Bug#761812: systemd regression: tries to mount /export twice at boot time

[Harald Dunkel]

Package: systemd
Version: 208-8

Sometimes systemd tries to mount /export twice at boot time,
even though /etc/fstab contains just a single line for it.
Since the second mount fails with "already mounted" the
system ends up in interactive maintenance mode, asking for the
root password and recommending to read a few thousand lines
of journalctl output (not included here).

This feels to happen about 1 of 20 reboots of my laptop.

/ and /export are partitions on an encrypted block device (sda2).
Only /boot (sda1) is not encrypted. Here are the necessary tables:


% cat /etc/fstab
# file system                                   mount point     type            options                 dump    pass
proc                                            /proc           proc            defaults                0       0
# /dev/mapper/vg00-root LABEL=root
UUID=92325a57-aefb-4f62-ac31-e0f278c37151       /               ext4            noatime                 0       1
# /dev/sda1 LABEL=boot
UUID=03251663-204e-471a-b093-bb0da815bf72       /boot           ext4            noatime                 0       2
# /dev/mapper/vg00-export LABEL=export
UUID=6e56c46a-8868-4e9e-ad56-8c131dd45f61       /export         ext4            noatime                 0       2
# /dev/mapper/vg00-rootbak LABEL=rootbak
UUID=4092c246-6d69-4071-ab10-f85e911ce352       none            ext4            noatime                 0       0
# /dev/mapper/vg00-swap LABEL=swap
UUID=690457f1-4a9d-4bb6-b50c-296793491a7e       none            swap            defaults                0       0
/dev/sr0                                        /cdrom          udf,iso9660     user,noauto,ro          0       0


% blkid | sort
/dev/dm-2: LABEL="swap" UUID="690457f1-4a9d-4bb6-b50c-296793491a7e" TYPE="swap"
/dev/dm-3: LABEL="rootbak" UUID="4092c246-6d69-4071-ab10-f85e911ce352" TYPE="ext4"
/dev/mapper/pv00: UUID="JxB8iq-8Z3L-0OpU-Vh8O-0Bwt-ynuX-r4033k" TYPE="LVM2_member"
/dev/mapper/vg00-export: LABEL="export" UUID="6e56c46a-8868-4e9e-ad56-8c131dd45f61" TYPE="ext4"
/dev/mapper/vg00-root: LABEL="root" UUID="92325a57-aefb-4f62-ac31-e0f278c37151" TYPE="ext4"
/dev/mapper/vg00-rootbak: LABEL="rootbak" UUID="4092c246-6d69-4071-ab10-f85e911ce352" TYPE="ext4"
/dev/mapper/vg00-swap: LABEL="swap" UUID="690457f1-4a9d-4bb6-b50c-296793491a7e" TYPE="swap"
/dev/sda1: LABEL="boot" UUID="03251663-204e-471a-b093-bb0da815bf72" TYPE="ext4"
/dev/sda2: UUID="ca74a47d-3110-4eb7-b412-416df77377b9" TYPE="crypto_LUKS"
/dev/sdb1: SEC_TYPE="msdos" LABEL="ssdboot" UUID="BE2B-D1AB" TYPE="vfat"


% cat /etc/crypttab
# <target name> <source device>         <key file>      <options>
pv00 UUID=ca74a47d-3110-4eb7-b412-416df77377b9 none luks
#pv01 UUID=a0388fed-8404-4e32-8e78-016441830df0 pv00 luks,keyscript=/lib/cryptsetup/scripts/decrypt_derived


Nothing unusual, AFAICS.

Please mail if I can help to track this down. Regards
Harri