February 22, 201511 yr I've had an interesting weekend.. not one I want to repeat anytime soon. Long Story short, I had a drive failure which lead me to replace, which I ended up screwing up my disk1 (was able to recover the most important stuff). During my journey, I was able to bring the new replacement disk1 online, parity rebuild and an optimal array. So on to recovering more data from the failed "Old Drive1". I added to the unraid box and used SNAP to mount the disk. I performed an rsync which ended up hitting the failed drives main issue (read errors). These read errors caused all the drives on the same SAS/SATA breakout cable to go into an offline situation and my new disk1 went into a disabled state.. The new disk1 is fine, I've done all the scans and it's good. I had to reboot to get the disks to show back up, of course disk1 was in the disabled state. Given that I didn't really care about the data on disk1 at this point, I did the trust my array procedure and brought everything back online fine, parity check, all good. So, foolishly, I did the rsync again and it did the same darn thing again. Disk1,disk2,disk3 and the olddisk1 are on the same sas breakout cable on a supermicro SAS/SATA 8port. I've since removed the olddata1 drive and brought everything back online and will attempt further data recovery on a separate box and move the data over from a known good drive. Has anyone seen the behavior? Very odd that it causes the controller to whack out. Thanks, Mike
February 22, 201511 yr Community Expert I've certainly seen frequent occurrences of the case where a drive acting up can take out the controller (and a reboot is required to recover). I think in the end I decided it was a badly seated controller card (or a bad SAS cable).
February 22, 201511 yr Author that was my thoughts too, I replaced the SAS breakout cable and reseated and it happened after that. I've ordered a replacement controller just in case it happens again. very odd, but this morning, parity check/correct complete and my array is stable once again... Whew!
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