tzotz Posted March 29, 2023 Share Posted March 29, 2023 (edited) Hi unRaid community, I must have done something wrong here but I can't figure what it is/was - I was careful to not override data disks. Step 1 - Replace Parity with a 4TB disk and resynched Step 2 - I replaced disk 3 with the old parity drive and got "too many wrong or missing disks" now disk 2 shows and error and disk 3 remembers the old 1 TB that was removed and replaced. replaced disk 3 with the old 1 TB and the array started fine. I'm on unRaid 6.11.5 What gives? Appreciate all the help I can get, also if more info is required do let me know. Best, tzotz Edited March 29, 2023 by tzotz Quote Link to comment
Solution JorgeB Posted March 29, 2023 Solution Share Posted March 29, 2023 Parity is not valid, and you can't replace parity and a data disk at the same time. Quote Link to comment
itimpi Posted March 29, 2023 Share Posted March 29, 2023 The screenshot shows parity was not rebuilt after replacing it. Quote Link to comment
tzotz Posted March 29, 2023 Author Share Posted March 29, 2023 Hi' itimp, thank you for this prompt response - Parity was synched for 13 hours - why all that time if it wasn't rebuilt. Anyway - Do I have to return the 1TB that I meant to replace and rebuild parity? - please tell me how so I won't make a mistake here. Thanks. Quote Link to comment
tzotz Posted March 29, 2023 Author Share Posted March 29, 2023 HI Jorge, thanks for your response - I'm afraid I don't follow - first I replaced the parity and synched it judging by the array activity all the disks were read and the parity rewritten - and still not valid parity? thanks also why disk disk 2 in error when I didn't touch it? I only replaced disk 3? Quote Link to comment
tzotz Posted March 29, 2023 Author Share Posted March 29, 2023 The dashboard says: Isn't that enough? Quote Link to comment
JorgeB Posted March 29, 2023 Share Posted March 29, 2023 Parity shows a blue icon, that means it was not synced, posting the diagnostics might show something more. Quote Link to comment
tzotz Posted March 29, 2023 Author Share Posted March 29, 2023 I left the new parity which was synched and put back the 1Tb that was previously replaced. Start says "Start will start Parity-Sync and/or Data-Rebuild." If I click on start is there any risk to disks 1 thru 5? Is there a safe way to verify that parity is valid without any risk of data disks being ompromised? I honestly don't know how to go from here? Your help is greatly appreciated. Thanks Quote Link to comment
tzotz Posted March 29, 2023 Author Share Posted March 29, 2023 tower-diagnostics-20230329-1712.zip These diagnostics were taken with the original data disk and the new parity (after it was synched for 13 hours). Thanks guys for all your help. Quote Link to comment
JorgeB Posted March 29, 2023 Share Posted March 29, 2023 Diags are after a reboot, so not much to see, maybe you've posted the wrong ones? Quote Link to comment
tzotz Posted March 29, 2023 Author Share Posted March 29, 2023 When should diagnostics be run - I'll comply. Quote Link to comment
JorgeB Posted March 29, 2023 Share Posted March 29, 2023 After parity was synced like you mentioned, and before rebooting. Quote Link to comment
tzotz Posted March 30, 2023 Author Share Posted March 30, 2023 tower-diagnostics-20230330-2228.ziptower-diagnostics-20230330-2228.zip Hi JorgeB, The above zip is the diagnostics taken after parity sync. Parity is no longer orange in the drive display. Now, what to do in order to replace my 1 TB drive with the old 3TB parity and rebuild it. Do I have to prepare it in any way? Thanks, best, tzotz Quote Link to comment
JorgeB Posted March 31, 2023 Share Posted March 31, 2023 You just need to do a standard disk replacement. Quote Link to comment
tzotz Posted March 31, 2023 Author Share Posted March 31, 2023 Thanks JorgeB, Just to make sure, follow this procedure? Stop the array Unassign the old drive if still assigned (to unassign, set it to No Device) Power down Pull the old drive Install the new drive Power on Assign the new drive in the slot of the old drive Go to the Main -> Array Operation section Put a check in the Yes, I'm sure checkbox (next to the information indicating the drive will be rebuilt), and click the Start button The rebuild will begin, with hefty disk activity on all drives, lots of writes on the new drive and lots of reads on all other drives All of the contents of the old drive will be copied onto the new drive, making it an exact replacement, except possibly with more capacity than the old drive. Thanks again. Quote Link to comment
JorgeB Posted March 31, 2023 Share Posted March 31, 2023 9 minutes ago, tzotz said: Power down Pull the old drive Install the new drive Power on You can skip these if both drives are connected. Quote Link to comment
tzotz Posted March 31, 2023 Author Share Posted March 31, 2023 Thanks, but no, I only have one slot where the old drive is currently connected. Will report outcome of the procedure. Thanks again, tzotz Quote Link to comment
tzotz Posted March 31, 2023 Author Share Posted March 31, 2023 Hi, done, array is in operation again. Thanks for all your help. Best, tzotz 1 Quote Link to comment
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