On 2020-04-23 21:03, ToddAndMargo via users wrote:
On 2020-04-23 05:25, Ed Greshko wrote:
On 2020-04-23 20:06, ToddAndMargo via users wrote:
Also, when this happens, backups (dump, tar) take about eight times long to complete.
And to just be clear, if no slow down is apparent, shutdown and reboot work perfectly: they do not hang
So, you're saying that if you see a slowdown then you'll have the issue with reboot/shutdown.
Yes. And time does not heal. Only the magic one fingered reset (POR -- Power On Reset) works.
That would suggest to me that determining the cause of the slowdown is most important.
I would concur
When the slowdown happens, can you switch to another VT (ctrl-alt-F2) or ssh in from elsewhere and see if there is any unusual CPU or I/O activity?
You have to be quick. As soon as "shutdown reached", everything freezes except the revolving CPU registry prints outs
I'm not saying you need to check during shutdown.
I'm saying do not shutdown. Determine the cause of the slowdown. Roger gave a strategy for that.
It sounds as if this issue happens for you frequently? And, are you still on the kernel shown in the BZ?
What is BZ?
Bugzilla.
There have been updates to the kernel since that time.
Every day. I keep hoping a kernel update will come through and fix it
You're on 5.5.17-200 now?