MDMON(8) System Manager's Manual MDMON(8) (NAME) mdmon - MD (SYNOPSIS) mdmon [--all] [--takeover] [--foreground] CONTAINER (OVERVIEW) .. . . << >> (clean-to-dirty transitions) . . (DESCRIPTION) (Metadata updates): mdmon . Mdmon sysfs array_state sync_action state (poll) . . : array_state - inactive (dirty bit) array_state - write pending array_state active. active . array_state - active-idle clean array_state - clean array_state - read-only . mdmon : 1/ read-auto (resync) 2/ active 3/ read-only "external:/dev/md127" "external:-dev/md127" sync_action - resync-to-idle . (idle) (checkpoint) . sync_action - recover-to-idle (spare) . "out-of-sync" () (degraded) . . /state - faulty . . <<+>> (+removed) . . + : MD mdadm --remove . mdadm --remove . (Containers): DDF MD . MD : RAID . RAID MD . . mdmon . . : "mdadm: Cannot remove disks from a 'member' array, perform this operation on the parent container" /proc/mdstat "external:" . "external://" "external:-/" . (OPTIONS) CONTAINER container () . /dev/md/container md md127 . --foreground mdmon (fork) . mdmon . --takeover mdmon mdmon . mdmon initramfs . initramfs pid sock mdmon . --all mdmon . --takeover . mdmon --all () . --all-active-arrays. mdmon mdadm RAID . mdadm . (START UP AND SHUTDOWN) mdmon mdmon . mdmon (unclean shutdown). initramfs mdadm mdmon . mdmon initramfs ( tmpfs) mdmon .pid .sock . mdmon /run/mdadm . . ( pivot_root) mdmon --all --takeover mdmon initramfs initramfs . mdmon (kill ). ( ) /dev ( ) /dev (unmount) . (EXAMPLES) mdmon --all-active-arrays --takeover mdmon . initramfs mdmon initramfs initramfs . (SEE ALSO) mdadm(8), md(4). v4.6 MDMON(8)