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Linux 5.10 To See RAID10 DISCARD Improvement - From 259 Seconds To Less Than 1 Second

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  • Linux 5.10 To See RAID10 DISCARD Improvement - From 259 Seconds To Less Than 1 Second

    Phoronix: Linux 5.10 To See RAID10 DISCARD Improvement - From 259 Seconds To Less Than 1 Second

    Queued today into the block subsystem's "-next" area ahead of the Linux 5.10 cycle kicking off next month are some MD RAID enhancements...

    http://www.phoronix.com/scan.php?pag...er-RAID10-Trim

  • #2
    Is it a good idea to use MD RAID5 anymore? Now that there are systems like ZFS and Btrfs.

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    • #3
      MD RAID 5 is faster than ZFS RAID-Z1, but also less resilient against data loss due to the RAID write hole. Btrfs RAID 5 has the same characteristics as MD RAID 5 - it's fast but a power outage can cause data loss.

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      • #4
        A power outage causing data lose in a methodology (R5) that's meant to prevent data loss.

        FFS.

        Glad I gave up BTRFS.

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        • #5
          Originally posted by stiiixy View Post
          A power outage causing data lose in a methodology (R5) that's meant to prevent data loss.

          FFS.

          Glad I gave up BTRFS.
          I don't see that as a problem at all. If your data is important, then why would you allow power outage?

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          • #6
            Originally posted by stiiixy View Post
            A power outage causing data lose in a methodology (R5) that's meant to prevent data loss.

            FFS.

            Glad I gave up BTRFS.
            I wouldn't run RAID 5 or 6 with MD RAID either. For those the only good option is a hardware card.

            I'm running btrfs RAID-10 with six drives and a second RAID-1 of two SSD drives. It's pretty great.

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            • #7
              R10 was what I settled on as well. 5/6 clearly haven't settled down.

              Good ol' disconnected HDD's shoved in a cupboard for restoration. Personal use only =D

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              • #8
                Originally posted by caligula View Post
                Is it a good idea to use MD RAID5 anymore?
                No

                https://www.zdnet.com/article/why-ra...rking-in-2009/
                https://www.zdnet.com/article/why-ra...rking-in-2019/

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