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EXT4 Gains New Online Resize Support In Linux 3.3

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  • EXT4 Gains New Online Resize Support In Linux 3.3

    Phoronix: EXT4 Gains New Online Resize Support In Linux 3.3

    The EXT4 file-system pull request went in today for the Linux 3.3 kernel. The EXT4 updates for this next kernel include the new online resize interface...

    http://www.phoronix.com/vr.php?view=MTA0MDg

  • #2
    impressive

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    • #3
      What is the purpouse of this resize?

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      • #4
        Originally posted by Drago View Post
        What is the purpouse of this resize?
        So if you go and resize your ext4 partition it doesn't take as long...

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        • #5
          How come a 100GB resize is so much faster than a 20GB one?

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          • #6
            Does this allow you to shrink it or just grow it? If it allows online shrinking then that's bloody fantastic. I doubt it somehow though. I don't know of any other filesystem that can do that off the top of my head.

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            • #7
              I'm guessing this is about growing, not shrinking, especially with those stellar results (shrinking normally involves compacting data, so it will take a while).
              Nevertheless, very useful, especially on virtualized environments, where you can just "ask" for a bigger disk from a SAN, and online-grow the fs to use it.

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              • #8
                Originally posted by Bob Loblaw View Post
                How come a 100GB resize is so much faster than a 20GB one?
                By the magic of Michael only understanding half of the source before rephrasing everything and passing it off as an article. It's unfortunate, but often reading phoronix news is more productive if you find the external link and read that instead :/

                The first resize is from 20GB to 360GB (+340GB), the second from 100GB to 360GB (+260GB). And suddenly the numbers make sense!

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                • #9
                  Very bad article. It's the lowest quality writing I have ever seen in a Phoronix article.

                  Michael, are you sick? No, I'm not trying to be funny. Your writing suggest there might be something wrong with you. You should go see a doctor.

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                  • #10
                    This will be really useful in conjunction with LVM.

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                    • #11
                      Originally posted by RealNC View Post
                      Very bad article. It's the lowest quality writing I have ever seen in a Phoronix article.

                      Michael, are you sick? No, I'm not trying to be funny. Your writing suggest there might be something wrong with you. You should go see a doctor.
                      Working so much [even all the Phoronix work is only part of my equation] can't come without its side effects and consequences...
                      Michael Larabel
                      http://www.michaellarabel.com/

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                      • #12
                        Looks like some dual-boot people will be happy. If a partition can grow in size automatically, then there's no need to preallocate space.

                        Unfortunately Ntfs-resize is still a little bit slow. . Crushes my dreams a little bit.

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                        • #13
                          interesting

                          It took me 1hr to move my ~100GB (40 used) ext4 partition on my SSD to a 1MiB alignment using gparted livecd yesterday.
                          For some reason gparted does a "move" stage then a "copy" stage, both adding up to about 1hr. Not sure what to think of this resize support in ext4.

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                          • #14
                            Please clarify whether this new implementation has support for shrinking partition/filesystem online?

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                            • #15
                              Curious to know whether this new online resize support is for shrinking the partition without unmounting
                              the filesystem. I hope this has support for expanding the partition.
                              Please clarify.

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