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Bug#863290: src:linux: no warning that btrfs RAID5/6 is buggered up



Package: src:linux
Followup-For: Bug #863290

Dear Maintainer,

I would like voice my concern as well. Btrfs RAID5/6 really needs a warning.
These days most (if not all) of the problems you see with Btrfs is caused by
the unstable features (https://btrfs.wiki.kernel.org/index.php/Status).

RAID5/6 in kernel 4.9 is less than stellar and should absolutely not be used
for anything except testing and experimentation.

RAID1 actually needs a warning too. It will not work as "classic" RAID1 e.g.
it need to be able to make two copies always to not get stuck in read only mode.
You will not loose your data which is a good thing, but to be safe you need a
minimum of 3 devices (I would prefer four or more to be on the safe side).

-- System Information:
Debian Release: 9.0
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64
 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.0-3-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)


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