93 lines
2.5 KiB
Bash
Executable File
93 lines
2.5 KiB
Bash
Executable File
#!/bin/sh
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#
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# Print some common lsblk values
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#
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# Any (lowercased) name symlinked to the lsblk script will be passed to lsblk
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# as one of its --output names. Here's a partial list of --output names
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# from the lsblk binary:
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#
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# Available columns (for --output):
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# NAME device name
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# KNAME internal kernel device name
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# MAJ:MIN major:minor device number
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# FSTYPE filesystem type
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# MOUNTPOINT where the device is mounted
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# LABEL filesystem LABEL
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# UUID filesystem UUID
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# RA read-ahead of the device
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# RO read-only device
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# RM removable device
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# MODEL device identifier
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# SIZE size of the device
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# STATE state of the device
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# OWNER user name
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# GROUP group name
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# MODE device node permissions
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# ALIGNMENT alignment offset
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# MIN-IO minimum I/O size
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# OPT-IO optimal I/O size
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# PHY-SEC physical sector size
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# LOG-SEC logical sector size
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# ROTA rotational device
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# SCHED I/O scheduler name
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# RQ-SIZE request queue size
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# TYPE device type
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# DISC-ALN discard alignment offset
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# DISC-GRAN discard granularity
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# DISC-MAX discard max bytes
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# DISC-ZERO discard zeroes data
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#
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# If the script is run as just 'lsblk' then print out disk size, vendor,
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# and model number.
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helpstr="
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label: Show filesystem label.
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model: Show disk model number.
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size: Show the disk capacity.
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vendor: Show the disk vendor.
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lsblk: Show the disk size, vendor, and model number."
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script="${0##*/}"
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if [ "$1" = "-h" ] ; then
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echo "$helpstr" | grep "$script:" | tr -s '\t' | cut -f 2-
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exit
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fi
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if [ "$script" = "lsblk" ] ; then
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list="size vendor model"
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else
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list=$(echo "$script" | tr '[:upper:]' '[:lower:]')
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fi
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# Sometimes, UPATH ends up /dev/(null).
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# That should be corrected, but for now...
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# shellcheck disable=SC2154
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if [ ! -b "$VDEV_UPATH" ]; then
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somepath="${VDEV_PATH}"
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else
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somepath="${VDEV_UPATH}"
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fi
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# Older versions of lsblk don't support all these values (like SERIAL).
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for i in $list ; do
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# Special case: Looking up the size of a file-based vdev can't
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# be done with lsblk.
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if [ "$i" = "size" ] && [ -f "$somepath" ] ; then
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size=$(du -h --apparent-size "$somepath" | cut -f 1)
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echo "size=$size"
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continue
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fi
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val=""
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if val=$(eval "lsblk -dl -n -o $i $somepath 2>/dev/null") ; then
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# Remove leading/trailing whitespace from value
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val=$(echo "$val" | sed -e 's/^[[:space:]]*//' \
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-e 's/[[:space:]]*$//')
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fi
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echo "$i=$val"
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done
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