Hi all, I currently manage an IOT fleet based on Intel NUCs running Ubuntu 18.04 Server on SSDs with etx4, no swap. The device usage is more CPU bound than I/O bound and we are having some issues keeping a subset of devices running due to them being hard powered off in the field in some regions (sometimes as frequently as every 12hrs). Due to current difficulties in getting devices back from the field I'm looking into tweaking them as best as possible to survive these hard power off barring any physical SSD issues. Currently I have tried tweaking some ext4 and I/O settings with the following: * kernel options: elevator=noop fsck.mode=force fsck.repair=yes * fstab ext4 specific mount options: commit=1,max_batch_time=0 Are there any other configuration settings or changes to the above that would make sense to try here for this use case? I am hoping to at least make the fsck repair the last line of defence so it doesnt get stuck waiting for a prompt to repair it at boot, but want to try to change the I/O / ext4 behavior if possible so its writing as frequently as sanely possible to try to reduce the frequency where fsck is actually needed. Thanks,
