Fedora Btrfs Activity Continues - New Options To Control Discard, Compression

[starshipeleven]

Where are you seeing that they are only using it for webservers?

They do use it for a lot more than that

https://lwn.net/Articles/824855/

more non-critical stuff (in the sense that reloading a backup or offloading to the next one still alive is instantaneous), containers, build bots and developer VM workstations.

While to store data, like user message cache when the user is offline they are using XFS

[RahulSundaram]

Yeah, my point was just that knowing that they are using btrfs for something that is slightly more important than a swarm of webservers behind a load balancer would actually mean something.

Where are you seeing that they are only using it for webservers?

They do use it for a lot more than that

https://lwn.net/Articles/824855/

[starshipeleven]

some database servers work with raw partitions, they don't need filesystem help

Yeah, my point was just that knowing that they are using btrfs for something that is slightly more important than a swarm of webservers behind a load balancer would actually mean something.

[pal666]

I have yet to hear that they started using btrfs for their backend servers and database servers.

some database servers work with raw partitions, they don't need filesystem help

[pal666]

Funny how the proponents always give Facebook's server use as arguments for Btrfs on Fedora desktops but when someone mentions Strates they say "That's for Fedora Server. You can't compare desktop and server"....

funny how you are arguing with imaginary opponents. stratis is a kludge for companies who lost all their btrfs devs

[pal666]

Compression can not be set per subvolume, so it's strange that they mention that you can set the compression level per subvolume

compression can even be set per file, so it's strange that you mention that you can't set it per subvolume

[starshipeleven]

"Facebook has been using it in production for > 6 months, it's solved many problems with no regressions."

Funny how the proponents always give Facebook's server use as arguments for Btrfs on Fedora desktops but when someone mentions Strates they say "That's for Fedora Server. You can't compare desktop and server"....

To be fair, Facebook servers where btrfs is employed are more similar to desktop than real servers.
It's a bunch of webservers, which is the rank-and-file simplest and disposable kind of server for them.

I have yet to hear that they started using btrfs for their backend servers and database servers.

[herman]

Well, the one good thing about this move is Fedora devs are going to settle once and for all whether btrfs is usable on a workstation or not.

[Ropid]

Compression can not be set per subvolume, so it's strange that they mention that you can set the compression level per subvolume

You can change the compression method with the "btrfs property" command. The command works on directories and files, and also on sub-volumes. Here's an example:

[COLOR=#333333]$ btrfs sub create test[/COLOR]
[COLOR=#333333]Create subvolume './test'[/COLOR]

[COLOR=#333333]$ btrfs property get test compression[/COLOR]

[COLOR=#333333]$ btrfs property set test compression zlib[/COLOR]

[COLOR=#333333]$ btrfs property get test compression[/COLOR]
[COLOR=#333333]compression=zlib[/COLOR]

[COLOR=#333333]$ seq 1 100000 > test/testfile[/COLOR]

[COLOR=#333333]$ sudo compsize test/testfile[/COLOR]
[COLOR=#333333]Type Perc Disk Usage Uncompressed Referenced [/COLOR]
[COLOR=#333333]TOTAL 37% 216K 576K 576K [/COLOR]
[COLOR=#333333]zlib 37% 216K 576K 576K [/COLOR]

[Awesomeness]

"Facebook has been using it in production for > 6 months, it's solved many problems with no regressions."

Funny how the proponents always give Facebook's server use as arguments for Btrfs on Fedora desktops but when someone mentions Strates they say "That's for Fedora Server. You can't compare desktop and server"....