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zfsonlinux / pkg-zfs

Native ZFS packaging for Debian and Ubuntu
https://launchpad.net/~zfs-native/+archive/daily
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Ubuntu 14.04 zfs on root, bug with apt-get, remount tmp #165

Closed alex-morgun closed 8 years ago

alex-morgun commented 8 years ago

Not zfs bug, but needs workaround. apt somehow thinks that /tmp is a mount and tries to remount it. I don't want to use tmpfs. Considering loop file based partition on zfs. What's your ideas?

root@x:/tmp# apt-get install htop Reading package lists... Done Building dependency tree Reading state information... Done The following NEW packages will be installed: htop 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded. Need to get 0 B/68.0 kB of archives. After this operation, 188 kB of additional disk space will be used. mount: /tmp not mounted or bad option E: Problem executing scripts DPkg::Pre-Invoke 'mount -o remount,exec /tmp' E: Sub-process returned an error code

Mounts: rpool/ROOT/production on / type zfs (rw,relatime,xattr,noacl)

dajhorn commented 8 years ago

Several things in Ubuntu give /tmp special handling. This particular kind of glitch suggests that the root dataset is actually read-only or has some non-default permissions on it.

If /tmp is glitching inside a ZFS root, then create a dataset for it.

And vice-versa, if /tmp is mounted on a ZFS dataset, then move it elsewhere.

dajhorn commented 8 years ago

This is a known problem in Ubuntu releases before the systemd transition, and this particular ticket is stale, so I will close. Feel free to comment further or reopen if something unique about it becomes apparent.