gcloudrig-games disk does not create from shapshot

[oschwartz10612]

This has happened twice now to me. I start the instance and it boots normally, but it never creates the games disk from the snapshot. I still am trying to figure out why this is happening, but I am still not sure.

[koderian]

Same. Ocasionally the disk never gets attached

[oschwartz10612]

Yeah this just happened to me again.

To clarify, under "Disks" the disk is never loading. It never tries to create it and I cant see any errors of it failing in the logs but I could be looking in the wrong places...

[putty182]

I've had this happen a few times too - my suspicion lies with the boot script being executed too early. I'll take a closer look next time it happens!

Some things to help troubleshoot:

• Does the disk get created but not attached, or is it not created at all?

• Does a disk with the same name still exist in another region/zone?

• Does restarting the Instance attach/restore the disk correctly?

• Are there any relevant Disk Creation or Disk Attach activity recorded in GCP Compute Operations?

On Mon, 8 Mar 2021, 11:36 am Owen Schwartz, [email protected] wrote:

Yeah this just happened to me again.

To clarify, under "Disks" the disk is never loading. It never tries to create it and I cant see any errors of it failing in the logs but I could be looking in the wrong places...

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[josephrkramer]

This has happened to me a number of times.

• Does the disk get created but not attached, or is it not created at all? Not created at all.

• Does a disk with the same name still exist in another region/zone? Nope, no other disks.

• Does restarting the Instance attach/restore the disk correctly? Yes, restarting the instance creates and attaches the disk correctly.

[oschwartz10612]

I can't see anything in the log viewer.

Scaling it down in this state also frequently fails to delete the old image of the machine and it has to be manually deleted.

[putty182]

I'm thinking storing the disk name as a project metadata "flag" might make this more resilient (and maybe even a tad faster).

scale-up:

• Make the scale-up script restore/create the games disk snapshot, rather than the PowerShell boot script

• Once created, store a flag in project metadata indicating the disk's name and zone. This can be done in parallel while scaling up the Instance Group to save a bit of time.

• Modify the PowerShell boot script to poll project metadata for this flag (similar to #32). Once found, attach the disk it mentions.

• Send a desktop toast when starting to attach any disk (implementing #74)

• Never stop polling; if the flag is removed, detach the disk from within the Instance (after running sync)

scale-down:

• Remove the project metadata flag and poll until the disk is detached.

• If a timeout is reached, scale down the Instance Group anyway and keep waiting for the disk to be detached

• As soon as disk is detached, commence snapshot and disk deletion (can be in parallel with scaling down the Instance, if this hasn't already started)

[koderian]

Sounds good! The disk issue seems really random.

Some times, the games disk gets attached within minutes of the instance scaling up. Sometimes it never attaches and I need to ./scale-down and then ./scale-up for it to work.