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Forum Discussion
BTRFS scrub speed is insanely slow.
So I have a RN104, with about 10TB of disk space. When I set it to do a BTRFS scrub, the speed is horrific. I'm getting something like 30GB/hour of scrub speed. At the present rate, it would take ...
joey123 wrote:
I'm suspecting that some part of this resolution (or associated workd) made the scrub logic really, really not play nicely with the RAID acceleration hardware that these systems have.
That suggests that all RN104 users would be seeing this. That is possible, but would be news to me.
Though I suspect you've already gotten past this - is there anything in the smart stats that suggests a growing disk problem?
I checked what I could find here, and it came up clean. Do you know a good way to check the SMART status of the disks? I guess it's possible that I missed something.
Also, regarding other RN104 users seeing this. Remember that the unit comes with no scheduled scrubs set up out of the box, and it's an old model that hasn't been made for a while. If it required (for instance) mismatched disk sizes in X-RAID5, it's plausible that very few people would have noticed. I'm suspecting that the sorts of power users who would (for instance) frequent this message board are almost exclusively focused on the higher end models.
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