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[Solved] Unraid 6 - Cache Drive - webgui unresponsive


goinsnoopin

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Posted

So over the past couple of months this forum is littered with many emails about my unraid server and the webgui becoming unresponsive and multiple smbd processes running.  Some syslogs have shown some memory issues, however memcheck when run shows no issues.  My attempts to add memory to my older Supermicro C2SEE have been unsuccessful, so I have decided to smash my windows 7 PC and my unraid server together and fully embrace running win 7 as a VM. 

 

In preparation for this I created the ISO and Vdisk user shares....I also went through my existing shares and decided to remove the use cache drive setting for all of the shares with the exception of the new Vdisk user share.  After doing this, I noticed something interesting...my syslog no longer has strange entries being made about memory or killing processes, etc.  Htop and smbstatus and ps -ef don't show any smbd processes being spawned.

 

Is there anything specific about how the cache drive is utilized in unraid 6 that could explain the issues I was having?  The cache drive and all disks were formatted as reiserfs...I see that btrfs is needed for cache pools...is that a requirement for the cache drive in unraid 6 even if you are not utilizing a cache pool.

 

Just curious...and thought it was worth mentioning as there are a lot of unresponsive webgui posts on the forum.

 

Dan

Posted

No idea why removing the option to use the cache drive from share settings should make any difference unless there was some sort of file system corruption on the cache drive.

 

In terms of format to use for the cache drive then the only rule is that it has to be BTRFS if you want to use the cache pooling feature.  If you do not want that feature then any of the supported formats can be used. It seems to be a common view that XFS is probably the one that is the preferred format for maximum stability and performance.

Posted

I ran a reiser check on the cache drive and saw no errors.  Thanks for the opinion on XFS, I think my plan will be to reformat my cache drive as XFS and leave my user shares set as they are now so they do not utilize the cache drive.  For reference I have attached two diagnostics zip files.  The one with the 20151020-1434 date contains a syslog that is littered with memory issues, call traces, killall smbd.  The second syslog that contains the 20151023-0553 shows my system since then and as you can see the only syslog entries since the initial startup is the mover script initiating and then skipping the new vdisk share.

 

Again my only change was stopping my movie and sagetv shares from utilizing the cache drive.  I also deleted an appdata and Appdata share (one was my original unraid 5 Appdata share for plugins like logitech media server, and the other was an unraid 6 share for some dockers that I turned off while diagnosing issues).  As you can see these syslogs are night and day.

 

tower-diagnostics-20151020-1434.zip

tower-diagnostics-20151023-0553.zip

  • 1 month later...
Posted

Two weeks ago, I converted all of my reiserfs drives to XFS and my system has been running perfect!

 

I just wanted to take a minute and thank those of you who took the time to respond to my numerous posts on Unraid 6 being unresponsive.

 

Dan

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