So you would expect a kernel panic when a live drive gets pulled from a RAID5?
Sent from my iPhone > On Jan 20, 2021, at 7:12 AM, Stuart Henderson <s...@spacehopper.org> wrote: > > 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. > >
