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New Linux Patch To Allow Booting From Arbitrary Non-Block Device File-Systems

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  • New Linux Patch To Allow Booting From Arbitrary Non-Block Device File-Systems

    Phoronix: New Linux Patch To Allow Booting From Arbitrary Non-Block Device File-Systems

    The Linux kernel currently has code to allow booting an initial root file-system via NFS or CIFS for non-blockdevice file-systems while a new patch aims to allow for mounting of arbitrary non-block device file-systems as root...

    https://www.phoronix.com/scan.php?pa...D-File-Systems

  • #2
    it would be interesting if this includes also fuse based file systems (like having fuse and the mount command for that fs in initrd and then just mount that as /)

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    • #3
      Does this mean that any folder from any filesystem will be usable in the same way as booting on btrfs subvolumes ?

      That's good!

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      • #4
        I don't think it adds anything new for FUSE. That needs a userspace binary, which generally means an initramfs, and they can already chroot into FUSE-based filesystems.

        I doubt it means you can just boot into a folder either. You'd still need to mount the filesystem that folder belongs to.

        It probably only makes sense when combined with network-based filesystems. VirtIO-FS technically isn't one but it's similar.

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        • #5
          What's the point? These things are normally done via initramfs anyway.

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          • #6
            Originally posted by intelfx View Post
            What's the point? These things are normally done via initramfs anyway.
            I agree. However I have to point out that sometime writing few lines of kernel code is simpler than build an initramfs image. I am not suggesting to do that, but depending by the skill of the person hacking the kernel is more "programmer friendly" than a updating a bash script which builds the initramfs image.

            Finally I bet 2ยข that the kernel patch is smaller than any other initramfs patch....

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            • #7
              Am I correct that this is stage 2 of a PXE boot but with out the DHCP server?

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