rcrh Posted January 9, 2020 Share Posted January 9, 2020 I'm just finishing up the process of migrating my drives from ReiserFX to xFS. I've shuffled data around and slowly reformatted each drive. As I final step I assumed I'd have to reformat my parity drive and rebuild it. However, when I stopped the array and clicked on the drive tab for my parity drive I couldn't find an option for selecting the format of the drive. Did my parity drive automatically move to xFS when I moved from unraid 5.x to 6.x or am I not looking in the right place. Thanks in advance. Quote Link to comment
BRiT Posted January 9, 2020 Share Posted January 9, 2020 Parity never has a filesystem format. 1 Quote Link to comment
S80_UK Posted January 9, 2020 Share Posted January 9, 2020 Specifically, the contents of the parity drive are the results of a calculation based on the contents of the data drives. Everytime data is changed on a data drive, the parity drive is also immediately updated to include the effect of the new data on that calculation. So when you changed the format on the other drives, the parity drive's contents were already adjusted accordingly. In the event that Unraid needs to recover a drive after a failure, a similar calculation using the parity contents and all the other data drives allows the missing data to be recalculated, regardless of the format that was in use on the failed drive at the time. If you have trhe time, this is a good read... https://wiki.unraid.net/Parity Quote Link to comment
rcrh Posted January 9, 2020 Author Share Posted January 9, 2020 8 hours ago, S80_UK said: Specifically, ... If you have trhe time, this is a good read... https://wiki.unraid.net/Parity I knew "what" the parity drive does but I didn't realize it did this without having an underlying format to the drive. Honestly I hadn't thought it through this deeply. Thanks for the link. Quote Link to comment
S80_UK Posted January 10, 2020 Share Posted January 10, 2020 You're welcome. As for thinking it through deeply or not... One beauty of Unraid is that you don't have to. Another is that for guys like me, I can do exactly that. Quote Link to comment
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