How to mount NFS volume at Boot time in Linux?

It seems very basic thing - however, coming from Solaris background, it was always a puzzle why Linux was not able to mount my NFS volumes the way it was mounting in Solaris. Basically, the only difference is "_netdev" keyword - which tells Linux that this device should be mounted AFTER network services are UP. To work around this, I even used a custom run-control script at /etc/rc3.d to mount it later. Now that I found "_netdev" keyword - I know that I am never going to use any workarounds for my NFS volumes. :)

[root@snet102 ~]# cat /etc/fstab
#
# /etc/fstab
# Created by anaconda on Tue Nov 13 14:06:32 2012
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/vg_rl6u3vanilla-lv_root /                       ext4    defaults        1 1
UUID=2309506a-eed6-413e-b234-0587949c3504 /boot                   ext4    defaults        1 2
/dev/mapper/vg_rl6u3vanilla-lv_swap swap                    swap    defaults        0 0
tmpfs                   /dev/shm                tmpfs   defaults        0 0
devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
sysfs                   /sys                    sysfs   defaults        0 0
proc                    /proc                   proc    defaults        0 0
##
client10:/iscsi1/nfsdata  /nfstest2             nfs     _netdev         0 0
##


[root@snet102 ~]# df -hFnfs
Filesystem            Size  Used Avail Use% Mounted on
client10:/iscsi1/nfsdata
                      2.0G   37M  1.9G   2% /nfstest2

How to mount CDROM in Linux, Solaris & HP-UX?

For Linux:

mkdir /cdrom
mount -t iso9660 -o ro /dev/cdrom /cdrom   

For Solaris:

mkdir -p /cdrom 
mount -F hsfs -o ro /dev/dsk/c0t6d0s2 /cdrom 

In Solaris, most of the time, CDROM is on target 6.

For HP-UX:

# Below is to find CDROM's path/device name
ioscan -fnC disk  
mkdir /cdrom
mount -F cdfs -o rr /dev/dsk/c0t2d0 /cdrom 

Note: Some people prefer to use "/mnt" in Solaris/Linux and some other prefer "/media" in Linux. It all depends on preference. :)

How to mount ISO file in Linux?

# ls -l CD_IMAGE.iso
-rw-r--r--    1 root     root     4030201856 May 27 11:41 CD_IMAGE.iso

# file CD_IMAGE.iso
CD_IMAGE.iso: ISO 9660 CD-ROM filesystem data

# mkdir /tmp/CDROM_IMAGE

# mount -o loop CD_IMAGE.iso /tmp/CDROM_IMAGE

# ls -l /tmp/CDROM_IMAGE
total 7940
drwxrwxr-x    6 519      games        2048 Nov  8  2006 NonRedHat
-rw-rw-r--    1 519      games        1910 Mar 29  2006 RPM-GPG-KEY
-rw-rw-r--    1 519      games        1672 Mar 22  2006 RPM-GPG-KEY.DAG
-rw-rw-r--    1 519      games        1617 Mar 22  2006 RPM-GPG-KEY.Fedora
-rw-rw-r--    1 519      games        1408 Mar 22  2006 RPM-GPG-KEY.KDE-Redhat
drwxrwxr-x    5 519      games        2048 Oct 23  2006 RedHat
-rw-rw-r--    1 519      games      284718 Jun 19  2007 ReleaseNotes.html
-r--r--r--    1 519      games        4337 Aug  2  2007 TRANS.TBL
-rw-rw-r--    1 519      games          37 Oct  4  2005 autorun.inf
drwxrwxr-x    4 519      games        2048 Jun 20  2007 documentation
-rw-rw-r--    1 519      games        1861 Jun 20  2007 dvdstart.htm
drwxrwxr-x    2 519      games        2048 Jul 12  2007 isolinux
-rwxrwxr-x    1 519      games       18944 Oct  4  2005 shelexec.exe
drwxrwxr-x    6 519      games        2048 Jun 20  2007 software
#

How to mount ISO file in Solaris?

If I have a CD/DVD image as ISO file extension, then here is the process to mount that ISO image in Solaris:

# pwd
/opt/SOLARIS_1106_IMAGE

# ls -la
total 7862084
drwxr-xr-x 2 root root 512 Jul 23 17:55 .
drwxr-xr-x 10 root sys 512 Jul 23 17:31 ..
-rw-r--r-- 1 root root 4023408640 Jul 23 16:25 SOL10_SPARC_1106.iso

# lofiadm -a /opt/SOLARIS_1106_IMAGE/SOL10_SPARC_1106.iso /dev/lofi/1

# mkdir /SOL_1106_DVD

# mount -F hsfs -o ro /dev/lofi/1 /SOL_1106_DVD

# ls -l /SOL_1106_DVD
total 915
-r--r--r-- 1 root root 6043 Nov 3 2006 Copyright
-rwxr-xr-x 1 root root 257 Nov 14 2006 installer
-r--r--r-- 1 root root 459760 Nov 3 2006 JDS-THIRDPARTYLICENSEREADME
drwxr-xr-x 9 root root 2048 Nov 14 2006 Solaris_10
#