Posts tagged softwareraid

mdadm cheatsheet

posted on 2016-03-29 07:44

Since I have had too like this crap up one time too often...

# create new multiple device disk
mdadm --create MD_DEV options...
    -l1 -n2 --metadata=0.90 DEV1 DEV2

# assemble previously created multiple device disk
mdadm --assemble MD_DEV options...
    --scan / -s
    --run / -R
    --force / -f
    --update=? / -U
    --readonly / -o

# similar to --create, but...
mdadm --build MD_DEV options...
    DO NOT USE ANYMORE

# bread and butter command
mdadm --manage MD_DEV options...
    --add / -a
    --re-add
    --remove / -r
    --fail / -f
    --replace
    --run / -R
    --stop / -S
    --readonly / -o
    --readwrite / -w

# also bread and butter command
mdadm --misc options... DEVICES
    --query / -Q    (MD_DEV)
    --detail / -D   (MD_DEV)
    --examine / -E  (DEV)
    --examine-bitmap / -X (DEV)
    --run / -R 
    --stop / -S
    --readonly / -o
    --readwrite / -w
    --test / -t
    --wait / -w
    --zero-superblock (DEV)

# havent used these yet
mdadm --grow options device
mdadm --incremental device
mdadm --monitor options...

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