Collecting drive dump files using the CLI

You can use the command-line interface (CLI) to collect dump files from drives. To collect internal log files from MDisks, run the triggerdrivedump command. Subsequently, you can list, delete or copy the dump files.

The triggerdrivedump command generates a dump file and saves it in the /dumps/drive directory on the node that contains the drive.

Issue the triggerdrivedump CLI command.
To generate a drive dump file for the specified drive, issue this commandtriggerdrivedump drive_id
Remember: In the resulting output, note the node_id that contains the dump file.
For example, in:
```
...
Drive dump on node id [74] successfully created
...
```
The node_id value is 74.
Issue the lsdumps command to list files in the /dumps/drive directory on the specified node.
To list the drive dump files for the specified node, issue this command: lsdumps -prefix /dumps/drive node_id | node_name
This resulting output displays the drive dumps:
```
id filename 
0  drivedump_7802207-1_20_130326_102200
```
Issue the cpdumps command to copy dump files to the configuration node.
If the /dumps directory on the configuration node becomes full before the copy completes, no message is returned. To avoid this scenario, clear the /dumps directory before migrating data to the configuration node
To copy drive dump files from the specified node to the configuration node, issue this command: cpdumps -prefix /dumps/drive node_id | node_name
To show the copied drive dumps on the configuration node, issue this command: lsdumps -prefix /dumps/drive:
```
mcrsvt9a:superuser>lsdumps -prefix /dumps/drive
id filename 
0  drivedump_7802207-1_20_130326_110053 
1  drivedump_7802113-1_225_130326_110333 
```
To delete all files from the /dumps directory and all subdirectories on the specified node, issue this command: cleardumps -prefix /dumps node_id | node_name
To delete files from a subdirectory of /dumps only, specify the -prefix parameter.
To delete drive dump files from the specified node, issue this command: cleardumps -prefix /dumps/drive node_id|node_name node_id | node_name

The dump file can be created on a node other than the configuration node if:

The drive is connected to a node in a different I/O group
Connectivity to the node is not complete at the time of the dump

The command feedback indicates on which node the dump appears. If the dump appears on the configuration node you do not have to copy the dump information to the configuration node.