xfsprogs: noalloc allocation groups [RFC 56/62]
This series creates a new NOALLOC flag for allocation groups that causes
the block and inode allocators to look elsewhere when trying to
allocate resources. This is either the first part of a patchset to
implement online shrinking (set noalloc on the last AGs, run fsr to move
the files and directories) or freeze-free rmapbt rebuilding (set
noalloc to prevent creation of new mappings, then hook deletion of old
mappings). This is still totally a research project.
This has been running on the djcloud for months with no problems. Enjoy!
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
xfs_io: enhance the aginfo command to control the noalloc flag
Augment the aginfo command to be able to set and clear the noalloc
state for an AG.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2 files changed
