Btrfs: fix OOPS of empty filesystem after balance

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btrfs will remove unused block groups after balance.
When a empty filesystem is balanced, the block group with tag "DATA" may be
dropped, and after umount and mount again, it will not find "DATA" space_info
and lead to OOPS.
So we initial the necessary space_infos(DATA, SYSTEM, METADATA) to avoid OOPS.

Reported-by: Daniel J Blueman <daniel.blueman@gmail.com>
Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

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liubo 2011-03-07 02:13:14 +00:00 • committed by root

parent 9f7c43c967

commit c59021f846

3 changed files with 30 additions and 0 deletions

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1

fs/btrfs/ctree.h

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6

fs/btrfs/disk-io.c

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23

fs/btrfs/extent-tree.c

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