mephisto1335

Thanks for your reply! I ran the code you provided and after restarting the array the btrfs scrub reported no errors. This is the status after running: UUID: 5c65006f-a1d4-41c0-8546-2c48b83f3e81 Scrub started: Sun Jul 26 01:11:30 2026 Status: finished Duration: 0:54:24 Total to scrub: 1.76TiB Rate: 566.61MiB/s Error summary: no errors foundBut apparently this only checked the /dev/sdg1 not /dev/nvme0n1p1. btrfs file system usage now reports this: Overall: Device size: 2.73TiB Device allocated: 1.78TiB Device unallocated: 967.49GiB Device missing: 0.00B Device slack: 0.00B Used: 1.76TiB Free (estimated): 985.51GiB (min: 501.76GiB) Free (statfs, df): 985.51GiB Data ratio: 1.00 Metadata ratio: 2.00 Global reserve: 512.00MiB (used: 0.00B) Multiple profiles: yes (data, metadata, system) Data Data Metadata Metadata System System Id Path single RAID0 RAID1 DUP RAID1 DUP Unallocated Total Slack -- -------------- --------- --------- -------- --------- --------- -------- ----------- --------- ----- 1 /dev/sdg1 494.00GiB 663.51GiB 1.97GiB 4.00GiB 32.00MiB 16.00MiB 699.49GiB 1.82TiB - 2 /dev/nvme0n1p1 - 661.51GiB 1.97GiB - 32.00MiB - 268.00GiB 931.51GiB - -- -------------- --------- --------- -------- --------- --------- -------- ----------- --------- ----- Total 494.00GiB 1.29TiB 1.97GiB 2.00GiB 32.00MiB 8.00MiB 967.49GiB 2.73TiB 0.00B Used 478.70GiB 1.29TiB 1.95GiB 594.22MiB 160.00KiB 32.00KiB Now a test transfer of a subfolder (~2000 files, 20GB) which definetly had input/output errors during the last copies ran just fine. I'll run another full copy of the files over the night and report the results. What would be the safest way to now fully convert the Pool (Data/Metadata/System) to Raid0/Single, so that I can use the full 3TB? Would you recommend Single or Raid0 for my purposes? Thanks! cassiopeia-diagnostics-20260726-0210.zip

Hello! Unfortunately I messed up when wanting to add a 1TB drive to my single drive 2TB btrfs pool. As I was running low on storage (only about 20GB left) I wanted to simply extend the pool by 1TB but when adding the drive Unraid converted it to Raid1 mode. The WebUI now showed 1.5TB capacity even though I had more than 1.5TB on the first drive to begin with and looking at the balance status showed, that 1TB of the data is in Raid1 (maxxing out the new drive) and the rest on the old drive is in single mode. As I wanted to use all storage, I tried to convert the pool to Raid0 using the WebUI, but the action just wouldn't start. Only after running a smart test on both drives, restarting the array and then waiting for a while did the conversion start. Unfortunately this didn't seem to work, as the pool would not only be mounted as Read Only. Later I figured this was probably due to insufficient space on the drives, indicated by the error logs: As everything was kinda messed up, I just decided to copy all data from the pool over to my array and then format the drives and start fresh. Unfortunately I got thousands of errors during the copy process, like this: cpg: error reading '/path/to/file/image.JPG': Input/output error As a result, thousands of images couldn't be copied and have 0B as size on the array, and for many images that seem to be openable correctly, their previews are corrupted. During the copy process I got log lines like this: Jul 25 07:47:07 cassiopeia kernel: BTRFS error (device sdg1 state EA): level verify failed on logical 2543208398848 mirror 1 wanted 1 found 0 Jul 25 07:47:07 cassiopeia kernel: BTRFS error (device sdg1 state EA): level verify failed on logical 2543208398848 mirror 2 wanted 1 found 0 Jul 25 07:47:07 cassiopeia kernel: BTRFS error (device sdg1 state EA): level verify failed on logical 2543208398848 mirror 1 wanted 1 found 0 Jul 25 07:47:07 cassiopeia kernel: BTRFS error (device sdg1 state EA): level verify failed on logical 2543208398848 mirror 2 wanted 1 found 0 Jul 25 07:47:08 cassiopeia kernel: _btrfs_printk: 68 callbacks suppressed Is there any possibility to save the btrfs config and restore the corrupted files? They are very important to me. Thank you so much for your help! cassiopeia-diagnostics-20260725-1502.zip