
Cheat sheet
mdadm cheat sheet
Linux software RAID with mdadm: create arrays, read /proc/mdstat, replace a failed disk, grow or change level, assemble after problems, and set up monitoring.
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- mdadm
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Cheat sheet
Linux software RAID with mdadm: create arrays, read /proc/mdstat, replace a failed disk, grow or change level, assemble after problems, and set up monitoring.

Cheat sheet
Software RAID with mdadm and the hardware RAID CLIs (storcli, perccli, ssacli): create arrays, check health, replace a failed disk, rebuild and monitor.

Cheat sheet
Check space, find what fills a disk, inspect block devices, mount filesystems, edit fstab safely and grow LVM volumes and partitions online.

Cheat sheet
Why a Linux disk says it's full and how to fix it: find what uses the space, free space held by deleted files that are still open, and fix running out of inodes.