Are there any real advantages of ext4 over ext2 ?
dpchrist at holgerdanske.com
Wed Jul 8 23:14:16 UTC 2020
On 2020-07-08 11:10, Manish Jain wrote:
> I have a dual boot computer with FreeBSD and Linux.
> My Linux partitions are ext4 simply because ext4 is now the default
> under Linux. However, ext4 is not supported directly by FreeBSD. As a
> result, writing to those filesystems from FreeBSD is painfully slow (via
> It is notable that ext2fs is directly supported by FreeBSD.
> ext4 supports huge files (in terra bytes) and filesystems (in thousands
> of peta bytes). But very few people have such files/filesystems. At
> least, don't - my use case is max 64 GB file, max 500 GB filesystem.
> So I wonder are there any real advantages of ext4 over ext2 ?
> Thanks for any inputs,
> Manish Jain
If you want to get inside your Linux root filesystem from FreeBSD on a
dual-boot system, your choices would appear to be FUSE, or reinstalling
Linux and manually partitioning with ext2.
I recently learned that FreeBSD supports ext2 and have formatted a USB
HDD with ext2 for this reason, but have yet to test it with FreeBSD.
OpenZFS is available and works on both platforms. But, I have not tried
moving ZFS devices between platforms. I expect the crux would be
limiting the feature flags to the common subset.
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