Installing fails on ubuntu 16.10 when root partition is chosen as btrfs file system.

Default Comment by Bridge

Jul 21 06:36:51 partman: Error running 'tune2fs -l /dev/sdj1'
Jul 21 06:37:18 main-menu[3165]: (process:15799): mount: mounting /dev/sdj1 on /tmp/tmp.xUc5r3 failed: Invalid argument
Jul 21 06:37:18 main-menu[3165]: (process:15799): mount: mounting /dev/sdj1 on /tmp/tmp.rmYCoq failed: Invalid argument
Jul 21 06:37:18 main-menu[3165]: (process:15799): 0
Jul 21 06:37:18 main-menu[3165]: (process:15799): 0
Jul 21 06:37:18 main-menu[3165]: (process:15799): cat: can't open '959736446976-1000204140543/filesystem': No such file or directory
Jul 21 06:37:18 main-menu[3165]: (process:15799): tune2fs: Bad magic number in super-block while trying to open /dev/sdj1
Jul 21 06:37:18 main-menu[3165]: (process:15799): mount: mounting /dev/sdj1 on /tmp/tmp.ns54I0 failed: Invalid argument
Jul 21 06:37:18 main-menu[3165]: (process:15799): mount: mounting /dev/sdj1 on /tmp/tmp.MOY7M5 failed: Invalid argument
Jul 21 06:37:18 main-menu[3165]: (process:15799): 0

/lib/partman/choose_partition/35crypto/choices: paragraph: 1 1048576-8388607 7340032 primary ext2 /dev/sdj1

so, ext2 partition (/boot ?) fails to mount, something odd is going on. Will look more into this later today.

------- Comment From <email address hidden> 2016-07-22 16:31 EDT-------
(In reply to comment #6)
> Jul 21 06:36:51 partman: Error running 'tune2fs -l /dev/sdj1'
> Jul 21 06:37:18 main-menu[3165]: (process:15799): mount: mounting /dev/sdj1
> on /tmp/tmp.xUc5r3 failed: Invalid argument
> Jul 21 06:37:18 main-menu[3165]: (process:15799): mount: mounting /dev/sdj1
> on /tmp/tmp.rmYCoq failed: Invalid argument
> Jul 21 06:37:18 main-menu[3165]: (process:15799): 0
> Jul 21 06:37:18 main-menu[3165]: (process:15799): 0
> Jul 21 06:37:18 main-menu[3165]: (process:15799): cat: can't open
> '959736446976-1000204140543/filesystem': No such file or directory
> Jul 21 06:37:18 main-menu[3165]: (process:15799): tune2fs: Bad magic number
> in super-block while trying to open /dev/sdj1
> Jul 21 06:37:18 main-menu[3165]: (process:15799): mount: mounting /dev/sdj1
> on /tmp/tmp.ns54I0 failed: Invalid argument
> Jul 21 06:37:18 main-menu[3165]: (process:15799): mount: mounting /dev/sdj1
> on /tmp/tmp.MOY7M5 failed: Invalid argument
> Jul 21 06:37:18 main-menu[3165]: (process:15799): 0
>
> /lib/partman/choose_partition/35crypto/choices: paragraph: 1 1048576-8388607
> 7340032 primary ext2 /dev/sdj1
>
> so, ext2 partition (/boot ?) fails to mount, something odd is going on. Will
> look more into this later today.

Interesting. Is there a requirement to have a separate ext2 based /boot filesystem when using btrfs? If so, that's probably the key issue here. I would think that sdj1 is the PReP partition in the above case.

------- Comment on attachment From <email address hidden> 2016-07-26 03:09 EDT-------

I tried to install using btrfs as / and without boot partition, but still btrfs is not detected as root. Attached are the screen shots of the same.

Regression in 21ubuntu1 upload resulted in fstab.d/btrfs script to stop being marked as executable, failing to validate prepared partition map, and to install anything btrfs formatted.

This bug was fixed in the package partman-btrfs - 21ubuntu2

---------------
partman-btrfs (21ubuntu2) yakkety; urgency=medium

  * Mark fstab.d/btrfs as executable, otherwise partman fails to install
    anything with btrfs. LP: #1605399.

 -- Dimitri John Ledkov <email address hidden> Wed, 27 Jul 2016 13:03:46 +0100

Note, server images need to be respun to include the above fix. Earliest image builds with the fix will have serial / datestamp 20160728 or later.

Default Comment by Bridge

------- Comment on attachment From <email address hidden> 2016-07-26 03:09 EDT-------

I tried to install using btrfs as / and without boot partition, but still btrfs is not detected as root. Attached are the screen shots of the same.

Hello,

in the log attached, old partman-btrfs is still in use. The fixed partman-btrfs is 21ubuntu2, in the logs 21ubuntu1 is in use. Also logs are dated 21st of July. Is that the right logs? Or is it just a duplicated mirror of logs.

If you are using a CD you need to update to a CD build that was built after 20160728. If you are using an internal mirror, please check that it has partman-btrfs 21ubuntu2 serving.

Do you have new logs?

Regards,

Dimitri.

Sorry. It appears that our bridge is acting up again. That last attachment was a repeat from July 26.

Make that a repeat from July 21.

------- Comment From <email address hidden> 2016-08-03 10:16 EDT-------
From recent testing of 20101020ubuntu468:

"HI the latest ubuntu release has no problem running with btrfs as /."