Diff for "btrfs"

Differences between revisions 1 and 12 (spanning 11 versions)
⇤ ← Revision 1 as of 2009-01-14 21:08:02 →
Size: 310
Editor: 204
Comment: Initial TOC dump. To be revised later.
← Revision 12 as of 2009-02-12 18:03:10 → ⇥
Size: 2755
Editor: 204
Comment: update patch link. Still not really working.
Deletions are marked like this. Additions are marked like this.
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Basic description of btrfs. Strengths, weaknesses, why is this important, etc.

== Features: ==
 * Extent based file storage (2^64 max file size)
 * Space efficient packing of small files
 * Space efficient indexed directories
 * Dynamic inode allocation
 * Writable snapshots
 * Subvolumes (separate internal filesystem roots)
 * Object level mirroring and striping
 * Checksums on data and metadata (multiple algorithms available)
 * Compression
 * Integrated multiple device support, with several raid algorithms
 * Online filesystem check
 * Very fast offline filesystem check
 * Efficient incremental backup and FS mirroring
 * Online filesystem defragmentation
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'''NOT ACTUALLY WORKING YET'''

[[http://btrfs.wiki.kernel.org/index.php/Getting_started | btrfs wiki getting started page]]

=== Kernel Module Dependencies ===
8.10 Kernel 2.6.27-9-generic
 * CONFIG_LIBCRC32C=m
 * CONFIG_ZLIB_INFLATE=y
 * CONFIG_ZLIB_DEFLATE=m


 * build-essential: make, compiler, etc
 * linux-headers-2.6.27-9-generic: latest kernel headers

{{{
sudo apt-get install build-essential linux-headers-2.6.27-9-generic
}}}

Patch: [[http://permalink.gmane.org/gmane.comp.file-systems.btrfs/2562]]

Download, patch and compile code:
{{{
wget http://www.kernel.org/pub/linux/kernel/people/mason/btrfs/btrfs-0.17.tar.bz2
tar -jxvf btrfs-0.17.tar.bz2
cd btrfs-0.17
#apply patch
make
}}}

'''Currently btrfs does not work with kernel 2.6.27'''

Ensure modules are up and running, and insert btrfs module into kernel.
{{{
sudo modprobe libcrc32c zlib_inflate zlib_deflate
sudo insmod btrfs.ko
}}}

=== btrfs progs dependencies ===
{{{
sudo apt-get install e2fsprogs uuid-dev
}}}

{{{
wget http://www.kernel.org/pub/linux/kernel/people/mason/btrfs/btrfs-progs-0.17.tar.bz2
tar -jxvf btrfs-progs-0.17.tar.bz2
make
}}}

'''btrfs-progs compile fine'''
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 * How to format disk as btrfs
 * How to grow/shrink file system
 * How to create snapshots
 * How to access snapshots
 * How to convert ext2/3(/4?) partitions to btrfs
 * How to create an image of a btrfs file system
 * How to restore from an image of a btrfs file system
 * How to recover from a failed device
 * How to add another device to file system
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= Trouble shooting = [[http://btrfs.wiki.kernel.org/index.php/Category:Documentation|btrfs wiki documentation category]]
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= Troubleshooting =
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= Alternatives =
 * Tux3?
 * ZFS over Fuse?
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[http://btrfs.wiki.kernel.org/ btrfs home page]
[http://en.wikipedia.org/wiki/Btrfs btrfs wikipedia page]		 = Links =
 * [[http://btrfs.wiki.kernel.org/|btrfs home page]]
 * [[http://en.wikipedia.org/wiki/Btrfs|btrfs wikipedia page]]

Placeholder page for btrfs info and usage instructions.

What is btrfs

Basic description of btrfs. Strengths, weaknesses, why is this important, etc.

Features:

  • Extent based file storage (2^64 max file size)
  • Space efficient packing of small files
  • Space efficient indexed directories
  • Dynamic inode allocation
  • Writable snapshots
  • Subvolumes (separate internal filesystem roots)
  • Object level mirroring and striping
  • Checksums on data and metadata (multiple algorithms available)
  • Compression
  • Integrated multiple device support, with several raid algorithms
  • Online filesystem check
  • Very fast offline filesystem check
  • Efficient incremental backup and FS mirroring
  • Online filesystem defragmentation

How to install

Ubuntu 8.10 Intrepid

NOT ACTUALLY WORKING YET

btrfs wiki getting started page

Kernel Module Dependencies

8.10 Kernel 2.6.27-9-generic

  • CONFIG_LIBCRC32C=m
  • CONFIG_ZLIB_INFLATE=y
  • CONFIG_ZLIB_DEFLATE=m
  • build-essential: make, compiler, etc
  • linux-headers-2.6.27-9-generic: latest kernel headers 

sudo apt-get install build-essential linux-headers-2.6.27-9-generic

Patch: http://permalink.gmane.org/gmane.comp.file-systems.btrfs/2562

Download, patch and compile code: 

wget http://www.kernel.org/pub/linux/kernel/people/mason/btrfs/btrfs-0.17.tar.bz2
tar -jxvf btrfs-0.17.tar.bz2
cd btrfs-0.17
#apply patch
make

Currently btrfs does not work with kernel 2.6.27

Ensure modules are up and running, and insert btrfs module into kernel. 

sudo modprobe libcrc32c zlib_inflate zlib_deflate
sudo insmod btrfs.ko

btrfs progs dependencies

sudo apt-get install e2fsprogs uuid-dev

wget http://www.kernel.org/pub/linux/kernel/people/mason/btrfs/btrfs-progs-0.17.tar.bz2
tar -jxvf btrfs-progs-0.17.tar.bz2
make

btrfs-progs compile fine

Ubuntu 9.04 Jaunty

How to use

  • How to format disk as btrfs
  • How to grow/shrink file system
  • How to create snapshots
  • How to access snapshots
  • How to convert ext2/3(/4?) partitions to btrfs
  • How to create an image of a btrfs file system
  • How to restore from an image of a btrfs file system
  • How to recover from a failed device
  • How to add another device to file system

btrfs wiki documentation category

Troubleshooting

Alternatives

  • Tux3?
  • ZFS over Fuse?

Links

btrfs (last edited 2013-07-03 18:13:17 by localhost)