On 2021-01-19, Jordan Geoghegan <jor...@geoghegan.ca> wrote: > > On 1/18/21 2:47 PM, Eric Zylstra wrote: >> I’ve set up a 6 drive RAID-5. Just for the experience of degrading >> and rebuilding the RAID, I popped a drive out. Within a few seconds the >> machine kerneled and dropped into ddb. Is there any chance this would be >> expected considering the machine’s SATA is not hot-swappable? >> >> I’m looking into setting up a serial connection so I can capture the >> debut output (I already have photos of the traces for all 8 CPU, but >> would like to give serial output instead). I would not file a report if >> this behavior falls into “not great, but expected”.
Assume this is softraid rather than one of the supported hardware RAID options which usually work ok with hotswap most of the time. > Just thought I'd chip in here too FWIW: > > I've never successfully hot swapped a drive with OpenBSD before. > I have hardware that does it fine on Linux, but fails on OpenBSD. I > haven't caused the kernel to panic when pulling a drive, but the OS > fails to detect any newly attached SATA or SAS drives. It's certainly > caused some frustration when trying to rebuild a RAID array on a > production machine. Maybe I just have wonky hardware, but I've tried > this on a number of releases, on several different pieces of hardware, > on several different arches. I have no solution to offer, just thought > I'd share my experience with hot swapping drives on OpenBSD. Even if you do have a proper hotswappable drive chassis or external SCSI or whatever, there's no way to rescan drives on OpenBSD.
