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ReadyNAS 214 BTRFS corruption - appears to be out of memory related
My ReadyNAS RN214, which has been reliably running for years, suddenly went read-only late yesterday afternoon. The UI log just had this ominous message: Jan 30, 2023 16:54:47 Volume: The volume...
Thanks for sharing this. I am wondering what apps and services you have running, and also what firmware version.
LimaAlphaHotel wrote:
- Is it possible to upgrade the memory in the RN 214, to prevent this happening again?
No - unfortunately it is not socketed, so it can not be upgraded.
Thanks for sharing this. I am wondering what apps and services you have running, and also what firmware version.
LimaAlphaHotel wrote:
- Is it possible to upgrade the memory in the RN 214, to prevent this happening again?
No - unfortunately it is not socketed, so it can not be upgraded.
StephenB wrote:Thanks for sharing this. I am wondering what apps and services you have running, and also what firmware version.
LimaAlphaHotel wrote:
- Is it possible to upgrade the memory in the RN 214, to prevent this happening again?
No - unfortunately it is not socketed, so it can not be upgraded.
My original reply seems to have vanished, although the forums still given me a badge for posting it?
Anyway, it's the latest 6.10.8 firmware. smb, rsynd and dlna service enabled and Plex is the only app running (or installed). Plex was using about 10MB of memory in total - the rsync daemon (that the oom reaper killed) over 300MB!
Never had a device corrupt an on disk file-system due to running out of memory before but I know these modern ones need more memory too so I guess do more in RAM. I still use ext on my own systems!
Shame it can't be upgraded to avoid this problem reoccurring - I will accept your response as the solution for answering the question.
After 12 days copying data back from backup, it's just fallen over with `out_of_memory+1dc` on the LED display. Completely unresponsive from the network and holding the power button also does nothing. I found at post https://community.netgear.com/t5/New-ReadyNAS-Users-General/Lost-access-to-Readynas-214-via-https/m-p/2111643 with the same symptom that says yanking the power is the only way to recover at this point.
Since I reset it to factory defaults and rebutil it, the only filesystems enabled are cifs and rsync. No apps at all installed on it (didn't get that far).
I've had this device running absolutely fine since I bought it in November 2018 and it's been absolutely rock solid since then until January when these out of memory problems have started. I've not changed any configuration (significantly changed what's stored on it, added/removed any shares, enabled/disabled any access methods, added any new apps).
EDIT: After reading the linked thread, I checked my services - Antivirus and File Search (which is suggested could be the cause) were already turned off. I turned off ReadyDLNA and uPnP as well but they were enabled for the 4 and a bit years before this started without any issues.
Was the volume still syncing? In addition to the additional drive access, a sync uses a lot of memory. Also, did you have multiple threads running for the file restore? How large are the drives? Not that either of these should have resulted in an out of memory issue, just searching for what did tip the memory usage over the top so you and others can avoid it.
Sandshark wrote:
Was the volume still syncing? In addition to the additional drive access, a sync uses a lot of memory. Also, did you have multiple threads running for the file restore? How large are the drives?
LimaAlphaHotel: I am also wondering if the drives are SMR or CMR (since SMR can have very low write speeds, which might result in excessive memory buffering).
Drive health might also factor in. Did you test the drives?
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