Upgraded to 11 - now getting this: swap_pager: indefinite wait buffer:...

[Crispin]

Folks,

Recently upgraded to 11 and having some weird things start happening. Amongst others (separate posts) I now have this:

When I ILO onto the server it has a screen full of the following:

Code:

Jun 25 09:25:18 nas swap_pager: indefinite wait buffer: bufobj: 0, blkno: 2097178, size: 4096
Jun 25 09:25:18 nas swap_pager: indefinite wait buffer: bufobj: 0, blkno: 2097175, size: 4096
Jun 25 09:36:17 nas swap_pager: indefinite wait buffer: bufobj: 0, blkno: 2097284, size: 12288
Jun 25 09:53:56 nas swap_pager: indefinite wait buffer: bufobj: 0, blkno: 2097169, size: 8192
Jun 25 10:33:56 nas swap_pager: indefinite wait buffer: bufobj: 0, blkno: 2098352, size: 16384
Jun 25 10:34:16 nas swap_pager: indefinite wait buffer: bufobj: 0, blkno: 2098352, size: 16384
Jun 25 10:34:41 nas swap_pager: indefinite wait buffer: bufobj: 0, blkno: 2098276, size: 65536
Jun 25 10:35:02 nas swap_pager: indefinite wait buffer: bufobj: 0, blkno: 2098276, size: 65536
Jun 25 10:35:45 nas swap_pager: indefinite wait buffer: bufobj: 0, blkno: 2097367, size: 16384
Jun 25 10:49:19 nas swap_pager: indefinite wait buffer: bufobj: 0, blkno: 2097166, size: 4096

These are in log/messages

What might be wrong? Something I need to worry about? How can I fix it.

I am running an rsync backup to USB disk - could this be related?
I appreciate this is why the load averages are so high...

Since my previous lumpy upgrade a few weeks ago I replaced the SD card with a brand new SanDisk 32GB (from PC World - not fake) and reinstalled everything.

Code:

HP Gen 8 microserver.
System Information
Hostname nas.local Edit
Build FreeNAS-11.0-RELEASE (a2dc21583)
Platform Intel(R) Core(TM) i3-3240 CPU @ 3.40GHz
Memory 16184MB
System Time Sun Jun 25 10:52:37 BST 2017
Uptime 10:52AM up 21:49, 1 users
Load Average 6.33, 5.16, 4.73

Thanks all


C

 

[joeschmuck]

Here is the meaning as I understand it:

What does the error ``swap_pager: indefinite wait buffer:'' mean?
This means that a process is trying to page memory to disk, and the page attempt has hung trying to access the disk for more than 20 seconds. It might be caused by bad blocks on the disk drive, disk wiring, cables, or any other disk I/O-related hardware. If the drive itself is actually bad, you will also see disk errors in /var/log/messages and in the output of dmesg. Otherwise, check your cables and connections.

While I'm not sure if this is a FreeNAS 11 issue or more of a hardware issue I would first run a smart short test and post those results and then a smart long test on all drives to rule those out and post the results of each drive. I did search the bug tracker and no one has reported this as an issue, not saying it isn't FreeNAS 11, just not reported if it is.

Also, it would be good to know if this is repeatable, meaning if you power off your system and power it back on, do you still have the problem?

While troubleshooting this, if it's repeatable, then turn off your jails and plugins and VMs and reboot, assuming this is not a hardware issue.

Good Luck, this could take a while.

 

[elangley]

Was there a result for this? I am having the same issue with one of my systems.