The noatime option has already been requested, it is a good one, but in addition, I would like to be able to set attribute +C on a new share at creation time.
I am running into the issue of extents building up on a file due to it being constantly accessed, and performance degrading greatly.
Request 1:
Make a checkbox option at share creation time (btrfs sub) that sets the attribute C on a newly created sub. Warn the user of the affects it has around snapshots/recovery (around CoW), but also recommend it be used with files that are accessed often, such as VM images. Allow a user to turn it on any time, but warn them that turning it on will not affect any files already existing in the share (sub). At this point, a user would have to copy the file to a new name, delete the original, and rename it for it to pick up the new attribute.
Request 2:
Do NOT turn on snapshots/continuous backup by default for new shares (subs). This is also a big performance problem on filesystems that change often. Compounded with fragmented files, this simply kills IO on the system.
Request 3:
Offer the ability to run btrfs filesystem defrag as a maintenance option. It has to be specified what files or scripted to be recursive for all files in a share (sub). This reduces the extents down to something more sane, and when combined with the 2 above, should improve performance on shares with lots of file access.
Re: Please make additional btrfs options available
Hello xsnrg your feature requests have been moved to the development for evaluation,I will update this topic if I get the response of them,thank you so much!
