udevadm settle hangs

[Thomas Zehetbauer]

Binary package hint: udev

I am trying to automatically mount a LUKS volume when I log in:

/etc/security/pam_mount.conf:
<volume path="/dev/sda3" user="tom"/>

/etc/fstab:
/dev/sda3 /media/sda3 crypt defaults,noauto,nodev,nosuid 0 0

Instead of mounting the volume this causes the login process to get stuck:

mount -p0 -o defaults,noauto,nodev,nosuid -t auto /dev/sda3 /media/sda3
/sbin/mount.crypto_LUKS /dev/sda3 /media/sda3 -o rw,nosuid,nodev
cryptsetup luksOpen /dev/sda3 _dev_sda3
sh -c /sbin/udevadm settle
/sbin/udevadm settle

I am currently using chmod 644 /sbin/udevadm as a workaround.

[Scott James Remnant (Canonical) (canonical-scott)]

Try "udevadm settle --timeout=10"

it may print output after 10s, if so, supply that

[Thomas Zehetbauer (realborg)]

I now wrote a wrapper to call "udevadm settle --timeout 30" instead of udevadm.

It still hangs in rt_sigsuspend(~[TRAP KILL SEGV STOP RTMIN RT_1])

[Patrick Domack (patrickdk)]

I am having the same issue, using lkus dm_crypt mount on user login.
Using ubuntu 9.04 with all updates current as of today.
I made a sample wrapper script also like said above, but it still hangs with the --timeout=10

#!/bin/sh
OPTION=""
if [ "$1" = "settle" ]; then
  OPTION="--timeout=10"
fi
/sbin/udevadm.orig "$@" $OPTION

[Thomas Zehetbauer (realborg)]

mv /sbin/udevadm /sbin/udevadm.real
cat >/sbin/udevadm <<EOF
#!/bin/sh
if [ "$1" == "settle" ] ; then
    sleep 1
else
    exec /sbin/udevadm.real "$@"
fi
EOF
chmod 755 /sbin/udevadm

[Christian Iversen (chrivers)]

Why is this bug incomplete? It has all the steps to reproduce, and it can be consistently reproduced.

[Christian Iversen (chrivers)]

This bug has a proposed patch and a discussion of the problem:

http://thread.gmane.org/gmane.linux.kernel.device-mapper.dm-crypt/2804

[Christian Iversen (chrivers)]

One last thing. The Gentoo Bugs mailing list has a discussion of the same problem. Several people have reported back that the mentioned patch works fine. No one has reported that it does not work:

http://bugs.gentoo.org/242778

Please consider getting this patch into cryptsetup, as the functionality is currently severely hampered.

[Launchpad Janitor (janitor)]

[Expired for cryptsetup (Ubuntu) because there has been no activity for 60 days.]