danbst 8d8a7210e4 zramSwap: allow configure compression algorithm + cleanups ... - add `zramSwap.algorithm` option, which allows to change compressor declaratively. zstd as default - add `zramSwap.swapDevices` option, which allows to define how many zram devices will be used as swap. Rest devices can be managed freely - simpler floating calculations - fix udev race condition - some documentation changes - replaced `/sys/block/zram*` handling with `zramctl`, because I had occasional "Device is busy" error (looks like zram has to be configured in predefined order) - added `memoryPercent` and `algorithm` as restart triggers. I think, it was a bug that changing `memoryPercent` in configuration wasn't applied immediately. - removed a bind to .swap device. While it looks natural (when swap device goes off, so should zram device), it wasn't implemented properly. This caused problems with swapon/swapoff: ``` $ cat /proc/swaps Filename Type Size Used Priority /dev/zram0 partition 8166024 0 -2 /var/swapfile file 5119996 5120 1 $ sudo swapoff -a $ sudo swapon -a swapon: /dev/zram0: read swap header failed $ cat /proc/swaps Filename Type Size Used Priority /var/swapfile file 5119996 0 1 ```		2019-01-17 15:58:53 +02:00
..
release-notes.xml	release-notes: Adds 19.03 — Koi	2018-09-02 17:47:24 -04:00
rl-1310.xml	nixos docs: format =)	2018-05-01 19:57:09 -04:00
rl-1404.xml	nixos docs: format =)	2018-05-01 19:57:09 -04:00
rl-1412.xml	treewide: Fix broken Gmane URLs	2018-12-25 22:34:55 -05:00
rl-1509.xml	docs: format	2018-09-29 20:51:11 -04:00
rl-1603.xml	nixos docs: format =)	2018-05-01 19:57:09 -04:00
rl-1609.xml	nixos docs: format =)	2018-05-01 19:57:09 -04:00
rl-1703.xml	nixos docs: format =)	2018-05-01 19:57:09 -04:00
rl-1709.xml	nixos docs: format =)	2018-05-01 19:57:09 -04:00
rl-1803.xml	nixos docs: format =)	2018-05-01 19:57:09 -04:00
rl-1809.xml	nixos/release-notes for 18.09: fix missing entry	2018-10-30 08:41:13 +01:00
rl-1903.xml	zramSwap: allow configure compression algorithm + cleanups	2019-01-17 15:58:53 +02:00