Alright, so I'm running unRAID 5.05 on a system with a WD Red 3TB parity drive, 3 more WD Red 3TB data drives, a Seagate 7200.14 2TB drive and a 1TB Seagate 7200.12 as a cache drive. Full system specs at the bottom of the post.
After a period of time, sometimes a few minutes, sometimes a couple of days, the unRAID web interface will become non-responsive and time-out, and I will be unable to access sickbeard, CP, or Transmission. I can *usually* still TelNet into the server at this point for a powerdown, but not always. Sometimes Transmission will spit out issues claiming that it's trying to write files to a read-only location despite the fact that the cache drive is CHMOD'd as 777, tried running as both nobody and root with the same result. SickBeard will also have trouble post-processing downloaded items and fail to relocate them to their permanent location on the array off the cache drive.
I haven't installed anything new or modified my config in any way in a couple of months - just have Transmission, CouchPotato, and sickbeard doing their thing and downloading stuff which I'll end up watching through Plex. The problem seems to be getting worse. I've run a reiserfsck on all of the array drives and found no issues. I did the same check on the cache drive while the array was started in maintenance mode and it finished almost immediately with no issues, so I'm not sure I checked that one correctly (reiserfsck --check /dev/sde1 ).
Is it possible these problems are being caused by a failing cache drive? The drive is pretty old and does return some SMART test errors (End-to-End Error reads as Failed Now), but it's been returning that since I installed it and I haven't had these problems until recently. Any other recommendations on things I can check to try and track this issue down? I'm not particularly Linux savvy, but I'm tech-savvy in general and I can follow instructions.
System Overview
unRAID Version: unRAID Server Plus, Version 5.0.5
Motherboard: ASRock - FM2A75M-DGS R2.0
Processor: AMD A4-5300 APU with Radeon HD Graphics - 3.4 GHz
Cache: L1 CACHE = 96 kB (max. 96 kB)
L2 CACHE = 1024 kB (max. 1024 kB)
Memory: 2048 Module (max. 8 GB)
2048 MB = A1_BANK0, 667 MHz
Unknown = Unknown,
Network: eth0: 1000Mb/s - Full Duplex
Syslog: http://pastebin.com/aW4gtvVt