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Reaching Beyond Two-Terabyte Filesystems

Posted by timothy on from the how-long-did-these-take-to-rip dept.

Jeremy Andrews writes: "Peter Chubb posted a patch to the lkml, with which he's now managed to mount a 15 terabyte file (using JFS and the loopback device). Without the patch, Peter explains, "Linux is limited to 2TB filesystems even on 64-bit systems, because there are various places where the block offset on disc are assigned to unsigned or int 32-bit variables." Peter works on the Gelato project in Australia. His efforts include cleaning up Linux's large filesystem support, removing 32-bit filesystem limitations. When I asked him about the new 64-bit filesystem limits, he offered a comprehensive answer and this interesting link. The full thread can be found here on KernelTrap. Reaching beyond terabytes, beyond pentabytes, on into exabytes. I feel this sudden discontent with my meager 60 gigabyte hard drive..."

3 of 173 comments (clear)

  1. pentabytes? by circletimessquare · · Score: 5, Funny

    what is that, 5 bytes? ;-P

    --
    intellectual property law is philosophically incoherent. it is your moral duty to ignore it or sabotage it
  2. Wow! by gazbo · · Score: 5, Funny
    Any other patches been submitted to the kernel? Perhaps an off-by-one error has been found; maybe an unchecked buffer has been fixed?

    Keep it up guys - until they create some sort of 'Linux kernel mailing list' the Slashdot front page is my only source for this information.

  3. xfs for linux by mysticbob · · Score: 5, Informative
    xfs for linux has provided significantly larger than 2Tb filesystems for a while. the official size supported is:

    26^3 = 9 x 10^18 = 9 exabytes

    check out the feature list.