Am 21.02.24 um 16:48 schrieb Theodore Ts'o:
On Wed, Feb 21, 2024 at 12:39:54PM +0100, Reindl Harald wrote:
you shouldn't create filesystems with a on-disk format that don't support
64bit timestamps no matter how small the filesystem is
the arguments on this list where "such a small filesystem isn't expected to
be still used in 2038" which is nonsense in case of a /boot FS in a virtual
machine
our whole servers already survived 16 years and 30 dist-upgrades
This is an individual system administrator's decision. The defaults
will not create file systems with 128 byte inodes.
it was *not* my decision in 2019 after create a small /boot partition to
get a welcome message at boot that it will not survive 2038
However, there are situations where it *does* make sense to use ext4
file systems that can not express timestamps past 2038. For example,
at my employer, 128 byte inodes on HDD's because we do *not* preserve
file system images across hardware upgrades.
*this* should be an individual decision instead create outdated nonsense
these days
Using 128 byte inodes
means that there are 32 inodes per 4k inode table block, as opposed to
only 16 inodes if you are using a 256 byte inode. There are
performance benefits if you are concerned about reducing the 99.99%
latency on heavily loaded disks, and reducing the TCO costs for bytes
and IOPS for my employer's cluster file system.
irrelevant on a very small partition
Furthermore, from an ecological perspective in terms of power and
cooling perspective, even *if* hard drives would survive for over 8-10
years, it would be irresponsible to keep those systems in service. So
my employer knows what it is doing when it uses explicit mke2fs
options and/or mke2fs.conf settings to create file systems with 128
byte inodes.
in my world drives don't matter and the systems are moved between
hardware because hardware don't matter at all
what exactly is irresponsible in keeping a up-to-date system in service
which was originally installed 10 or 15 years ago? this isn't microsoft
windows and i haven't installed any Linux from scratch in my whole lifetime
in fact i created a small partition without touching mke2fs.conf and it
ended with a filesystem not surviving past 2038
Fedora for sure didn't invent the nonsense in "mke2fs.conf" falling back
to such pervert settings for very small martitions
