March 1, 20215 yr Hi there. Woke up to see all my Docker apps stopped and when I try to start them it I see "Execution Error: System error". 4 of the apps show updates available, but when I click update I get this error: Error: open /var/lib/docker/tmp/GetImageBlob711164869: read-only file system Something wrong with my Docker img file? Thanks for any help. I searched but I'm not clear what to try. Diagnostics attached. Specs in my sig. tower-diagnostics-20210301-0530.zip Edited March 5, 20215 yr by stor44 SOLVED: Had to format cache pool, restore appdata and reinstall Dockers and VM.
March 1, 20215 yr Community Expert Cache filesystem is corrupt, best is to backup and re-format the pool.
March 5, 20215 yr Author Is this kind of corruption pretty common or did I do something wrong? Anyway I got things back to normal. Documenting it here in case I need it again, and in case it helps anyone else: - first I tried copying some data off the cache pool, but the corruption was too much. Files and folders were literally disappearing as I refreshed the directories. - I stopped the array which took way longer than usual, probably 5 minutes instead of 40 seconds. - I didn't know how to format the cache pool drives (2 x 1TB SSD). But I tried doing this: Just to be sure, I also formatted them using this command: blkdiscard /dev/sd# - at this point I upgraded to 6.9, in case there was any advantage to this new SSD formatting mentioned here: https://wiki.unraid.net/Unraid_OS_6.9.0#SSD_1_MiB_Partition_Alignment - then re-assigned the SSDs and formatted them to create the new cache pool - then I needed to restore some of the data I had backed up. Fortunately I have an "appdata-backup" folder. I'm helpless when it comes to untarring the tar file on unRAID, so I copied it to my Windows PC and used WinRAR. I extracted the data back to the cache pool, but WinRAR had a ton of errors about needing to run as Administrator, so I did that and ran it again. It still failed on a bunch of my Channels (DVR) and Plex metadata, but it got all the important files for my other Docker apps. - I tried to stop the array again, but it just hung, so I had to power off the whole PC. - This of course forces a parity check. 24 hours later, no errors. - I also had a backup of my Windows 10 VM thanks to this script: so I restored that. But booting it up, it was super slow, and even unRAID was running sluggish overall. Tracked it down to the "Tips and Tweaks" Plugin, I had "CPU Scaling Governor:" set to "Power Save". I set it to "On Demand" and rebooted and things were fine again. Blue Iris (security camera app I run in Win10) was still slow, but I had to re-enable NVIDIA acceleration in its settings. So, lots more for me to learn. I've attached new diagnostics on the chance there's anything else helpful in there. Cheers. tower-diagnostics-20210305-1548.zip
March 6, 20215 yr Community Expert 10 hours ago, stor44 said: Is this kind of corruption pretty common or did I do something wrong? It's not common with good hardware, still wouldn't worry about one time, but if it keeps happening there's likely some hardware issue.
March 6, 20215 yr Author Thanks, sounds good. This system is a 2014 gaming rig I converted to unRAID. Longer term I'm hoping to build a new system with unRAID in mind from the start.
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