sid

The formatting status on the disk went away once diagnostics was generated 😕

It adds instantly to the array but then it says that the disk needs to be formatted. thevault-diagnostics-20240705-1801.zip

Hi @JorgeB, Thanks, that seems to have worked. I am able to preclear those disks now. However, even after preclearing them, when I add the disk to the array, it still takes hours (15+) to then format the precleared disk. I thought the whole idea of preclearing was that once preclear is done (which itself takes 12+ hours) adding them to the array should be fast ? Or is my understanding wrong and preclearing the disk simply avoids the need for a parity rebuild ? I don't suppose I should format a precleared disk separately before adding it to the array ? Thanks

thevault-diagnostics-20240701-2215.zip

Hi, I'm looking to add a couple of used disks to my array. While trying to preclear the disk, `preread` seems to fail. dd process hung at 0, killing ... Pre-read: pre-read verification started 3 of 5 retries... Pre-Read: dd output: 0 bytes copied, 501.851 s, 0.0 kB/s Pre-Read: dd output: dd: error reading '/dev/sdb': Input/output error Pre-Read: dd output: 0+0 records in Pre-Read: dd output: 0+0 records out Pre-Read: dd output: 0 bytes copied, 501.853 s, 0.0 kB/s Pre-Read: dd output: dd: error reading '/dev/sdb': Input/output error Pre-Read: dd output: 0+0 records in Pre-Read: dd output: 0+0 records out Pre-Read: dd output: 0 bytes copied, 501.863 s, 0.0 kB/s Pre-Read: dd output: dd: error reading '/dev/sdb': Input/output error Pre-Read: dd output: 0+0 records in Pre-Read: dd output: 0+0 records out Pre-Read: dd output: 0 bytes copied, 501.873 s, 0.0 kB/s Pre-Read: dd output: dd: error reading '/dev/sdb': Input/output error Pre-Read: dd output: 0+0 records in Pre-Read: dd output: 0+0 records out Pre-Read: dd output: 0 bytes copied, 501.875 s, 0.0 kB/s Pre-Read: dd output: dd: error reading '/dev/sdb': Input/output error Pre-Read: dd output: 0+0 records in Pre-Read: dd output: 0+0 records out Pre-Read: dd output: 0 bytes copied, 501.885 s, 0.0 kB/s Pre-Read: dd output: dd: error reading '/dev/sdb': Input/output error Pre-Read: dd output: 0+0 records in Pre-Read: dd output: 0+0 records out Pre-Read: dd output: 0 bytes copied, 501.895 s, 0.0 kB/s Pre-Read: dd output: dd: error reading '/dev/sdb': Input/output error Pre-Read: dd output: 0+0 records in Pre-Read: dd output: 0+0 records out Pre-Read: dd output: 0 bytes copied, 501.898 s, 0.0 kB/s Pre-Read: dd output: dd: error reading '/dev/sdb': Input/output error Pre-Read: dd output: 0+0 records in dd process hung at 0, killing ... Pre-read: pre-read verification started 4 of 5 retries... Pre-Read: dd output: 0+0 records out Pre-Read: dd output: 0 bytes copied, 502.505 s, 0.0 kB/s Pre-Read: dd output: dd: error reading '/dev/sdb': Input/output error Pre-Read: dd output: 0+0 records in Pre-Read: dd output: 0+0 records out Pre-Read: dd output: 0 bytes copied, 502.515 s, 0.0 kB/s Pre-Read: dd output: dd: error reading '/dev/sdb': Input/output error Pre-Read: dd output: 0+0 records in Pre-Read: dd output: 0+0 records out Pre-Read: dd output: 0 bytes copied, 502.744 s, 0.0 kB/s Pre-Read: dd output: dd: error reading '/dev/sdb': Input/output error Pre-Read: dd output: 0+0 records in Pre-Read: dd output: 0+0 records out Pre-Read: dd output: 0 bytes copied, 502.767 s, 0.0 kB/s Pre-Read: dd output: dd: error reading '/dev/sdb': Input/output error Pre-Read: dd output: 0+0 records in Pre-Read: dd output: 0+0 records out Pre-Read: dd output: 0 bytes copied, 502.777 s, 0.0 kB/s Pre-Read: dd output: dd: error reading '/dev/sdb': Input/output error Pre-Read: dd output: 0+0 records in Pre-Read: dd output: 0+0 records out Pre-Read: dd output: 0 bytes copied, 502.786 s, 0.0 kB/s Pre-Read: dd output: dd: error reading '/dev/sdb': Input/output error Pre-Read: dd output: 0+0 records in Pre-Read: dd output: 0+0 records out Pre-Read: dd output: 0 bytes copied, 502.796 s, 0.0 kB/s Pre-Read: dd output: dd: error reading '/dev/sdb': Input/output error Pre-Read: dd output: 0+0 records in Pre-Read: dd output: 0+0 records out Pre-Read: dd output: 0 bytes copied, 502.805 s, 0.0 kB/s Pre-Read: dd output: dd: error reading '/dev/sdb': Input/output error dd process hung at 0, killing ... Pre-read: pre-read verification started 5 of 5 retries... Pre-Read: dd output: 0+0 records in Pre-Read: dd output: 0+0 records out Pre-Read: dd output: 0 bytes copied, 503.133 s, 0.0 kB/s Pre-Read: dd output: dd: error reading '/dev/sdb': Input/output error Pre-Read: dd output: 0+0 records in Pre-Read: dd output: 0+0 records out Pre-Read: dd output: 0 bytes copied, 503.143 s, 0.0 kB/s Pre-Read: dd output: dd: error reading '/dev/sdb': Input/output error Pre-Read: dd output: 0+0 records in Pre-Read: dd output: 0+0 records out Pre-Read: dd output: 0 bytes copied, 503.152 s, 0.0 kB/s Pre-Read: dd output: dd: error reading '/dev/sdb': Input/output error Pre-Read: dd output: 0+0 records in Pre-Read: dd output: 0+0 records out Pre-Read: dd output: 0 bytes copied, 503.161 s, 0.0 kB/s Pre-Read: dd output: dd: error reading '/dev/sdb': Input/output error Pre-Read: dd output: 0+0 records in Pre-Read: dd output: 0+0 records out Pre-Read: dd output: 0 bytes copied, 503.171 s, 0.0 kB/s Pre-Read: dd output: dd: error reading '/dev/sdb': Input/output error Pre-Read: dd output: 0+0 records in Pre-Read: dd output: 0+0 records out Pre-Read: dd output: 0 bytes copied, 503.18 s, 0.0 kB/s Pre-Read: dd output: dd: error reading '/dev/sdb': Input/output error Pre-Read: dd output: 0+0 records in Pre-Read: dd output: 0+0 records out Pre-Read: dd output: 0 bytes copied, 503.189 s, 0.0 kB/s Pre-Read: dd output: dd: error reading '/dev/sdb': Input/output error Pre-Read: dd output: 0+0 records in Pre-Read: dd output: 0+0 records out Pre-read: pre-read verification failed! error encountered, exiting ... But if I run preclear skipping preread and postread, it succeeds. Preclear Disk Version: 1.0.30 Disk size: 6001175126016 Disk blocks: 1465130646 Blocks (512 bytes): 11721045168 Block size: 4096 Start sector: 0 Zeroing: zeroing the disk started 1 of 5 retries... Zeroing: emptying the MBR. Zeroing: progress - 25% zeroed @ 181 MB/s Zeroing: progress - 50% zeroed @ 167 MB/s Zeroing: progress - 75% zeroed @ 139 MB/s Zeroing: zeroing the disk completed! Signature: writing signature... Signature: verifying Unraid's signature on the MBR ... Signature: Unraid preclear signature is valid! Cycle: elapsed time: 10:48:23 Preclear: total elapsed time: 10:48:23 Does this mean that the disk is faulty ?

Thanks @itimpi - that worked perfectly using the file manager !

I added a new cache drive and changed my appdata location to this new drive, and my docker apps to use /mnt/m2cache/appdata Also updated docker settings Unfortunately, now appdata and system share seem to be spread across 3 drives How would I consolidate appdata and system on a single cache drive ? Is it as simple as going to the other disks and manually deleting those folders? Thanks.