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Forum Discussion
Volume on RN4220 read/only - trying to understand btrfs
Hi. One of the volumes on our RN4220 has become read/only, probably due to free space exhaustion. Simply freeing-up space doesn't seem to help, and I suspect a reboot is in our future - this has ha...
6.5.1 is quite ancient and thus running an old btrfs version. Likely your system is unbalanced and in need of a balance, have you been running balance on schedule? Do you frequently add a lot of data and then delete it?
If you can delete data you may be able to run balance, but IIRC balance on 6.5.1 runs with full chunks by default so you might need to do it over CLI with -dusage and -musage values set lower.
Hi MushyMiddle
I agree that Netgear used BTRFS way before it was mature enough. Heck, the oldest RN firmwares uses a release candidate of BRTFS (basically beta) :)
That being said, it has grown into a very solid filesystem. I would use it over pretty anything else at this point, maybe besides ZFS. Keeping your NAS up-to-date is important and running a 5-6 year old firmware isn't ideal at all. Remember, the BTRFS version also gets updated as part of the firmware upgrade.
It is more likely that the filesystem ran into some specific issue, prompting the volume to go read-only. It does not look like a space issue to me. I can take a look at the logs for you, if you like.
Pull the logs from the web interface: System > Logs > Download Logs.
That will download a zip file with all the NAS logs. Upload the zip file to a Google drive, Dropbox or similar and create a sharing link from where I can download the zip file. PM me this link and I will have a look at them.
Cheers
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