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#!/usr/bin/env bash
get_devtype() {
local typ
typ=$(udevadm info --query=property --name="$1" | grep "^ID_FS_TYPE=" | sed 's|^ID_FS_TYPE=||')
if [ "$typ" = "" ] ; then
typ=$(blkid -c /dev/null "$1" -o value -s TYPE)
fi
echo "$typ"
}
get_pool_devices() {
# also present in 99zfssystemd
local poolconfigtemp
local poolconfigoutput
local pooldev
local prefix
local resolved
poolconfigtemp=`mktemp`
@sbindir@/zpool list -v -H -P "$1" > "$poolconfigtemp" 2>&1
if [ "$?" != "0" ] ; then
poolconfigoutput=$(cat "$poolconfigtemp")
dinfo "zfsexpandknowledge: pool $1 cannot be listed: $poolconfigoutput"
else
cat "$poolconfigtemp" | awk -F '\t' '/\t\/dev/ { print $2 }' | \
while read pooldev ; do
if [ -n "$pooldev" -a -e "$pooldev" ] ; then
if [ -h "$pooldev" ] ; then
resolved=`readlink -f "$pooldev"`
else
resolved="$pooldev"
fi
dinfo "zfsexpandknowledge: pool $1 has device $pooldev (which resolves to $resolved)"
echo "$resolved"
fi
done
fi
rm -f "$poolconfigtemp"
}
find_zfs_block_devices() {
local dev
local blockdev
local mp
local fstype
local pool
local key
local n
local poolconfigoutput
numfields=`head -1 /proc/self/mountinfo | awk '{print NF}'`
if [ "$numfields" == "10" ] ; then
fields="n n n n mp n n fstype dev n"
else
fields="n n n n mp n n n fstype dev n"
fi
while read $fields ; do
if [ "$fstype" != "zfs" ]; then continue ; fi
if [ "$mp" == "$1" ]; then
pool=$(echo "$dev" | cut -d / -f 1)
get_pool_devices "$pool"
fi
done < /proc/self/mountinfo
}
array_contains () {
local e
for e in "${@:2}"; do [[ "$e" == "$1" ]] && return 0; done
return 1
}
check() {
local mp
local dev
local blockdevs
local fstype
local majmin
local _depdev
local _depdevname
local _depdevtype
local _depmajmin
local _dev
if [[ $hostonly ]]; then
for mp in \
"/" \
"/etc" \
"/bin" \
"/sbin" \
"/lib" \
"/lib64" \
"/usr" \
"/usr/bin" \
"/usr/sbin" \
"/usr/lib" \
"/usr/lib64" \
"/boot";
do
mp=$(readlink -f "$mp")
mountpoint "$mp" >/dev/null 2>&1 || continue
blockdevs=$(find_zfs_block_devices "$mp")
if [ -z "$blockdevs" ] ; then continue ; fi
dinfo "zfsexpandknowledge: block devices backing ZFS dataset $mp: $blockdevs"
for dev in $blockdevs
do
array_contains "$dev" "${host_devs[@]}" || host_devs+=("$dev")
fstype=$(get_devtype "$dev")
host_fs_types["$dev"]="$fstype"
majmin=$(get_maj_min "$dev")
if [[ -d /sys/dev/block/$majmin/slaves ]] ; then
for _depdev in /sys/dev/block/$majmin/slaves/*; do
[[ -f $_depdev/dev ]] || continue
_depdev=/dev/$(basename "$_depdev")
_depdevname=$(udevadm info --query=property --name="$_depdev" | grep "^DEVNAME=" | sed 's|^DEVNAME=||')
_depdevtype=$(get_devtype "$_depdevname")
_depmajmin=$(get_maj_min "$_depdevname")
dinfo "zfsexpandknowledge: underlying block device backing ZFS dataset $mp: $_depdevname"
array_contains "$_depdevname" "${host_devs[@]}" || host_devs+=("$_depdevname")
host_fs_types["$_depdevname"]="$_depdevtype"
done
fi
done
done
for a in "${host_devs[@]}"
do
dinfo "zfsexpandknowledge: host device $a"
done
for a in "${!host_fs_types[@]}"
do
dinfo "zfsexpandknowledge: device $a of type ${host_fs_types[$a]}"
done
fi
return 1
}
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