Bug#783509: systemd: /tmp purged on every reboot

[Andreas Metzler]

On 2015-04-27 Michael Biebl <biebl at debian.org> wrote:
> Am 27.04.2015 um 19:15 schrieb Andreas Metzler:
>> On 2015-04-27 Michael Biebl <biebl at debian.org> wrote:
[...]
>>> Or maybe, have you tmpfs-on-tmp enabled?

>> thanks for the help, that is exactly what seems to have happened:
[...]
>> ametzler at argenau:~$ mount | grep ' /tmp'
>> tmpfs on /tmp type tmpfs (rw)
>> ametzler at argenau:~$ systemctl list-dependencies --reverse tmp.mount
>> tmp.mount
>> ● ├─chroots-amd64\x2djessie-tmp.mount
>> ● ├─chroots-amd64\x2dwheezy-tmp.mount
>> ● ├─chroots-etch-tmp.mount
>> [...]
>> ● └─chroots-wheezy-tmp.mount
>> --------------------------------------

>> The reverse dependencies are just bind-mounts:
>> ametzler at argenau:~$ grep /wheezy.*tmp /etc/fstab
>> /tmp            /chroots/wheezy/tmp        none    bind,auto        0       0

>> It looks like this started on April 5 (journalctl history goes back to
>> 2014):
[...]
>> /var/log/apt/history.log marks the upgrade to systemd 215-14 from -12 as
>> triggering point:

> So you're saying, with 215-12, tmp.mount was not automatically mounted?

Hello,

Yes, unless the logfile has suddenly increased in verbosity ATM. The
"Mounting Temporary Directory..." message started appearing after that
upgrade.

> Can you verify that by downgrading the packages from snapshot.debian.org?

I am reluctant to do so, since this is my main system and downgrades
are generally not handled (that well) in package maintainer-scripts.

> Regarding those chroots-*-tmp.mount dependencies?

> Who is creating those mounts? Maybe they didn't exist when you have -12
> installed? How are they created? Are those bind mounts (via fstab)?

They have been setup (manually) in fstab:
/tmp     /chroots/wheezy/tmp        none    bind,auto     0  0

> Can you attach a systemd-analyze dump, please.

Sure.

cu Andreas
-- 
`What a good friend you are to him, Dr. Maturin. His other friends are
so grateful to you.'
`I sew his ears on from time to time, sure'
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