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Add MeG migration instructions
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caubet_m
2025-08-05 17:13:11 +02:00
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pages/meg/99-support/migration-to-merlin7.md
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@@ -76,7 +76,7 @@ If you are stuck, email: [merlin-admins@lists.psi.ch](mailto:merlin-admins@lists
### Migration Procedure ### Migration Procedure
1. **Run an initial sync** 1. **Run an initial sync**, ideally within a `tmux` session
* This copies the bulk of the data from MeG to Merlin7. * This copies the bulk of the data from MeG to Merlin7.
* **IMPORTANT: Do not modify the destination directories** * **IMPORTANT: Do not modify the destination directories**
* Please, before starting the transfer ensure that: * Please, before starting the transfer ensure that:
@@ -142,9 +142,16 @@ Options:
> Defaults can be updated if necessary. > Defaults can be updated if necessary.
#### Migration example #### Migration examples
The following example migrates the entire online data ##### Example: Migrating the Entire `online` Directory
The following example demonstrates how to migrate the **entire `online`** directory.
{{site.data.alerts.tip}}
You may also choose to migrate only specific subdirectories if needed.
However, migrating full directories is generally <b>simpler</b> and <b>less error-prone</b> compared to handling multiple subdirectory migrations.
{{site.data.alerts.end}}
```bash ```bash
[root@meg-s-001 bin]# experiment_migration.bash -b /meg -S /data/project/meg -S data1 -D data1 -p "online" [root@meg-s-001 bin]# experiment_migration.bash -b /meg -S /data/project/meg -S data1 -D data1 -p "online"
@@ -158,7 +165,13 @@ Please confirm to start (y/N): N
❌ Transfer cancelled by user. ❌ Transfer cancelled by user.
``` ```
The following example migrates a subdirectory: ##### Example: Migrating a Specific Subdirectory
The following example demonstrates how to migrate **only a subdirectory**.
⚠️ **Important:**
- When migrating a subdirectory, **do not** run concurrent migrations on its parent directories.
- For example, avoid running migrations with `-p "shared"` while simultaneously migrating `-p "shared/subprojects"`.
```bash ```bash
[root@meg-s-001 bin]# experiment_migration.bash -b /meg -B /data/project/meg -S data1 -D data1 -p "shared/subprojects/meg1" [root@meg-s-001 bin]# experiment_migration.bash -b /meg -B /data/project/meg -S data1 -D data1 -p "shared/subprojects/meg1"
@@ -170,3 +183,5 @@ The following example migrates a subdirectory:
Please confirm to start (y/N): N Please confirm to start (y/N): N
``` ```
This command initiates the migration of the directory: `/meg/data1/shared/subprojects/meg1` → `login002.merlin7.psi.ch:/data/project/meg/data1/shared/subprojects/meg1`