Hi! I just noticed that sysfs settings now seem to get lost after a suspend/resume cycle. In my case it's queue/read_ahead_kb, which I configure with a udev rule. This has been working fine for years. We start out with: $cat /sys/block/nvme0n1/queue/read_ahead_kb 128 Set a different value: $echo 256 > /sys/block/nvme0n1/queue/read_ahead_kb $cat /sys/block/nvme0n1/queue/read_ahead_kb 256 <suspend & resume> Check again: $cat /sys/block/nvme0n1/queue/read_ahead_kb 128 I'm reasonably sure it used to retain the configured value. The same also happens with sd (SATA) devices on a different machine, so it seems to be a generic problem with either block or sysfs. This is with 6.14.3-rc2. I have unfortunately no idea when this started to happen - i only noticed it now. Will trawl through git history but wanted to see if this rings a bell with someone. thanks, Holger
