AUR (en) - mdadm-git
https://aur.archlinux.org/packages/mdadm-gitI've flagged the package out of date because the upstream has moved to kernel.org. I had to build this package for myself anyway so I put it in AUR as mdadm-kernel.org-git.I've based the PKGBUILD on the core mdadm, since there were already a number of (old) comments about the quality of the PKGBUILD here.
mdadm(8) — Arch manual pages
https://man.archlinux.org/man/mdadm.8.enmdadm has several major modes of operation: Assemble Assemble the components of a previously created array into an active array. Components can be explicitly given or can be searched for. mdadm checks that the components do form a bona fide array, and can, on request, fiddle superblock information so as to assemble a faulty array. Build