[Bug 797226] Re: /dev/dm-10 is not created for LVM volume
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Fri Oct 27 16:32:00 UTC 2017
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On 2011-03-23T20:40:12+00:00 G. wrote:
I think I've found why none of my lvm mounts are working on boot up.
First the vgchange in fedora-storage-init never seems to get hit. And
udev seems to have a problem setting up the drivers as well.
[root at liandra systemd]# /sbin/lvm vgchange -a y --sysinit
10 logical volume(s) in volume group "LiandraStore" now active
semid 32768: semop failed for cookie 0xd4d83af: incorrect semaphore state
Failed to set a proper state for notification semaphore identified by cookie value 223183791 (0xd4d83af) to initialize waiting for incoming notifications.
/dev/mapper/LiandraStore-VirtualMachines not set up by udev: Falling back to direct node creation.
/dev/mapper/LiandraStore-Old--Liandra not set up by udev: Falling back to direct node creation.
/dev/mapper/LiandraStore-Backups not set up by udev: Falling back to direct node creation.
/dev/mapper/LiandraStore-LiveCD not set up by udev: Falling back to direct node creation.
/dev/mapper/LiandraStore-iTunes_Media not set up by udev: Falling back to direct node creation.
/dev/mapper/LiandraStore-DVD--Working not set up by udev: Falling back to direct node creation.
The link /dev/LiandraStore/VirtualMachines should had been created by udev but it was not found. Falling back to direct link creation.
The link /dev/LiandraStore/Old-Liandra should had been created by udev but it was not found. Falling back to direct link creation.
The link /dev/LiandraStore/Backups should had been created by udev but it was not found. Falling back to direct link creation.
The link /dev/LiandraStore/LiveCD should had been created by udev but it was not found. Falling back to direct link creation.
The link /dev/LiandraStore/iTunes_Media should had been created by udev but it was not found. Falling back to direct link creation.
The link /dev/LiandraStore/DVD-Working should had been created by udev but it was not found. Falling back to direct link creation.
Any ideas how I debug this further?
Reply at:
https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/797226/comments/0
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On 2011-03-23T20:41:52+00:00 G. wrote:
This may be related to by dbus not starting as well in bug: 689861.
Not sure.
Reply at:
https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/797226/comments/1
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On 2011-03-24T08:57:04+00:00 Harald wrote:
are you sure udevd is running?
Reply at:
https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/797226/comments/2
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On 2011-03-24T13:13:11+00:00 G. wrote:
I'm assuming it is:
[root at liandra ~]# ps -ef | grep udev
root 488 1 0 Mar23 ? 00:00:00 /sbin/udevd
root 18778 18319 0 09:12 pts/1 00:00:00 grep --color=auto udev
[root at liandra ~]# lvcreate -L 10G -n Test LiandraStore
/dev/mapper/LiandraStore-Test not set up by udev: Falling back to direct node creation.
The link /dev/LiandraStore/Test should had been created by udev but it was not found. Falling back to direct link creation.
Logical volume "Test" created
[root at liandra ~]# lvremove LiandraStore/Test
Do you really want to remove active logical volume Test? [y/n]: y
Logical volume "Test" successfully removed
semid 98304: semop failed for cookie 0xd4d613a: incorrect semaphore state
Failed to set a proper state for notification semaphore identified by cookie value 223174970 (0xd4d613a) to initialize waiting for incoming notifications.
Any further tests I ran run to verify it is running correctly?
Reply at:
https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/797226/comments/3
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On 2011-03-24T13:44:12+00:00 Harald wrote:
any ideas from the lvm team, what's going wrong here?
Reply at:
https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/797226/comments/4
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On 2011-03-24T14:21:54+00:00 Milan wrote:
This usually means, that you are using udev-enabled lvm (default in
Fedora) but there are missing lvm udev rules (explicitly rule with
"dmsetup udevcomplete" call, 95-dm-notify.rules).
lvm will fallback to manual node removal (I think that the warning is
about semaphore state is some minor bug in lvm code but it is just
consequence - if udev rules missing, your system is simply
misconfigured.)
Verify, that device-mapper is properly installed.
To diagnose it, please run the lvm command with -vvvv and add output
here.
Reply at:
https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/797226/comments/5
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On 2011-03-29T13:23:30+00:00 G. wrote:
Created attachment 488442
Verbose lvcreate command
Reply at:
https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/797226/comments/6
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On 2011-03-29T13:24:05+00:00 G. wrote:
Also verified the /lib/udev/rules.d/95-dm-notify.rules is the same in
F15 as it is in other releases.
Reply at:
https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/797226/comments/7
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On 2011-03-29T13:55:17+00:00 Peter wrote:
What's the kernel version used? Is this a stock Fedora kernel?
Reply at:
https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/797226/comments/8
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On 2011-03-29T13:58:25+00:00 G. wrote:
Yes it's stock. 2.6.38-1.fc15.x86_64
Reply at:
https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/797226/comments/9
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On 2011-03-31T14:30:19+00:00 Peter wrote:
Well, based on the log, uevent was not generated correctly:
" Uevent not generated! Calling udev_complete internally to avoid
process lock-up."
This decrements the value of the semaphore used for synchronization.
However, if the event (for some reason) *is* generated despite the fact
that the kernel function responsible for sending the uevent reports a
failure and then we decrement the value once again from within the udev
rules based on the generated event (/lib/udev/rules.d/95-dm-
notify.rules), we can end up with that:
"semid 32768: semop failed for cookie 0xd4d83af: incorrect semaphore
state..."
The other messages about "... not set up by udev. Falling back to direct
node creation" is just a consequence of failed synchronisation with udev
(since we decremented semaphore value prematurely).
However I'm not quite sure now why this happens. It could be a bug in
kernel code as well... (but I can't reproduce that)
Reply at:
https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/797226/comments/10
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On 2011-03-31T15:31:04+00:00 Harald wrote:
you might also try the new udev version in F15
Reply at:
https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/797226/comments/11
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On 2011-04-11T15:05:54+00:00 G. wrote:
New version in F15 seems to have solved the problems.
Reply at:
https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/797226/comments/12
** Changed in: lvm2 (Fedora)
Status: Unknown => Fix Released
** Changed in: lvm2 (Fedora)
Importance: Unknown => High
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https://bugs.launchpad.net/bugs/797226
Title:
/dev/dm-10 is not created for LVM volume
Status in lvm2 package in Ubuntu:
Confirmed
Status in lvm2 package in Fedora:
Fix Released
Bug description:
Binary package hint: udev
After I created 10th logical volume (shared - see below), udev did not create /dev/dm-10 device node:
root at mf:~# ls -l /dev/mapper/
total 0
crw------- 1 root root 10, 236 2011-06-05 09:04 control
lrwxrwxrwx 1 root root 7 2011-06-05 09:04 mf-devs -> ../dm-3
lrwxrwxrwx 1 root root 7 2011-06-05 09:04 mf-devs2 -> ../dm-5
lrwxrwxrwx 1 root root 7 2011-06-05 09:04 mf-devs3 -> ../dm-6
lrwxrwxrwx 1 root root 7 2011-06-05 09:04 mf-devs4 -> ../dm-8
lrwxrwxrwx 1 root root 7 2011-06-05 09:04 mf-dspp -> ../dm-1
lrwxrwxrwx 1 root root 7 2011-06-05 09:04 mf-lxc -> ../dm-0
lrwxrwxrwx 1 root root 7 2011-06-12 00:52 mf-mail -> ../dm-9
lrwxrwxrwx 1 root root 7 2011-06-05 09:04 mf-matchbox -> ../dm-4
lrwxrwxrwx 1 root root 7 2011-06-05 09:04 mf-muze -> ../dm-2
lrwxrwxrwx 1 root root 8 2011-06-14 17:18 mf-shared -> ../dm-10
lrwxrwxrwx 1 root root 7 2011-06-05 09:04 mf-tests -> ../dm-7
root at mf:~# ls -l /dev/dm*
brw-rw---- 1 root disk 251, 0 2011-06-05 09:04 /dev/dm-0
brw-rw---- 1 root disk 251, 1 2011-06-05 09:04 /dev/dm-1
brw-rw---- 1 root disk 251, 2 2011-06-05 09:04 /dev/dm-2
brw-rw---- 1 root disk 251, 3 2011-06-05 09:04 /dev/dm-3
brw-rw---- 1 root disk 251, 4 2011-06-05 09:04 /dev/dm-4
brw-rw---- 1 root disk 251, 5 2011-06-05 09:04 /dev/dm-5
brw-rw---- 1 root disk 251, 6 2011-06-05 09:04 /dev/dm-6
brw-rw---- 1 root disk 251, 7 2011-06-05 09:04 /dev/dm-7
brw-rw---- 1 root disk 251, 8 2011-06-05 09:04 /dev/dm-8
brw-rw---- 1 root disk 251, 9 2011-06-12 00:52 /dev/dm-9
root at mf:~#
Ubuntu 11.04 server amd64, kernel 2.6.38-8-server.
ii udev 167-0ubuntu3 rule-based device node and kernel event manager
ii lvm2 2.02.66-4ubuntu2 The Linux Logical Volume Manager
ii libdevmapper-event1.02.1 2:1.02.48-4ubuntu2 The Linux Kernel Device Mapper userspace library
ii libdevmapper1.02.1 2:1.02.48-4ubuntu2 The Linux Kernel Device Mapper userspace library
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