Print Page - All filesystems mounted in proper order at boot

Well, I suspect - hope - that it is easy enough to do by changing the order in /etc/filesystems. I'll have to install a test system to verify, but that may be enough.

A second option might be to change an option in the filesystem you want mounted first (/oracle/P25). You code try:

With all /oracle/P25 filesystems unmounted remove all the subdirectories that exist in the /oracle/P25 directory. Now none of the sub-directory mounts will work until /oracle/P25 is mounted - and only /oracle/P25 gets mounted. To make this even more "pretty" set all the other filesystems to non-auto mount. Use: for each of the /oracle/P25 subdirectories....

# chfs -A no /oracle/P25/mirrlogB # etc.'

Make sure that /oracle/P25 is still automount (chfs -A yes /oracle/P25).

Some study of the init process ....
The processing of automounts is initiated by the rc line in /etc/inittab: Anything you add after this will process later.
init:2:initdefault: brc::sysinit:/sbin/rc.boot 3 >/dev/console 2>&1 # Phase 3 of system boot powerfail::powerfail:/etc/rc.powerfail 2>&1 | alog -tboot > /dev/console # Power Failure D etection load64bit:2:wait:/etc/methods/cfg64 >/dev/console 2>&1 # Enable 64-bit execs tunables:23456789:wait:/usr/sbin/tunrestore -R > /dev/console 2>&1 # Set tunables rc:23456789:wait:/etc/rc 2>&1 | alog -tboot > /dev/console # Multi-User checks ... more stuff follows

In /etc/rc the lines we are interested in are:

# Varyon all Volume Groups marked as auto-varyon. # ( rootvg already varied on) dspmsg rc.cat 2 ' Performing auto-varyon of Volume Groups \n' cfgvg ..... more info .... # Perform all auto mounts dspmsg rc.cat 4 ' Performing all automatic mounts \n' # Remove the file 'fs1.$$' if it already exists rm -f /tmp/fs1.$$ # handle the egrep line carefully: between each pair of brackets is a tab # followed by a space, and the tab may get lost if you copy and paste the line egrep -vp "^[ ]*vfs[ ]*=[ ]*(cachefs|nfs)[ ]*$" \ /etc/filesystems > /tmp/fs1.$$ mount /tmp/fs1.$$ /etc/filesystems mount all umount /etc/filesystems rm -f /tmp/fs1.$$

Summary: Two basic choices: either:

Edit /etc/filesystems to change the order. Note this will need to be done (again) anytime importvg is done.

Change the sub-directories to no automount (and clean up the /oracle/P25 directory (mountpoint) so that when /oracle/P25 is not mounted, none of the subdirectories exist. Next create a new script, perhaps add both a S and a K script is /etc/rc.d/rc2.d directory to finish the automounts and also start the application. Or, add a new entry in /etc/inittab and position it after the rc: line, but before the entry that starts the application.

My apologies, if there is a bit of wandering around in this answer - but I hope it provides enough information for you to decide on your solution. Do keep us updated on your solution!

ROOTVG

AIX => Administration => Topic started by: jasdeepsingh_07 on June 19, 2008, 08:06:52 AM