YourNightmar3 Posted October 20, 2020 Share Posted October 20, 2020 (edited) I recently changed from a single-SSD XFS cache to a dual SSD BTRFS cache. I stopped VM's and Docker, moved everything off the cache drive, reformatted it to BTRFS and added a second one, then moved everything back. I deleted my docker.img file and redownloaded all docker images from the "previous apps" tab as has been mentioned many times on this forum. I must have done something wrong because when i try to install a new docker container i now get the following error: Error: open /var/lib/docker/tmp/GetImageBlob484538067: read-only file system. I do not know where to start solving this. My diagnostics file is attached to this post. Many thanks in advance for any help. tower-diagnostics-20201020-1526.zip Edited October 20, 2020 by YourNightmar3 Quote Link to comment
JorgeB Posted October 20, 2020 Share Posted October 20, 2020 Pool fs is fully allocated, you need to run a balance, see here for more info, king of strange this is happening in a new filesystem, did you fill it up completely before? 1 Quote Link to comment
YourNightmar3 Posted October 20, 2020 Author Share Posted October 20, 2020 (edited) 8 minutes ago, JorgeB said: Pool fs is fully allocated, you need to run a balance, see here for more info, king of strange this is happening in a new filesystem, did you fill it up completely before? Thank you for the quick reply. Now that i think about it, i did accidentally set a share that wasn't supposed to be on cache to cache and it filled up the cache completely. I didn't think much of it as i put the share cache usage back to normal and ran mover again. I ran btrfs balance start -dusage=75 /mnt/cache with the following result: Done, had to relocate 203 out of 934 chunks But unfortunately when creating a docker container i am still getting "Error: open /var/lib/docker/tmp/GetImageBlob091507751: read-only file system" Edited October 20, 2020 by YourNightmar3 1 Quote Link to comment
JorgeB Posted October 20, 2020 Share Posted October 20, 2020 2 minutes ago, YourNightmar3 said: But unfortunately when creating a docker container i am still getting "Error: open /var/lib/docker/tmp/GetImageBlob091507751: read-only file system" You'll need to re-start the docker service, that should do it, if it doesn't recreate the docker image. 2 Quote Link to comment
YourNightmar3 Posted October 20, 2020 Author Share Posted October 20, 2020 8 minutes ago, JorgeB said: You'll need to re-start the docker service, that should do it, if it doesn't recreate the docker image. Thanks so much! It worked! I did find that thread you linked when googling for the problem but i also found some people saying i had to reformat my entire SSD cache so im glad it was solved with this solution instead. Why is this command nessecary when the cache fills up? Will i have to do this again in the future? Quote Link to comment
JorgeB Posted October 20, 2020 Share Posted October 20, 2020 This should no longer happen with recent kernels, but in some circumstances it does, you're not the first. 1 Quote Link to comment
ajugland Posted February 4, 2021 Share Posted February 4, 2021 Thanks alot. My NVME cache filled up and I got same error after this. Quote Link to comment
Cakroksh Posted April 13, 2021 Share Posted April 13, 2021 On 10/20/2020 at 10:00 AM, YourNightmar3 said: Thank you for the quick reply. Now that i think about it, i did accidentally set a share that wasn't supposed to be on cache to cache and it filled up the cache completely. I didn't think much of it as i put the share cache usage back to normal and ran mover again. I ran btrfs balance start -dusage=75 /mnt/cache with the following result: Done, had to relocate 203 out of 934 chunks But unfortunately when creating a docker container i am still getting "Error: open /var/lib/docker/tmp/GetImageBlob091507751: read-only file system" i think i am chasing a similar issue but not certain but when i tried to run the balance cmd i got the error ERROR: error during balancing '/mnt/cache': Read-only file system pepper-diagnostics-20210413-0751.zip Quote Link to comment
JorgeB Posted April 13, 2021 Share Posted April 13, 2021 36 minutes ago, Cakroksh said: ERROR: error during balancing '/mnt/cache': Read-only file system Cache filesystem is corrupt, you should backup and re-format. Quote Link to comment
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