QPlus7

Done. Let’s see if it happens again. Thanks for the suggestion.

It just happened again. I had forgotten about this until I got an alert notifying me that UnRaid was offline.

I didn't realize I was so far out of date. I'm currently updating to 6.12.9 and will see if the issue persists.

Hi, all. I've been dealing with an issue for about a month or so but it hasn't been at the top of my priority list as a reboot fixes the issue, but it is becoming more and more prevalent now. From time-to-time by server will go offline and when I check the console I see the errors below: grcu: INFO: rcu preempt detected stalls on CUs/tasks: orcu: oTasks blocked on level-0 rcu_node (CPUs 0-7): P9307/1:b..1 oldetected by 5, t=83224420 jiffies, g=3172721, 4=51962606 ncpus=8) rcu: INFO: rcu preempt detected expedited stalls on CPUs/tasks: ( P9307 } 83249702 jiffies s: 26941 roat: 0x0/T orcu: blocking rcu node structures (internal RCU debug ): orcu: INFO: rcu preempt detected expedited stalls on CPUs/tasks: { P9307 } 83315237 jiffies s: 26941 root: 0x0/T orcu: blocking rcu node structures (internal RCU debug): orcu: INFO: rcu_ preempt detected expedited stalls on CPUs/tasks: € P9307 } 83380773 jiffies s: 26941 root: 0x0/T orcu: blocking rcu _node structures (internal RCU debug ): orcu: INFO: rcu_ preempt detected stalls on CPUs/tasks: orcu: oTasks blocked on level-o rcu_node (CUs 0-7): P9307/1:b..1 lodetected by 4, t=83404433 jiffies, g=3172721, 4=52049432 ncpus=8) orcu: INFO: rcu preempt detected expedited stalls on CPUs/tasks: € P9307 } 83446315 jiffies s: 26941 root: 0x0/T orcu: blocking rcu node structures (internal RCU debug ): calls on CPus/tasks: ( P9307 7 83511846 liffies s: 26941 root: Overt orCu: INFO: rcu preempt detected expedited stalls on CPUs/tasks: € P9307 ) 83511846 jiffies s: 26941 root: 0x0/T orcu: blocking rcu node structures (internal RCU debug ): orcu: INFO: rcu preempt detected expedited stalls on CPUs/tasks: { P9307 } 83577381 jiffies s: 26941 root: 0x0/T orcu: blocking rcu_node structures (internal RCU debug ): rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: orcu: oTasks blocked on level-0 rcu_node (CPUs 0-7): P9307/1:b..1 coldetected by 2, t=83584444 jiffies, g=3172721, 9=52139803 ncpus=B) orcu: INFO: rcu _preempt detected expedited stalls on CPUs/tasks: ( P9307 } 83642917 jiffies s: 26941 root: 0x0/T orcu: blocking rcu_node structures (internal RCU debug ): rcu: INFO: rcu preempt detected expedited stalls on CPUs/tasks: { P9307 } 83708453 jiffies s: 26941 root: 0x0/T rcu: blocking rcu _node structures (internal RCU debug) : rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-7): P9307/1:b..1 oldetected by 0, t=83764457 jiffies, g=3172721, q-52229960 ncpus=8) rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: € P9307 } 83773989 jiffies s: 26941 root: 0x0/T rcu: blocking rcu_node structures (internal RCU debug ): rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P9307 } 83839526 jiffies s: 26941 root: 0x0/T rcu: blocking rcu_node structures (internal RCU debug ): rcu : INFO: rcu preempt detected expedited stalls on CPUs/tasks: { P9307 } 83905061 jiffies s: 26941 root: 0x0/T rcu: blocking rcu_node structures (internal RCU debug ): rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-7): P9307/1:b..1 •(detected by 1, t=83944468 jiffies, g=3172721, 4-52319742 ncus=8) rcu: INFO: rcu preempt detected expedited stalls on CPUs/tasks: { P9307 } 83970598 jiffies s: 26941 root: 0x0/T rcu: blocking rcu _node structures (internal RCU debug ): rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: ( P9307 7 84036133 jiffies s: 26941 root: 0x0/T rcu: blocking rcu_node structures (internal RCU debug ): I cannot type anything at the physical console and the server is unresponsive on the network. Rebooting the server resolves the issue, but it comes back later. I'm running UnRaid 6.12.3 and diagnostics file is attached for review. Any help is greatly appreciated - thanks in advance! scw-nas01-diagnostics-20240327-0937.zip

Did you ever get this working? I'm trying to accomplish the same thing, although with 3 displays instead of 2. Any help is greatly appreciated - thanks in advance!

Good luck. I wish I could help but I didn't do anything special. After installing the software, the drives were available in Windows Explorer.

I'm using XFS.

I installed Linux File Systems for Windows by Paragon Software.

I put the drives in a Windows machine and was able to view the data on each of the drives that UnRaid is saying are unmountable with no filesystem.

There is definitely data on Disk 2, Disk 4, and Disk 5 as I am able to view everything on the Windows machine. I have a 14TB drive where I could copy the contents of all drives to and then just build a brand new array and then transfer from back from 14TB drive. Is there hope or is that my best strategy? I know it will take time, but I'm fine with that if that is what it takes to get my data consolidated again. Thanks again for all the help!

Ok, so I got all the disks (except the bad Disk 2) installed and assigned to a new array. However, the sdX assignments are different but I mapped everything out as it was in relation to Disk 1, Disk 2 (new), Disk 3, Disk 4, Disk 5 and Disk 6. I'm getting an error that says Disk 2, 4, and 5 are unmountable with no file system. Not sure if this is accurate or not but I am going to pull the drives and put them in a Windows machine where I am more comfortable and see if I can read the data (I have LinuxFS installed) there. While I figure that out, attached are the diags as requested, and a screenshot of my array configuration. via-nas01-diagnostics-20210728-2242.zip

Thanks for posting that - that is a huge help! I assume you mean Disk 2, though? The ddrescue command I ran was against /dev/sdf which is Disk 2.

My drives didn't automatically mount after the restart. Attached is what I see now. Any help is greatly appreciated!

Ok, ddrescue finally recovered the data to a new drive. I stopped the array and replaced the failed drive in my array. I then went to do a new config but didn't click preserve assignments. Did I just lose my data? Some of my drives don't appear to mount so I can't check using Unassigned Devices right now. I've just restarted the server to see if they mount automatically.

One more thing, does the drive need to be formatted before I start ddrescue? Edit: quick Google search indicated that it doesn't need to be formattted as the process will overwrite whatever is on the target drive anyway.