March 29, 20188 yr Almost 40 hours into a parity check with a 17% completion. Is there something I can post to get an answer on the reason this is so slow? Is it drive sdc that's the issue?
March 29, 20188 yr reiserfs? Where's Disk 5, 8, 10, 18? But, yes, looks like Disk 7 is having a bit of a wobbler.
March 29, 20188 yr Author Diagnostics attached. Unbelievably I have lost Disk 5, 8, 10, 18 due to failure. I have saved a good portion through dd to ud devices. I intend to read new drives to these slots after parity complete. But I may be in a retirement home when that happens. tower-diagnostics-20180329-1339.zip
March 29, 20188 yr Community Expert There's no point, parity would be mostly corrupt, you should remove that disk and re-sync parity without it, then try and salvage some data from it if necessary. P.S. disk3 is also on the list of failing disks, and will likely also have read errors during a sync.
March 29, 20188 yr 1 minute ago, thefly said: Thats 7 bad disks in the period of 2 weeks. How is this possible? Physical or electrical trauma, age, bad luck... All hard drives eventually fail, the trick is accurate prediction. Backup, backup, backup. Hard drive failure should be expected and planned for.
March 29, 20188 yr How long have the disks worked ok in your machine? If a long time and then many starts to die in a short interval, then I would consider temperature or PSU. If you have quite recently built the machine using recycled drives, then I would guess that you started with bad drives that had already given their best. Another thing is that all drives aren't equally good at handling vibrations - and your machine has quite a lot of drives that will produce vibrations both when spinning and when performing seek operations. The tolerances required when aligning the heads are minute, which is why enterprise-level disks needs to measure vibrations so they can quick-terminate writes if they see too much vibrations.
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