Post #2148816

2026-05-07 10:16 UTC

You miiight be able to recover the array if you’re lucky I don’t see how this would apply. Having the disks connected externally is the same as having them connected internally, maybe over a different bus/protocol, but the principle is the same. No RAID solution I know of would lose the array on a power outage (AFAIK). the problem is the target not being able to manage its own interrupt Honestly I don’t see how interrupt handling would be any different between internally or externally connected devives, except for different buses/protocols handling it differently intrinsicly. Are you absolutely sure this is a thing or are you just speculating? you have two different states Maybe I’m too spolied by using ZFS, but again I don’t think this would actually be a problem. But AFAICT you don’t even need a CoW filesystem for that to be not a problem. Every journaling filesystem (e.g. ext4) would solve this by dismissing the newest non-consistent data and restore a working state. I mean, there are 60-bay 19" expansion units for enterprise storage systems. I doubt these would be a thing if having the drives connected externally was a problem.

Replies (1)

@just_another_person@lemmy.world 2026-05-07 14:39

Having the disks connected externally is the same as having them connected internally No, it 1000% is not, especially in the case of USB that I used. Even in the way Linux handles everything as a file and target, it is vastly different. No RAID solution I know of would lose the array on a power outage Hardware RAID enclosures have batteries on the disk controllers for this very reason. We aren’t talking about those though, we’re talking about software RAID on JBOD, which wouldn’t have those sanity protections. Here’s some random blog explaining deeper. Honestly I don’t see how interrupt handling would be any different between internally or externally connected devives, except for different buses/protocols handling it differently intrinsicly See above Maybe I’m too spolied by using ZFS, but again I don’t think this would actually be a problem That’s a filesystem solution to a hardware problem, so yes, probably a bit spoiled there, or at least it’s skewing your understanding of what RAID is and how it works. One of the reasons ZFS exists, actually. It’s nice to have nice things though.

Open ##2161991