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mdadm [2016/04/29 12:17] steve |
mdadm [2016/04/29 12:28] steve |
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| When ''mdadm'' is started building / rebuilding an array, it will create ''/dev/mdX'' entries, and remove the block devices that are part of the RAID (/dev/sda1, /dev/sdb1, fex). After stopping mdadm, run partprobe to load the device nodes. It will restart mdadm, but stopping it the second time will leave the device blocks there. | When ''mdadm'' is started building / rebuilding an array, it will create ''/dev/mdX'' entries, and remove the block devices that are part of the RAID (/dev/sda1, /dev/sdb1, fex). After stopping mdadm, run partprobe to load the device nodes. It will restart mdadm, but stopping it the second time will leave the device blocks there. | ||
| + | |||
| + | === Examples === | ||
| + | |||
| + | From the man page. | ||
| + | |||
| + | Query the device to see if it's a RAID array, or part of one, etc.: | ||
| + | |||
| + | <code> | ||
| + | mdadm --query device | ||
| + | </code> | ||
| + | |||
| + | Scan the config file and assemble and start all arrays: | ||
| + | |||
| + | <code> | ||
| + | mdadm --assemble --scan | ||
| + | </code> | ||
| + | |||
| + | Shut down all arrays that can be shut down; not currently in use: | ||
| + | |||
| + | <code> | ||
| + | mdadm --stop --scan | ||
| + | </code> | ||
| + | |||
| + | Check devices that have RAID superblocks and print out results: | ||
| + | |||
| + | <code> | ||
| + | mdadm --examine --brief --scan --config=partitions | ||
| + | </code> | ||
