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Thread: EXT4 fs beyond 16TB? (non root)

  1. #1
    Join Date
    Sep 2013
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    Athens,Greece
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    EXT4 fs beyond 16TB? (non root)

    Hello,

    I have a sles12 sp3 with the latest patches system which has an ext4 based 16TB fs which i need to further extend..

    i read that ext4 supports 64bit option , but i dont know if this is included in current e2progs package of SLES12 SP3.

    does anyone has successfully extended ext4 beyond 16TB?

    Thank you in advance.

    Michael.
    Amiga 500 , Zx +2 owner
    Long live Dino Dini (Kick off 2 Creator)
    Mitsubishi Evo IX Rules! (HKS EVC-S ,HKS GTII KAI,HKS TBE,HKS suction kit ,HKS Type R IC,Walbro 255 ,HKS 272/278, Motec m800OEM)

    Inflammable means flammable? (Dr Nick Riviera,Simsons Season13)

  2. Re: EXT4 fs beyond 16TB? (non root)

    Quote Originally Posted by maikcat View Post
    Hello,

    I have a sles12 sp3 with the latest patches system which has an ext4 based 16TB fs which i need to further extend..

    i read that ext4 supports 64bit option , but i dont know if this is included in current e2progs package of SLES12 SP3.

    does anyone has successfully extended ext4 beyond 16TB?

    Thank you in advance.

    Michael.
    Hi
    Should be 1EiB....
    Ref: https://www.suse.com/releasenotes/x8...ems.Comparison
    Cheers Malcolm °¿° SUSE Knowledge Partner (Linux Counter #276890)
    SUSE SLE, openSUSE Leap/Tumbleweed (x86_64) | GNOME DE
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    please show your appreciation and click on the star below... Thanks!

  3. #3
    Join Date
    Sep 2013
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    Athens,Greece
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    Re: EXT4 fs beyond 16TB? (non root)

    Good Morning Malcolm and thank you for the response,

    When i try to extent the fs beyond 16Tib i get

    resize2fs 1.42.11 (09-Jul-2014)
    resize2fs: New size too large to be expressed in 32 bits

    any ideas?

    Michael.
    Amiga 500 , Zx +2 owner
    Long live Dino Dini (Kick off 2 Creator)
    Mitsubishi Evo IX Rules! (HKS EVC-S ,HKS GTII KAI,HKS TBE,HKS suction kit ,HKS Type R IC,Walbro 255 ,HKS 272/278, Motec m800OEM)

    Inflammable means flammable? (Dr Nick Riviera,Simsons Season13)

  4. Re: EXT4 fs beyond 16TB? (non root)

    Hello Michael,

    have you tried "tune2fs"? From its man page on the "-O" option:
    The following filesystem features can be set or cleared using tune2fs:

    64bit Enable the file system to be larger than 2^32 blocks.
    Regards,
    J
    From the times when today's "old school" was "new school"

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  5. #5
    Join Date
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    Re: EXT4 fs beyond 16TB? (non root)

    Hello all,

    Already opened case to SUSE which they provided me the -b switch to convert the FS to 64bit which in SLES12 SP3 is not supported
    and i am waiting for a official response....

    so for now if you create an ext4 fs and you expect it to grow beyond 16TiB you are out of luck....

    i will keep you informed.

    Michael.
    Last edited by maikcat; 20-Dec-2018 at 10:14.
    Amiga 500 , Zx +2 owner
    Long live Dino Dini (Kick off 2 Creator)
    Mitsubishi Evo IX Rules! (HKS EVC-S ,HKS GTII KAI,HKS TBE,HKS suction kit ,HKS Type R IC,Walbro 255 ,HKS 272/278, Motec m800OEM)

    Inflammable means flammable? (Dr Nick Riviera,Simsons Season13)

  6. #6
    Join Date
    Sep 2013
    Location
    Athens,Greece
    Posts
    51

    Re: EXT4 fs beyond 16TB? (non root)

    Hello All and thank you for you answers,

    Official response was to upgrade my system to SP4 because current SP3 toolset does not support 64bit conversion of ext4.

    So i wonder if the so called release notes of their OS are for advertizing purposes only....

    I hope that i saved others from the same suffering...

    Cheers,

    Michael.
    Amiga 500 , Zx +2 owner
    Long live Dino Dini (Kick off 2 Creator)
    Mitsubishi Evo IX Rules! (HKS EVC-S ,HKS GTII KAI,HKS TBE,HKS suction kit ,HKS Type R IC,Walbro 255 ,HKS 272/278, Motec m800OEM)

    Inflammable means flammable? (Dr Nick Riviera,Simsons Season13)

  7. Re: EXT4 fs beyond 16TB? (non root)

    Hi Michael,

    from your response, I read that *converting to 64bit* Ext4 is not supported. Did you receive any information that *creating a new* 64bit Ext4 filesystem isn't supported either?

    Regards,
    J
    From the times when today's "old school" was "new school"

    If you find this post helpful and are logged into the web interface, show your appreciation and click on the star below...

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