btrfs: warn about dev extents that are inside the reserved range

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Btrfs on-disk format has reserved the first 1MiB for the primary super
block (at 64KiB offset) and bootloaders may also use this space.

This behavior is only introduced since v4.1 btrfs-progs release,
although kernel can ensure we never touch the reserved range of super
blocks, it's better to inform the end users, and a balance will resolve
the problem.

Signed-off-by: Qu Wenruo <wqu@suse.com>
[ update changelog and message ]
Signed-off-by: David Sterba <dsterba@suse.com>

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Qu Wenruo 2022-06-13 15:06:35 +08:00 • committed by David Sterba

parent 37f85ec320

commit 3613249a1b

1 changed files with 10 additions and 0 deletions

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fs/btrfs/volumes.c

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