 17:04:27 PE2950 kernel: [64284.844660] init: libvirt-bin main process
(24701) killed by SEGV signal
May 10 17:04:27 PE2950 kernel: [64284.844690] init: libvirt-bin main process
ended, respawning
May 10 17:04:27 PE2950 kernel: [64285.006189] init: libvirt-bin main process
(24745) killed by SEGV signal
May 10 17:04:27 PE2950 kernel: [64285.006214] init: libvirt-bin main process
ended, respawning
May 10 17:04:27 PE2950 kernel: [64285.195574] init: libvirt-bin main process
(24789) killed by SEGV signal
May 10 17:04:27 PE2950 kernel: [64285.195605] init: libvirt-bin main process
ended, respawning
May 10 17:04:27 PE2950 kernel: [64285.366351] init: libvirt-bin main process
(24833) killed by SEGV signal
May 10 17:04:27 PE2950 kernel: [64285.366379] init: libvirt-bin main process
ended, respawning
May 10 17:04:28 PE2950 kernel: [64285.528396] init: libvirt-bin main process
(24892) killed by SEGV signal
May 10 17:04:28 PE2950 kernel: [64285.528426] init: libvirt-bin respawning too
fast, stopped
I reproduced the bug with a virtual machine install without the SAN, so
this is definitively a problem with multipath-tools or udev.
Steps to reproduce:
1.create VM with three disks: virtio for root, two SCSI pointing to same file
for multipath
(same file is not really neccesary, as it detects as two seperate disks anyway)
2.install 12.04.2 amd64(from PXE netboot)
select guided partitioning with LVM
install packages Basic Ubuntu server,OpenSSH,Virtual machine host
3.after booting create multipath.conf, then reboot
4.bug appears
** Affects: multipath-tools (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "syslog"
https://bugs.launchpad.net/bugs/1178721/+attachment/3672261/+files/syslog.multipath-BROKEN-1
--
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Server Team, which is subscribed to multipath-tools in Ubuntu.
https://bugs.launchpad.net/bugs/1178721
Title:
multipathd fails to create mappings when multipath.conf is present
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