I think I know why was the server misbehaving. One of boot SSDs is failing.
SMART overall-health self-assessment test result: FAILED!
Drive failure expected in less than 24 hours. SAVE ALL DATA.
No failed Attributes found.
If you are booting from a Linux RAID1 array, can you just power it off, replace the drive and it boots up and starts rebuilding?
@matrix in theory it should, it just depends on implementation
giving it a try should be fine as long as you have atomic writes
giving it a try should be fine as long as you have atomic writes
@matrix worst case you lose a few writes but if it's critical writes they will be attempted multiple times usually
@matrix if it is software raid, yes
