Mount an ISO image on a Solaris filesystem with lofiadm
Posted by Rex in Solaris system administration
Many software packages can be downloaded in the form of an ISO image. Rather than burning the image to a CD-ROM to access its contents, it is easy to mount the image directly into the filesystem using the lofiadm and mount commands.
Given an ISO image in /export/temp/software.iso, a loopback file device (/dev/lofi/1) is created with the following command:
lofiadm -a /export/temp/software.iso /dev/lofi/1
The lofi device creates a block device version of a file. This block device can be mounted to /mnt with the following command:
mount -F hsfs -o ro /dev/lofi/1 /mnt
These commands can be combined into a single command:
mount -F hsfs -o ro `lofiadm -a /export/temp/software.iso` /mnt
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October 16, 2009 at 7:52 pm, FMan said:
How about how to place this in /etc/vfstab
December 04, 2010 at 5:51 am, Michael said:
thank you
June 01, 2011 at 12:51 pm, Lucien Hercaud said:
mkdir -p /etc/fs/isofile
cd /etc/fs/isofile
# Create the files “mount” and umount with contents below
# mount
#!/bin/bashif [[ X"$1" = X ]]then echo isofile usage: mount -F isofile file.iso directory exit 32else _iso=$1 shiftfiif [[ X"$1" = X ]]then echo isofile usage: mount -F isofile file.iso directory exit 32else _dir=$1 shiftfi
[[ ! -r "$_iso" ]] &[[ ! -d "$_dir" ]] &exec /usr/sbin/mount -F hsfs $(/usr/sbin/lofiadm -a $_iso) $_dir# umount
#!/bin/bashif [[ X"$1" = X ]]then echo isofile usage: umount ‘{special | mount-point | isofile}’ exit 32fi
if [[ -d $1 ]]then _lofi=$(/usr/sbin/mount | nawk -v _d=$1 ‘{ if ($1==_d) print $3}’) /etc/fs/isofile/_umount $1 && /usr/sbin/lofiadm -d $_lofi exit $?elif [[ -L $1 ]]then case $1 in /dev/lofi/*) _lofi=$1 _dir=$(/usr/sbin/mount | nawk -v _l=$1 ‘{ if ($3==_l) print $1}’) /etc/fs/isofile/_umount $_dir && /usr/sbin/lofiadm -d $1 ;; *) /etc/fs/isofile/_umount $1 esacelif [[ -f $1 ]] && [[ -s $1 ]]then _lofi=$(/usr/sbin/lofiadm $1 2>/dev/null) [[ X"$_lofi" = X ]] & _dir=$(/usr/sbin/mount | nawk -v _l=$_lofi ‘{ if ($3==_l) print $1}’) /etc/fs/isofile/_umount $_dir && /usr/sbin/lofiadm -d $1else echo isofile ERROR: No such file, mount-point or lofi device $1 exit 33fi# compile the file below as: ”gcc -m32 -o _umount _umount.c”
#include #include main(int ac, char *av[]){ int r; r=umount(av[1]); if (-1 ==r) { perror(“umount”); exit(33); } exit(0);}
# Then use it as :
# mount -F isofile /jumpstart/isos/sol-10-u9-ga-x86-dvd.iso /mnt
# /etc/fs/isofile/umount /jumpstart/isos/sol-10-u9-ga-x86-dvd.iso
June 01, 2011 at 12:54 pm, Lucien Hercaud said:
Hmmm … the lines did not wrap up
Here it is again :
mkdir -p /etc/fs/isofilecd /etc/fs/isofile# Create the files “mount” and “umount” with the contents below### mount:#!/bin/bashif [[ X"$1" = X ]]thenecho isofile usage: mount -F isofile file.iso directoryexit 32else_iso=$1shiftfiif [[ X"$1" = X ]]thenecho isofile usage: mount -F isofile file.iso directoryexit 32else_dir=$1shiftfi[[ ! -r "$_iso" ]] &[[ ! -d "$_dir" ]] &exec /usr/sbin/mount -F hsfs $(/usr/sbin/lofiadm -a $_iso) $_dir### umount:#!/bin/bashif [[ X"$1" = X ]]thenecho isofile usage: umount ‘{special | mount-point | isofile}’exit 32fiif [[ -d $1 ]]then_lofi=$(/usr/sbin/mount | nawk -v _d=$1 ‘{ if ($1==_d) print $3}’)/etc/fs/isofile/_umount $1 && /usr/sbin/lofiadm -d $_lofiexit $?elif [[ -L $1 ]]thencase $1 in/dev/lofi/*)_lofi=$1_dir=$(/usr/sbin/mount | nawk -v _l=$1 ‘{ if ($3==_l) print $1}’)/etc/fs/isofile/_umount $_dir && /usr/sbin/lofiadm -d $1;;*)/etc/fs/isofile/_umount $1esacelif [[ -f $1 ]] && [[ -s $1 ]]then_lofi=$(/usr/sbin/lofiadm $1 2>/dev/null)[[ X"$_lofi" = X ]] &_dir=$(/usr/sbin/mount | nawk -v _l=$_lofi ‘{ if ($3==_l) print $1}’)/etc/fs/isofile/_umount $_dir && /usr/sbin/lofiadm -d $1elseecho isofile ERROR: No such file, mount-point or lofi device $1exit 33fi### compile the file below as: “gcc -m32 -o _umount _umount.c”### _umount.c:#include #include main(int ac, char *av[]){int r;r=umount(av[1]);if (-1 ==r) {perror(“umount”);exit(33);}exit(0);}### Then use it as :# mount -F isofile /jumpstart/isos/sol-10-u9-ga-x86-dvd.iso /mnt# /etc/fs/isofile/umount /jumpstart/isos/sol-10-u9-ga-x86-dvd.iso### Can also be added to /etc/vfstab as :/jumpstart/isos/sol-10-u8-ga-x86-dvd.iso – /mnt isofile – yes -### To totally unmount and free the lofi device, please always care to use the “/etc/fs/isofile/umount” command
March 20, 2012 at 8:11 am, ashrayer said:
Thanks, it is really helpful;)