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[MegaLinter] Apply linters automatic fixes to #357 #18

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Troubleshooting: Add instructions on what info to provide
vkucera Jun 4, 2026
7e3b54f
MegaLinter fixes
alibuild Jun 4, 2026
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14 changes: 12 additions & 2 deletions docs/troubleshooting/README.md
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Expand Up @@ -41,7 +41,7 @@ grep -e "\\[ERROR\\]" -e "\\[FATAL\\]" -e "\\[CRITICAL\\]" -e "segmentation" -e

See also [shell rc utilities](../tools/README.md#shell-rc-utilities).

Try to understand and resolve the first reported problem.
Try to understand and resolve the reported problems in order of appearance.

```note
You can inspect a failing [AliHyperloop test](../hyperloop/userdocumentation.md#-wagon-tests) in the same way. The log is saved in the `stdout.log` file in the test output directory.
Expand All @@ -54,6 +54,16 @@ See the [Support](../gettingstarted/support.md) section for the list of Mattermo
When asking for help with compilation or with running a local analysis, it may be useful to provide basic information about your O2Physics setup.
You can generate it using the [Setup diagnostic tool](../tools/README.md#setup-diagnostic-tool).

When asking for help with running an analysis:

- If the problem is on AliHyperloop, provide:
- the link to the read-only view of the [wagon test](../hyperloop/userdocumentation.md#-wagon-tests) or the [train run](../hyperloop/userdocumentation.md#train-runs).
- If the problem is local, provide:
- the name of the dataset of the input files,
- the command or script used to run the analysis,
- the log file,
- the dumped `dpl-config.json` file (and the input JSON file, if the dumped one is incomplete).

When posting on Mattermost:

- Do not paste the entire content of files or any long blocks of log lines or code directly in the message. If needed, attach the file.
Expand Down Expand Up @@ -180,7 +190,7 @@ Error in <TJAlienConnectionManager>: Failed to connect to any server! Giving up
- You should be greeted with `Welcome to the ALICE GRID`.
- Exit with `exit`.

### shmem: could not create a message of size ...
### shmem: could not create a message of size

Add `--shm-segment-size 1000000000` (or larger number) to your o2 command.
It is due to shared memory segment that is probably outdated for the size of the intermediate tables you have. It is actually set as 90% of system's max VSIZE allowance set in limits, or 2GB if the limits cannot be found, which is probably what happens in your case.
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