confz

commit 9ef38040cc5917c2f274cf48733f13502b99fa21
parent c5498d9408169bef84899e53beab733a097adde4
Author: Jan Pobrislo <ccx@webprojekty.cz>
Date:   Sat, 18 Nov 2017 23:36:28 +0100

Find disks by IDs
Diffstat:
M
zsh-functions/confz_fs_init
 | 
45
+++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 45 insertions(+), 0 deletions(-)
diff --git a/zsh-functions/confz_fs_init b/zsh-functions/confz_fs_init
@@ -4,6 +4,20 @@
 # confz functions for dealing with filesystem and mounting
 #
 
+# smartctl -i /dev/sda | while IFS=':' read foo bar; do P '***' ${${foo:l}// /_} ${bar/# #}; done
+
+fs_smartctl_probe() {
+	(($+smartctl_probed)) && (($smartctl_probed) && return 0
+	local dev item val rest
+	typeset -g smartctl_probed
+	typeset -ga smartctl_devices
+	typeset -gA smartctl_info
+	smartctl --scan | while read dev rest; do
+		smartctl_devices+=( $dev )
+		smartctl -i $dev | while IFS=':' read item val; do smartctl_info[${dev}:${${item:l}// /_}]=${val/# #}; done
+	done
+	smartctl_probed=1
+}
 
 # helper for probing devices
 fs_blkid_probe() {
@@ -100,6 +114,37 @@ fs_parted_list() {
 	done <<<"$out"
 }
 
+# Find disks by their IDs
+confz_disk_id_check() {
+	# arguments: device device_model serial_number
+	if ! (($+vars[device] + $+vars[device_model] + $+vars[serial_number])); then
+		die "$0: requires one or more arguments: device device_model serial_number"
+	fi
+
+	do_command=( true )
+	fs_smartctl_probe
+	local device
+	local -a found
+
+	for device in $smartctl_devices; do
+		if (($+vars[device])); then
+			[[ $vars[device] != $device]] && continue
+		fi
+		if (($+vars[device_model])); then
+			[[ $vars[device_model] != $smartctl_info[${device}:device_model] ]] && continue
+		fi
+		if (($+vars[serial_number])); then
+			[[ $vars[serial_number] != $smartctl_info[${device}:serial_number] ]] && continue
+		fi
+		found+=( $device $smartctl_info[${device}:device_model] $smartctl_info[${device}:serial_number] )
+	done
+
+	(( $#found )) || die "$0: found no matching devices"
+	[[ $#found != 3 ]] || die "$0: found too many matching devices"
+	vars[device]=$found[0]
+	vars[device_model]=$found[1]
+	vars[serial_number]=$found[2]
+}
 
 # check for DOS-style MBR on device
 confz_disklabel_dos_check() {