f243fcd1b2
With the commit 002d021c (committed October 2011)
btrfsctl, btrfs-vol, btrfs-show were declared deprecated.
The last patches related to these commands are dated December 2010.
These tools are replaced by the "btrfs" tool in all the
functionality.
This commit removes all the related code.
Signed-off-by: Goffredo Baroncelli <kreijack@inwind.it>
Signed-off-by: David Sterba <dsterba@suse.cz>
54 lines
1.5 KiB
Text
54 lines
1.5 KiB
Text
Install Instructions
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Btrfs uses libcrc32c in the kernel for file and metadata checksums. You need
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to compile the kernel with:
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CONFIG_LIBCRC32C=m
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libcrc32c can be static as well. Once your kernel is setup, typing make in the
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btrfs module sources will build against the running kernel. When the build is
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complete:
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modprobe libcrc32c
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insmod btrfs.ko
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The Btrfs utility programs require libuuid to build. This can be found
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in the e2fsprogs sources, and is usually available as libuuid or
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e2fsprogs-devel from various distros.
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Building the utilities is just make ; make install. The programs go
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into /usr/local/bin. The mains commands available are:
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mkfs.btrfs: create a filesystem
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btrfs: control program to create snapshots and subvolumes:
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# mount a btrfs filesystem
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mount /dev/sda2 /mnt
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# create a subvolume
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btrfs subvolume create /mnt/new_subvol_name
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# snapshot of a subvolume
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btrfs subvolume snapshot /mnt/default /mnt/snapshot_of_default
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btrfs subvolume snapshot /mnt/snapshot_of_default \
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/mnt/snapshot_of_a_snapshot
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# list of the subvolumes
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ls /mnt
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default snapshot_of_a_snapshot snapshot_of_new_subvol
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new_subvol_name snapshot_of_default
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# removal of a subvolume or a snapshot
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btrfs subvolume delete /mn/snapshot_of_a_snapshot
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# look a the btrfs man page for further information
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man btrfs
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btrfsck: do a limited check of the FS extent trees.</li>
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btrfs-debug-tree: print all of the FS metadata in text form. Example:
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btrfs-debug-tree /dev/sda2 >& big_output_file
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