What filesystem do you use? And why?
 

I've always used ext, moving up from ext2 to ext3 to ext4 as distros did. But I know that many people use other systems. I'd be interested to know why and what advantages they have

ext4 for "run-of-the-mill" - especially [br]oot.
btrfs for snapshot, native RAID, error correction on read, no licensing issues ...

Ext4. It works. I see no need to change.

I was used to reiserfs v.3 (used reiserfsck --rebuild-tree once to recover deleted files by accident, with success for the most part), good performances on the / partition, recently switched to ext4 (upgraded drive to a SSD) and so far so good, no complain. For partition with larger files (movies files etc) I use XFS

Ditto, likewise and same here.

I still use ext2 when I install a separate /boot partition, and for interchange partition with FreeBSD.

I tried JFS on my system partition, and when I had problems I couldn't mount the JFS partition writable by any means from Knoppix or UBCD/GParted. But I couldn't even mount it readable from everywhere.

I will stick with ext4.

EXT4, well suppported, stable, and I know if I have major issues, any live environment I have on hand will support it.

I use what the distro defaults to usually.

My first SSD got me searching and since I started using BtrFS haven't stopped...http://www.howtogeek.com/howto/33552...ld-you-choose/

also, like adding "real time priority".

That article was published in 2010. It's now 2016 and a quick perusal of the Technical section of https://en.wikipedia.org/wiki/Compar..._distributions, listing the default filesystems used by various distros, shows that btrfs hasn't quite taken off as expected...

There is a *lot* of development effort going into ext4 at the moment - far more than would be expected for a filesystem "on the way out".

I do not believe EXT4 is on the way out. It has performance characteristics for the common cases that are impressive, and for edge cases outperforms everything else on spinning rust. SSD I have not tested.

I use EXT2, and EXT4 on most linux partitions, some BTRFS where speed is not as important, XFS on rare occasion where it fits, and JFS/JFS2 for AIX. I tried Reiser (both) and was not impressed. XFS is slow for encrypted data volumes under load, more than 94% slower than EXT4. I have used many others, but in the last decade things have really settled down and the choices are all nice.

I am looking forward to BTRFS maturing, as it SHOULD blow away several other options for certain cases eventually. It is not quite there yet.

[QUOTE=hydrurga;5562749]https://wiki.archlinux.org/index.php/file_systems
https://en.wikipedia.org/wiki/Compar...f_file_systems :D

:-) Partial quoting, bane of my existence.

I'm not quite sure what your argument is, but the full quote on that page is as follows:

So, nothing to do with the discussion in hand then... ;-)

(Tho better ;) here than many places;) I fear "opinions" may run rampant so more: ... :Dhttp://www.virtualtothecore.com/en/2...xt-filesystem/

Google is driving the ext4 devel - even hired Ted. I was at a conference in 2007/8 timeframe when btrfs was just being considered by the public.
Ted in one of his presentations stated he saw btrfs as the next wave (my words). I've use it ever since. These days I have my photos on RAID5 - probably my most valuable data.