Ubuntu 22 settings for disk timeour

[Dormelchen2]

Hello together,

last week we had an issue with storage.

the Windows VMs are running fine with a few seconds storage lost, but the ubuntu servers are crashing.

i read a long time ago, that there is a setting to increase the timeout.

But i cannot find.. only settings for netapp storage.

any ideas

Thank you

[Andrea Consalvi]

Hi,
this issue is quite common with modern Linux distributions like Ubuntu 22 when there's a brief storage interruption. Unlike Windows, many Linux kernels are more aggressive in how they handle I/O timeouts, especially with default settings.

You can try increasing the disk timeout by adding a udev rule. Here's how:

sudo vi /etc/udev/rules.d/99-scsi-timeout.rules 

And add this line:

ACTION=="add", SUBSYSTEM=="scsi", ATTR{device/timeout}="180"

This will increase the timeout to 180 seconds for all SCSI devices.

Then reload the rules:

sudo udevadm control --reload
sudo udevadm trigger 

And verify the timeout setting with:

cat /sys/block/sd*/device/timeout