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Maxim Devaev 2022-06-20 04:35:54 +03:00
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docs/pst.md
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@ -1,6 +1,6 @@
# Persistent storage
??? note
!!! note
This feature is available on images older than 2022.06.20
Sometimes advanced use of PiKVM requires storing some data on disk like API keys, config files, or something like that.
@ -34,8 +34,15 @@ Mon Jun 20 04:23:14 MSK 2022 + --some --script --args
```
So, what's going on here:
1. `kvmd-pstrun` connects to the `kvmd-pst` daemon, which manages the mounting of the storage.
2. If everything is fine, the daemon will remount the storage to RW mode and report the data root to `kvmd-pstrun`.
3. `kvmd-pstrun` runs the script and pass the data root path using the environment variable `KVMD_PST_DATA` (`/var/lib/kvmd/pst/data`).
4. If the `kvmd-pst` daemon stops or any other daemon error occurs, the script will be killed.
5. After the script is finished, the daemon will remount the storage to RO mode.
The return code will be equal to the script code if it was run, or 1 if a remount error occurred.