brettm357 Posted November 11, 2014 Share Posted November 11, 2014 Help, My setup is WD Black 4TB Parity Disk 1 is WD Red 3TB Reiserfs Disk 2 is WD 1TB reiserfs - I have precleared a WD Red 4TB stopped array swapped 3TB with the 4TB it formatted as XFS and then did a parity sync - when finished I have no files on the 4TB Red - what have I done wrong Quote Link to comment
sureguy Posted November 11, 2014 Share Posted November 11, 2014 When you do a parity sync, the resulting disk should appear the same as the old one. Not sure what went wrong, but I'm pretty sure this isn't the correct way to switch disk formats . Quote Link to comment
mcdonagg Posted November 11, 2014 Share Posted November 11, 2014 I havent done this but I think what you should have done is a "rebuild" not a sync, but your data should still be on the 3TB drive you removed so you should be able to put that back in and do a sync then do the swap and do a rebuild. Quote Link to comment
WeeboTech Posted November 11, 2014 Share Posted November 11, 2014 A rebuild would have rebuilt the missing/replaced drive with reiserfs on the new drive. I'm not sure if placing a formatted drive in that position and doing a parity sync was appropriate. Usually you have to shutdown. Remove / disconnect the drive. reboot let unraid see the missing drive stop shutdown put the new drive in (precleared ONLY. No high level format). boot and let parity rebuild it on the newer drive (it will have the old format and expand it to the size of the drive). As suggested, if you have the old drive, you can connect it and manually mount it. Then rsync the old drive onto the new parity protected drive. Quote Link to comment
brettm357 Posted November 11, 2014 Author Share Posted November 11, 2014 Ok tried adding 3TB back into original slot gave me an error that I cannot put smaller drive in to replace 4TB Quote Link to comment
WeeboTech Posted November 11, 2014 Share Posted November 11, 2014 Do manually outside the array possibly with snap if you need further assistance. Then rsync the data manually. Quote Link to comment
brettm357 Posted November 11, 2014 Author Share Posted November 11, 2014 snap plugin I think I can figure out but rsync is there a link on how to install and set it up - this sounds like its getting past my technical knowledge Quote Link to comment
WeeboTech Posted November 11, 2014 Share Posted November 11, 2014 you can try and use midnight commander which is part of unRAID. rsync is part of unraid and pretty easy, it's like an advanced copy command Look on the forum and google it. The exact syntax escapes me at the moment, but it would look like rsync -avPX /mnt/diskx/ /mnt/disky Quote Link to comment
itimpi Posted November 11, 2014 Share Posted November 11, 2014 It was not clearly stated in any of the earlier messages, but you cannot change the format of a disk and expect any data on the disk to survive the change. Therefore when you changed the format of the new 4TB drive to XFS that would have the effect of wiping any data on it. Since you still have the 3TB drive which will still have ots data on it then the easiest thing to do would be to mount it outside the array (assuming you have a way of plugging it in (spare SATA slot or a SATA/USB adapter and copying the files onto the new 4TB drive. Quote Link to comment
brettm357 Posted November 11, 2014 Author Share Posted November 11, 2014 Ok installed snap mounted drive and are currently transferring files using midnight commander thankyou everyone for your help Quote Link to comment
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