Hello!
What do you think about union mounting and UnionFS in particular?
Regards,
I. Rubel
> On 19. Apr 2019, at 07:20, Daniel Cegiełka <daniel.cegielka_AT_gmail.com> wrote:
>
> Hi,
>
> I know that most people on this list use ext4 - Michael's oasis,
> sta.li etc. We simply take ext4 and do not consider other options. I
> don't want to start discussing which file system is the best and the
> fastest, because it depends on the destination. I'm interested in
> which file system sucks the least (in my opinion).
>
> I reject at the start: reiserfs and reiser4 - The first is intended
> mainly for many small files (scalability). The second uses plugins,
> which makes static linking difficult.
>
> * ext4
> This is a very rational choice. Unfortunately, ext4 is three
> filesystems packed into one (ext4 can also support ext2 and ext3). If
> someone has looked in the source code e2fsprogs will know what I mean.
>
> * XFS
> A great file system if we are NASA and we are interested in HPC. XFS
> is designed for large and fast servers, meaning it is
> resource-consuming.
>
> * ZFS
> Resource-consuming. Designed for large servers.
>
> * btrfs
> Rather a good choice for server rooms (Facebook).
>
> * bcachefs
> A good competition for btrfs/ZFS.
>
> * JFS [1]
> Forgotten file system. JFS is what ext4 should be. This is a very well
> thought and well-designed file system. It is very light and has a tiny
> resource consumption. The first journaling file system plus unicode
> support. Here is a small comparison of the kernel modules (size):
>
> # ls -lh `find kernel/fs/ -name jfs.ko -o -name ext4.ko -o -name
> xfs.ko -o -name btrfs.ko`
> -rw-r--r-- 1 root root 2.1M Mar 4 12:49 kernel/fs/btrfs/btrfs.ko
> -rw-r--r-- 1 root root 1.2M Mar 4 12:49 kernel/fs/ext4/ext4.ko
> -rw-r--r-- 1 root root 342.6K Mar 4 12:49 kernel/fs/jfs/jfs.ko
> -rw-r--r-- 1 root root 2.3M Mar 4 12:49 kernel/fs/xfs/xfs.ko
>
> Of course, JFS has disadvantages:
> * no support for fallocate - the implementation of this in the Linux
> kernel should not be difficult
> * DAX [2] support has not been implemented (yet)
> * JFS is only able to use 4k blocks (but DAX works only with 4k)
> * no support in extlinux (lilo, grub/grub2 works fine)
>
> Would anyone be interested to start supporting JFS? I'm thinking about
> rewriting jfsutils.
>
> Best regards,
> Daniel
>
> [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/filesystems/jfs.txt?h=v5.1-rc5
> [2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/filesystems/dax.txt?h=v5.1-rc5
>
Received on Sun Apr 21 2019 - 10:46:48 CEST