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- * cleanup, add more error checking, get rid of BUG_ONs
- * Fix ENOSPC handling
- * Add block mapping tree (simple dm layer)
- * Make allocator smarter
- * add a block group to struct inode
- * Make sure nobh stuff is working properly for cows
- * Do actual block accounting
- * Check compat and incompat flags on the inode
- * Add virtual filesystems, mountable snapshots
- * Get rid of struct ctree_path, limiting tree levels held at one time
- * EEXIST for dirs instead of hash overflow
- * Release
- * Do real tree locking
- * Add extent mirroring (backup copies of blocks)
- * Add fancy interface to get access to incremental backups
- * Add fancy striped extents to make big reads faster
- * Use relocation to try and fix write errors
- * Make allocator much smarter
- * xattrs (directory streams for regular files)
- * fsck
- * Scrub & defrag
- ---
- metata FS ideas:
- mount metadata FS on /sys/fs/btrfs/dev/
- subvolumes in /sys/fs/btrfs/dev/fs/
- snapshots in /sys/fs/btrfs/dev/fs/snapshots
- mount -o bind
- ioctl to create a snapshot
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