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Btrfs Gets Big Changes, Features In Linux 3.14 Kernel

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  • Btrfs Gets Big Changes, Features In Linux 3.14 Kernel

    Phoronix: Btrfs Gets Big Changes, Features In Linux 3.14 Kernel

    While the EXT4 changes and XFS alterations for the Linux 3.14 kernel weren't too exciting, the Btrfs file-system update was submitted today for Linux 3.14 and it's definitely exciting...

    http://www.phoronix.com/vr.php?view=MTU4ODA

  • #2
    I wonder if making use of immutable biovars is in this pull or not...

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    • #3
      still no lz4 support

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      • #4
        I haven't had my btrfs volume balancing for a few days now, because of some kernel bug that should see patches in an early 1.13 release.

        Hoping I can last that long, I backed up the disc already.

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        • #5
          This pull request has sysfs additions and doesn't come with the mandatory Documentation/ABI entries?
          Or user-friendly documentation for that matter?
          For shame.

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          • #6
            Originally posted by mercutio View Post
            still no lz4 support
            As far as I know, no one is actually working on this right now. It doesn't seem as though there is anyone who is interested enough in this at the moment, as there continues to be lots going on in btrfs development.

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            • #7
              Is there or will there be an effort to make ensure that BTRFS is as fast as or faster than EXT4? I know BTRFS is all about features rather than performance, but the average home user doesn't need all of those advanced features. For me, faster makes a less painful time redoing my operating system and transfering all of my files every 6 months.

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              • #8
                Originally posted by Prescience500 View Post
                Is there or will there be an effort to make ensure that BTRFS is as fast as or faster than EXT4? I know BTRFS is all about features rather than performance, but the average home user doesn't need all of those advanced features. For me, faster makes a less painful time redoing my operating system and transfering all of my files every 6 months.
                they're both pretty fast for most purposes, and pretty slow for things like maildir mailboxes.

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                • #9
                  Originally posted by Prescience500 View Post
                  Is there or will there be an effort to make ensure that BTRFS is as fast as or faster than EXT4? I know BTRFS is all about features rather than performance, but the average home user doesn't need all of those advanced features. For me, faster makes a less painful time redoing my operating system and transfering all of my files every 6 months.

                  If you have an ssd use f2fs. That seems to be pretty much the fastest one around. Well, maybe not for db, or heavily queued work.

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                  • #10
                    Originally posted by Prescience500 View Post
                    Is there or will there be an effort to make ensure that BTRFS is as fast as or faster than EXT4? I know BTRFS is all about features rather than performance, but the average home user doesn't need all of those advanced features. For me, faster makes a less painful time redoing my operating system and transfering all of my files every 6 months.
                    Checksum file integrity, transparent compression, and cow snapshots are features I couldn't live without.

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                    • #11
                      Originally posted by liam View Post
                      If you have an ssd use f2fs. That seems to be pretty much the fastest one around. Well, maybe not for db, or heavily queued work.
                      But then you'd have to deal with a separate /boot partition and all that crap, right?

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                      • #12
                        Originally posted by Prescience500 View Post
                        Is there or will there be an effort to make ensure that BTRFS is as fast as or faster than EXT4? I know BTRFS is all about features rather than performance, but the average home user doesn't need all of those advanced features. For me, faster makes a less painful time redoing my operating system and transfering all of my files every 6 months.
                        For certain operations, a COW filesystem will never be as fast as ext4. It is just not possible.

                        Perhaps if you turned off COW, then it may be feasible for btrfs to match, or nearly match, ext4 in almost all types of IO. I'm not saying it does now, but it would at least seem an attainable goal, in the unlikely chance that the btrfs developers made it a high priority.

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                        • #13
                          Originally posted by WonderWoofy View Post
                          As far as I know, no one is actually working on this right now. It doesn't seem as though there is anyone who is interested enough in this at the moment, as there continues to be lots going on in btrfs development.
                          Just another symptom of the poor project management for btrfs. That is the sort of project that could be completed relatively quickly and provide some significant benefits.

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                          • #14
                            Originally posted by johnc View Post
                            But then you'd have to deal with a separate /boot partition and all that crap, right?
                            Whys that such a big deal? Just fire off a 100mb /boot and leave it be

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                            • #15
                              Originally posted by jwilliams View Post
                              Just another symptom of the poor project management for btrfs. That is the sort of project that could be completed relatively quickly and provide some significant benefits.
                              Significant benefits such as? They already have some compression options, why would lz4 be significantly better?

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