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They have problems being chucked out of pools when resilvering, ie. when added to the pool, so the general usage pattern isn't so much the issue as is the way t
by ubercow13 7y ago
They have problems being chucked out of pools when resilvering, ie. when added to the pool, so the general usage pattern isn't so much the issue as is the way the filesystem or RAID controller reacts to them. In particular I think people have had problems with ZFS because the resilvering process involves a lot of random writes, and once the PMR cache on the drive is full, it will stop responding as it flushes the cache for long enough for ZFS to think it's dead.
- LeifCarrotson 7y agoSo we could make the build process pause until the drive resumed responding, or have the ZFS/whatever filesystem drivers recognize the difference between a dead drive and an SMR drive that's working on its cache? I'd want the drive statistics or benchmarks to include a complete rebuild process, though.
- ubercow13 7y agoYeah, it does seem like maybe there could be improvements on the filesystem/RAID software side to better support these drives. If only they were labelled properly as SMR so that the filesystem devs could buy one to test with.