action #157528
openQA - coordination #121720: [saga][epic] Migration to QE setup in PRG2+NUE3 while ensuring availability
QA - coordination #123800: [epic] Provide SUSE QE Tools services running in PRG2 aka. Prg CoLo
Remove redundant ASM connections for powerPC machines size:S
0%
Description
Motivation¶
Our current hypothesis is that the PPC HMC struggles with two simultaneous connections to the ASM at the same time. It causes the managed system to "flicker" in the webui and constantly abort any operation you execute. We should explore if these connection issues can be resolved by only having one, single connection between ASM<->HMC.
Machines where this happens:
- soapberry
- blackcurrant
Acceptance criteria¶
- AC1: https://powerhmc1.oqa.prg2.suse.org/ shows no flickering anymore for machines going between "No connection" and "operating"
- AC2: racktables is up-to-date
Suggestions¶
- Research upstream what IBM suggests. We assume it's not foreseen that one connects more than one physical network connection to the same HMC
- Create an infra ticket according to https://progress.opensuse.org/projects/qa/wiki/Tools#SUSE-IT-ticket-handling asking to remove the secondary, redundant network connection. At best physically remove and update racktables, not in switch config so that not somebody else some months later tries to "fix" a disabled switch port
- Ensure that machines are still controllable over HMC after cable removal
- Ensure that racktables is up-to-date with the remaining connection
Updated by okurz about 1 month ago
- Tags set to infra, ppc, hmc, prg2
- Category set to Regressions/Crashes
- Target version set to Ready
- Parent task set to #123800
For both soapberry and blackcurrant in the HMC I now went to the ASM, removed older temporarily disconnected HMC connection entries and in the HMC remembered the IP, removed the system connection and re-added that one but only that one. If that keeps the HMC connections stable we should ask IT to disconnect the secondary physical ethernet connection.
Updated by okurz about 1 month ago
Haven't seen any flickering anymore so the software workaround seems to have helped.
Updated by okurz about 1 month ago
- Subject changed from Remove redundant ASM connections for powerPC machines to Remove redundant ASM connections for powerPC machines size:S
- Description updated (diff)
- Status changed from New to Workable
Updated by nicksinger about 1 month ago
- Status changed from Workable to In Progress
- Assignee set to nicksinger
Updated by openqa_review about 1 month ago
- Due date set to 2024-04-10
Setting due date based on mean cycle time of SUSE QE Tools
Updated by nicksinger about 1 month ago
- Status changed from In Progress to Workable
- Assignee deleted (
nicksinger)
Unassign due to sick leave. Connections in software already removed, SD-Ticket missing which requests to physically unplug the cables.
Also check https://bugzilla.suse.com/show_bug.cgi?id=1221485
Updated by okurz about 1 month ago
- Due date deleted (
2024-04-10) - Status changed from Workable to Blocked
- Assignee set to okurz
- Priority changed from Normal to Low
- Target version changed from Ready to Tools - Next
Good point. I also followed https://bugzilla.suse.com/show_bug.cgi?id=1221485 and I think we can wait for progress in there.
Updated by okurz 30 days ago
- Status changed from Blocked to Workable
- Assignee deleted (
okurz) - Priority changed from Low to Normal
- Target version changed from Tools - Next to Ready
https://bugzilla.suse.com/show_bug.cgi?id=1221485#c14 shows that they actually suffered from the same problem, same network connected to both physical HMC ethernet ports which should be avoided. So back to before.