January 12, 201313 yr Last weekend I ran a parity check, upgraded from 4.7 Pro to 5.0rc8a and everything seemed fine. I ran parity again, everything looked good. This morning, I sit down to upgrade my parity drive to a precleared 3TB I have at the ready but happened to notice disk 2, while still green, is showing 256 errors. I have never seen errors from my drive before. Coincidence that it happened pretty much right after the upgrade? Dunno. Stranger still, perhaps, the fact that parity (last checked on Jan 9th) found no errors. I'm a little unsure of how to proceed now I guess. I've attached my syslog. syslog-5rc8a-d2-errors.txt
January 12, 201313 yr You start by getting a SMART report for disk2. Read errors on a given disk have nothing (directly) to do with parity check errors. Joe L.
January 13, 201313 yr Author So it passed the overall health self-assessment but attached is the rest of the report. smart.txt
January 13, 201313 yr You have two un-readablse sectors pending possible re-allocation. 197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 2 The drive is perfectly healthy, but you should re-construct it to fix those sectors. Stop array un-assign disk2 Start array with it un-assigned Stop array once more re-assign disk2 Start array to allow it to re-construct disk2 onto itself. You will be without parity protection from the time you un-assign the disk to the time it finishes re-constructing itself. If you have precious or critical data on ANY disk, make a backup BEFORE doing anything. Joe L.
January 13, 201313 yr Author Thanks Joe. Since that 2TB drive is nearly full (144GB left) it's going to take some time to make a copy of everything on there but I will definitely play the cautious card as that's where my photos and such live. This is going to be one slow process (upgrading to 5.0, getting plugins installed & working & upgrading drives to 3TB & shuffling their order but I'll take it all with baby steps. This drive certainly needs my attention before moving onward.
January 13, 201313 yr Thanks Joe. Since that 2TB drive is nearly full (144GB left) it's going to take some time to make a copy of everything on there but I will definitely play the cautious card as that's where my photos and such live. This is going to be one slow process (upgrading to 5.0, getting plugins installed & working & upgrading drives to 3TB & shuffling their order but I'll take it all with baby steps. This drive certainly needs my attention before moving onward. Making a copy of precious data is a very good first step... See here: http://www.overclock.net/t/1254683/why-raid-is-not-a-backup-solution Joe L.
January 13, 201313 yr Author Absolutely. Actually part of the reason I'm doing all of this is to better my backup strategies. I needed 5.0 to get CrashPlan installed since I bought their CrashPlan Central family plan Black Friday - and I needed more room locally for family to back up to. Now I just have this finicky drive slowing down my headway a bit, but will take it in stride.
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