rhpkg/dracut/dracut-049-build/dracut-049/modules.d/45url-lib
~~~
<SNIP>
121 nfs_already_mounted() {
122 local server="$1" path="$2" localdir="" s="" p=""
123 cat /proc/mounts | while read src mnt rest || [ -n "$src" ]; do
124 splitsep ":" "$src" s p
125 if [ "$server" = "$s" ]; then
126 ¦ if [ "$path" = "$p" ]; then
127 ¦ echo $mnt
128 ¦ elif str_starts "$path" "$p"; then
129 ¦ echo $mnt/${path#$p/}
130 ¦ fi
131 fi
132 done
133 }
134 
135 nfs_fetch_url() {
136 local url="$1" outloc="$2" nfs="" server="" path="" options=""
137 nfs_to_var "$url" || return 255
138 local filepath="${path%/}" filename="${path##/}" mntdir=""
139 
140 # skip mount if server:/filepath is already mounted
141 mntdir=$(nfs_already_mounted "$server" "$path")
142 if [ -z "$mntdir" ]; then
143 local mntdir="$(mkuniqdir /run nfs_mnt)"
144 mount_nfs "$nfs:$server:$filepath${options:+:$options}" "$mntdir"
145 # lazy unmount during pre-pivot hook
146 inst_hook -hook pre-pivot --name 99url-lib-umount-nfs"$(basename "$mntdir")" umount -l – "$mntdir"
147 fi
148 
149 if [ -z "$outloc" ]; then
150 outloc="$mntdir/$filename"
151 else
152 cp -f – "$mntdir/$filename" "$outloc" || return $?
153 fi
154 [ -f "$outloc" ] || return 253
155 if [ -z "$2" ]; then echo "$outloc" ; fi
156 } 
<SNIP>
~~~
99base/dracut-lib.sh
~~~
44 # returns OK if $1 contains literal string $2 at the beginning, and isn't empty
45 str_starts() {
46 [ "${1#"$2"*}" != "$1" ]
47 }
~~~

~~~
<SNIP>
[ 1875.581917] dracut-initqueue[875]: //lib/url-lib.sh@22(fetch_url): local url=nfs:vers=3:172.25.114.43:/opt_repo/TFDM/config_t2501a20/kickstart/tfdm.ks outloc=/tmp/ks.cfg
<SNIP>
[ 1875.582494] dracut-initqueue[875]: //lib/url-lib.sh@26(fetch_url): nfs_fetch_url nfs:vers=3:172.25.114.43:/opt_repo/TFDM/config_t2501a20/kickstart/tfdm.ks /tmp/ks.cfg
[ 1875.582526] dracut-initqueue[875]: //lib/url-lib.sh@136(nfs_fetch_url): local url=nfs:vers=3:172.25.114.43:/opt_repo/TFDM/config_t2501a20/kickstart/tfdm.ks outloc=/tmp/ks.cfg nfs= server= path= options=
###
Here we call the nfs_to_var function on code #137
###
[ 1875.582558] dracut-initqueue[875]: //lib/url-lib.sh@137(nfs_fetch_url): nfs_to_var nfs:vers=3:172.25.114.43:/opt_repo/TFDM/config_t2501a20/kickstart/tfdm.ks
<SNIP>
[ 1875.582705] dracut-initqueue[875]: //lib/nfs-lib.sh@80(anaconda_nfs_to_var): nfs=nfs
[ 1875.582855] dracut-initqueue[875]: //lib/nfs-lib.sh@83(anaconda_nfs_to_var): server= 172.25.114.43
[ 1875.582901] dracut-initqueue[875]: //lib/nfs-lib.sh@84(anaconda_nfs_to_var): options=vers=3
[ 1875.582932] dracut-initqueue[875]: //lib/nfs-lib.sh@85(anaconda_nfs_to_var): path=/opt_repo/TFDM/config_t2501a20/kickstart/tfdm.ks
<SNIP>
[ 1875.583112] dracut-initqueue[875]: //lib/nfs-lib.sh@25(nfs_to_var): strstr /opt_repo/TFDM/config_t2501a20/kickstart/tfdm.ks %s
[ 1875.583143] dracut-initqueue[875]: //lib/dracut-lib.sh@27(strstr): '[' /opt_repo/TFDM/config_t2501a20/kickstart/tfdm.ks '!=' /opt_repo/TFDM/config_t2501a20/kickstart/tfdm.ks ']'
[ 1875.714789] dracut-initqueue[875]: //lib/url-lib.sh@138(nfs_fetch_url): local filepath=/opt_repo/TFDM/config_t2501a20/kickstart filename=tfdm.ks mntdir=
###
Now so far the variable values are looking good, we have reached line 140 in code lines
Variables server & path are populated to contain IP and the complete path.
140 # skip mount if server:/filepath is already mounted
141 mntdir=$(nfs_already_mounted "$server" "$path")
###
[ 1875.714930] dracut-initqueue[7858]: ///lib/url-lib.sh@141(nfs_fetch_url): nfs_already_mounted 172.25.114.43 /opt_repo/TFDM/config_t2501a20/kickstart/tfdm.ks
[ 1875.714984] dracut-initqueue[7858]: ///lib/url-lib.sh@122(nfs_already_mounted): local server= 172.25.114.43 path=/opt_repo/TFDM/config_t2501a20/kickstart/tfdm.ks localdir= s= p=
[ 1875.715094] dracut-initqueue[7859]: ///lib/url-lib.sh@123(nfs_already_mounted): cat /proc/mounts
[ 1875.715234] dracut-initqueue[7860]: ///lib/url-lib.sh@123(nfs_already_mounted): read src mnt rest
###
After checking multiple mounts and exiting with result code 0, finally it finds the server match on a mount and then compares path string 
###
[ 1876.046026] dracut-initqueue[7860]: ///lib/url-lib.sh@123(nfs_already_mounted): read src mnt rest
[ 1876.046056] dracut-initqueue[7860]: ///lib/url-lib.sh@124(nfs_already_mounted): splitsep : 172.25.114.43 
:/opt_repo/RHEL_8/TFDM_CAS/ s p
[ 1876.324792] dracut-initqueue[7860]: ///lib/dracut-lib.sh@392(splitsep): debug_off
[ 1876.324832] dracut-initqueue[7860]: ///lib/dracut-lib.sh@18(debug_off): set +x
[ 1876.324867] dracut-initqueue[7860]: ///lib/dracut-lib.sh@405(splitsep): return 0
[ 1876.324905] dracut-initqueue[7860]: ///lib/url-lib.sh@125(nfs_already_mounted): '[' 172.25.114.43 = 172.25.114.43 ']'
[ 1876.324939] dracut-initqueue[7860]: ///lib/url-lib.sh@126(nfs_already_mounted): '[' /opt_repo/TFDM/config_t2501a20/kickstart/tfdm.ks = /opt_repo/RHEL_8/TFDM_CAS/ ']'
[ 1876.325007] dracut-initqueue[7860]: ///lib/url-lib.sh@128(nfs_already_mounted): str_starts /opt_repo/TFDM/config_t2501a20/kickstart/tfdm.ks /opt_repo/RHEL_8/TFDM_CAS/
[ 1876.325056] dracut-initqueue[7860]: ///lib/dracut-lib.sh@46(str_starts): '[' /opt_repo/TFDM/config_t2501a20/kickstart/tfdm.ks '!=' /opt_repo/TFDM/config_t2501a20/kickstart/tfdm.ks ']'
[ 1876.325092] dracut-initqueue[7860]: ///lib/url-lib.sh@123(nfs_already_mounted): read src mnt rest 
###
Loop continues due to mismatched path though same IP
###
<SNIP>
[ 1876.325355] dracut-initqueue[7860]: ///lib/url-lib.sh@123(nfs_already_mounted): read src mnt rest
[ 1876.325409] dracut-initqueue[7860]: ///lib/url-lib.sh@124(nfs_already_mounted): splitsep : 172.25.114.43
:/opt_repo/TFDM/config_t2501a20/kickstart s p
[ 1876.325439] dracut-initqueue[7860]: ///lib/dracut-lib.sh@392(splitsep): debug_off
[ 1876.325529] dracut-initqueue[7860]: ///lib/dracut-lib.sh@18(debug_off): set +x
[ 1876.325561] dracut-initqueue[7860]: ///lib/dracut-lib.sh@405(splitsep): return 0
[ 1876.325591] dracut-initqueue[7860]: ///lib/url-lib.sh@125(nfs_already_mounted): '[' 172.25.114.43 = 172.25.114.43 ']'
[ 1876.325620] dracut-initqueue[7860]: ///lib/url-lib.sh@126(nfs_already_mounted): '[' /opt_repo/TFDM/config_t2501a20/kickstart/tfdm.ks = /opt_repo/TFDM/config_t2501a20/kickstart ']'
###
Since the path is not exact match the code follows str_starts function again followed by echo (which I am struggling to make sense of) 
128 ¦ elif str_starts "$path" "$p"; then
129 ¦ echo $mnt/${path#$p/}
###
[ 1876.325664] dracut-initqueue[7860]: ///lib/url-lib.sh@128(nfs_already_mounted): str_starts /opt_repo/TFDM/config_t2501a20/kickstart/tfdm.ks /opt_repo/TFDM/config_t2501a20/kickstart
[ 1876.325694] dracut-initqueue[7860]: ///lib/dracut-lib.sh@46(str_starts): '[' /tfdm.ks '!=' /opt_repo/TFDM/config_t2501a20/kickstart/tfdm.ks ']'
[ 1876.325723] dracut-initqueue[7860]: ///lib/url-lib.sh@129(nfs_already_mounted): echo /run/nfs_mnt0/tfdm.ks
<SNIP>
###
Here we get the mntdir set and then the wrong path issue highlighted by Juanma 
###
[ 1876.325863] dracut-initqueue[875]: //lib/url-lib.sh@141(nfs_fetch_url): mntdir=/run/nfs_mnt0/tfdm.ks
[ 1876.325934] dracut-initqueue[875]: //lib/url-lib.sh@142(nfs_fetch_url): '[' -z /run/nfs_mnt0/tfdm.ks ']'
[ 1876.325966] dracut-initqueue[875]: //lib/url-lib.sh@149(nfs_fetch_url): '[' -z /tmp/ks.cfg ']'
[ 1876.325997] dracut-initqueue[875]: //lib/url-lib.sh@152(nfs_fetch_url): cp -f – /run/nfs_mnt0/tfdm.ks/tfdm.ks /tmp/ks.cfg
[ 1876.326147] dracut-initqueue[7861]: cp: cannot stat '/run/nfs_mnt0/tfdm.ks/tfdm.ks': Not a directory
[ 1876.326249] dracut-initqueue[875]: //lib/url-lib.sh@152(nfs_fetch_url): return 1
[ 1876.326296] dracut-initqueue[875]: //lib/dracut/hooks/initqueue/fetch-ks-eno1.sh@16(source): warn 'anaconda: failed to fetch kickstart from nfs:vers=3:172.25.114.43:/opt_repo/TFDM/config_t2501a20/kickstart/tfdm.ks'
[ 1876.326360] dracut-initqueue[875]: //lib/dracut-lib.sh@79(warn): echo 'Warning: anaconda: failed to fetch kickstart from nfs:vers=3:172.25.114.43:/opt_repo/TFDM/config_t2501a20/kickstart/tfdm.ks'
~~~

~~~
152 cp -f – "$mntdir/$filename" "$outloc" || return $?
~~~