Bug#857743: reason for kernel-panic

[Andreas Glaeser]

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Now I was sitting down again to install without md-raid and without XFS-root.
I can reconfirm, that the described problem does not appear with BTRFS-raid only:

> /dev/sda5      btrfs     46872576 2298224  44044944   5% /
> udev           devtmpfs     10240       0     10240   0% /dev
> tmpfs          tmpfs       769428    8936    760492   2% /run
> tmpfs          tmpfs      1923568       0   1923568   0% /dev/shm
> tmpfs          tmpfs         5120       0      5120   0% /run/lock
> tmpfs          tmpfs      1923568       0   1923568   0% /sys/fs/cgroup
> /dev/sda6      btrfs     74217472    1280  72051712   1% /home
> /dev/sda1      xfs         972460   88268    884192  10% /boot
> /dev/sdb1      xfs       30712168 3630772  27081396  12% /mnt/usb

> Disk /dev/mmcblk0: 59.5 GiB, 63864569856 bytes, 124735488 sectors
> Units: sectors of 1 * 512 = 512 bytes
> Sector size (logical/physical): 512 bytes / 512 bytes
> I/O size (minimum/optimal): 512 bytes / 512 bytes
> Disklabel type: dos
> Disk identifier: 0xe2290299
> 
> Device         Boot    Start       End  Sectors  Size Id Type
> /dev/mmcblk0p1          2048  46874623 46872576 22.4G 83 Linux
> /dev/mmcblk0p2      46876670 121094143 74217474 35.4G  5 Extended
> /dev/mmcblk0p5      46876672 121094143 74217472 35.4G 83 Linux
> 
> Disk /dev/sda: 232.9 GiB, 250059350016 bytes, 488397168 sectors
> Units: sectors of 1 * 512 = 512 bytes
> Sector size (logical/physical): 512 bytes / 512 bytes
> I/O size (minimum/optimal): 512 bytes / 512 bytes
> Disklabel type: dos
> Disk identifier: 0x40bc4016
> 
> Device     Boot     Start       End   Sectors  Size Id Type
> /dev/sda1  *         2048   1953791   1951744  953M 83 Linux
> /dev/sda2         1955838 130861055 128905218 61.5G  5 Extended
> /dev/sda5         1955840  48828415  46872576 22.4G 83 Linux
> /dev/sda6        48830464 123047935  74217472 35.4G 83 Linux
> /dev/sda7       123049984 130861055   7811072  3.7G 82 Linux swap / Solaris

The setup-history was as follows:

#  btrfs device add -f /dev/mmcblk0p1 /
#  btrfs balance start -v -mconvert=raid1 -dconvert=raid1 /
#  btrfs device add -f /dev/mmcblk0p5 /home
#  btrfs balance start -v -mconvert=raid1 -dconvert=raid1 /home
  (init 6)
#  echo "deb http://ftp2.debian.org/debian jessie-backports main contrib non-free"
#  >> /etc/apt/sources.list
#  echo "Package: *" >> /etc/apt/preferences
#  echo "Pin: release a=jessie-backports" >> etc/apt/preferences
#  echo "Pin: release a=jessie-backports" >> /etc/apt/preferences
#  echo "Pin-Priority: 520" >> /etc/apt/preferences
#  echo "alias ate='aptitude'" >> .profile 
#  source .profile 
#  ate update
#  ate upgrade

It is workable now, so the problem may be located in the vicinity of systemd, but it
actually does not show without XFS on md-RAID and hybrid filesystem-/.

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