HA device timeout error

Software-based VM-centric and flash-friendly VM storage + free version

Moderators: anton (staff), art (staff), Max (staff), Anatoly (staff)

yaroslav (staff)
Staff
Posts: 2317
Joined: Mon Nov 18, 2019 11:11 am

Thu Feb 08, 2024 11:18 am

MPIO can be the Least Queue Depth for witnesse HA too.
Are other devices (i.e., data), also connected from both servers?
bertram
Posts: 16
Joined: Mon Sep 17, 2018 4:09 am

Sat Feb 10, 2024 8:25 am

logitech wrote: 2. StarWind VSAN 8.0.15260 installed
an old version installed, we will plan for the upgrade soon.
What version do you running? I can remember we had the same issue after installing Version V8 (build 14947) but I can not say from which version. The seperate active/active cluster was running fine after the update for ~2 weeks but out of nothing your mentioned issues appeared. After updating to the successor Version V8 (build 15020) the problem disappeared. I assume a bug was fixed with this version when I read the notes: "Synchronous Replication - Fixed spurious replication failure."

I hope you can solve your problem.

Regards
betram
logitech
Posts: 24
Joined: Sun Feb 04, 2024 9:50 am

Mon Feb 12, 2024 7:10 pm

Hi,

We updated the policy settings for all connections from virtual hosts to the storage nodes to "Least Queue Depth" .
Do we need to update the policy settings from Storage Node A to Storage Node B too?
yaroslav (staff)
Staff
Posts: 2317
Joined: Mon Nov 18, 2019 11:11 am

Mon Feb 12, 2024 9:33 pm

You need to update for both nodes.
logitech
Posts: 24
Joined: Sun Feb 04, 2024 9:50 am

Tue Feb 13, 2024 9:54 am

I already updated the connection policy on vh01 and vh02. I don't see any iSCSI connection between storage01 and storage02 to update the policy settings.
what do you mean by both nodes? the hypervisor or storage?
yaroslav (staff)
Staff
Posts: 2317
Joined: Mon Nov 18, 2019 11:11 am

Tue Feb 13, 2024 11:19 am

I mean it for hypervisor. It has to be on all hypervisor nodes for all ha devices.
logitech
Posts: 24
Joined: Sun Feb 04, 2024 9:50 am

Tue Feb 13, 2024 1:13 pm

done, does it require any restart to take effect?
yaroslav (staff)
Staff
Posts: 2317
Joined: Mon Nov 18, 2019 11:11 am

Tue Feb 13, 2024 1:47 pm

Nope.
yaroslav (staff)
Staff
Posts: 2317
Joined: Mon Nov 18, 2019 11:11 am

Wed Feb 14, 2024 8:50 pm

Updates are installed manually.
See https://knowledgebase.starwindsoftware. ... d-version/. This procedure describes how to avoid downtime.
For CVM, press the Gear button at the top -> Update. The general prerequisites: check storage connectivity, check HA devices synchronization, etc. are the same.
logitech
Posts: 24
Joined: Sun Feb 04, 2024 9:50 am

Sat Feb 17, 2024 6:18 pm

Hi,

What is the difference between MCS policy and MPIO policy? both should be Least Queue Depth.
yaroslav (staff)
Staff
Posts: 2317
Joined: Mon Nov 18, 2019 11:11 am

Sat Feb 17, 2024 9:44 pm

We recommend the Least Queue Depth as it grants the best performance.
logitech
Posts: 24
Joined: Sun Feb 04, 2024 9:50 am

Sun Feb 18, 2024 8:15 am

should we apply Least Queue Depth policy on MPIO and MCS policy settings?
yaroslav (staff)
Staff
Posts: 2317
Joined: Mon Nov 18, 2019 11:11 am

Mon Feb 19, 2024 4:03 am

Could you please let me know what MCS is?
logitech
Posts: 24
Joined: Sun Feb 04, 2024 9:50 am

Mon Feb 19, 2024 6:54 pm

mcs2.png
mcs2.png (33.49 KiB) Viewed 560 times
mcs1.png
mcs1.png (12.7 KiB) Viewed 560 times
yaroslav (staff)
Staff
Posts: 2317
Joined: Mon Nov 18, 2019 11:11 am

Mon Feb 19, 2024 8:21 pm

Thank ypu.
For one path it does not matter for multiple paths please use Least Queue Depth.
Post Reply