Clustering solution for RH Linux AS and Solaris x86/AMD 64 Post: 64946

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Top Forums UNIX for Advanced & Expert Users Clustering solution for RH Linux AS and Solaris x86/AMD 64 Post 64946 by TioTony on Wednesday 2nd of March 2005 11:01:38 PM

03-03-2005

Registered User

redhat.com has a lot of the info you are looking for, just dig around the docs and whitepapers. I have not seen a firm date for the release of cluster suite or GFS but I haven't spent a lot of time looking. I would imagine it would be soon, especially for Cluster Suite.

RHAS 3.0 was right on the edge of being what I would consider an enterprise OS. RHAS 4.0 with the 2.6 kernel and a few other features have pushed it into that category for me. The best part is the OS out of the box has the features you need. You don't need to buy Veritas, OnlineJFS, mulipathing software, or anything else to make it viable.

Convincing management to go to linux is a task. I have had several discussions. I think in the next few years it will become easier. We are really just at the beginning of major acceptance of linux in the enterprise, at least for apps other then web, mail, dns, and printing.

Market survey info should give you enough info to show the trend is heading toward linux. It has scared IBM and Sun enough to adapt a linux methodology to their OSes. Solaris is opensource and know you just pay for support (sounds just like Red Hat and SuSe). AIX has some linux features like RPM.

The biggest point that comes up in coversations I have had with managment is that hardware becomes the commodity. If you are running on HP and don't like it, it's easy to switch to IBM without switching OS. You can't do that with HPUX, Solaris, or AIX.

Sooner or later Linux/opensource will be the reality.

TioTony

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LEARN ABOUT SUNOS

switch_root

SWITCH_ROOT(8)						       System Administration						    SWITCH_ROOT(8)

NAME

       switch_root - switch to another filesystem as the root of the mount tree

SYNOPSIS

       switch_root [-hV]

       switch_root newroot init [arg...]

DESCRIPTION

       switch_root moves already mounted /proc, /dev, /sys and /run to newroot and makes newroot the new root filesystem and starts init process.

       WARNING: switch_root removes recursively all files and directories on the current root filesystem.

OPTIONS

       -h, --help
	      Display help text and exit.

       -V, --version
	      Display version information and exit.

RETURN VALUE

       switch_root returns 0 on success and 1 on failure.

NOTES

       switch_root  will  fail	to  function if newroot is not the root of a mount. If you want to switch root into a directory that does not meet
       this requirement then you can first use a bind-mounting trick to turn any directory into a mount point:

	      mount --bind $DIR $DIR

SEE ALSO

       chroot(2), init(8), mkinitrd(8), mount(8)

AUTHORS

       Peter Jones <pjones@redhat.com>
       Jeremy Katz <katzj@redhat.com>
       Karel Zak <kzak@redhat.com>

AVAILABILITY

       The switch_root command is part of the util-linux package and is available from https://www.kernel.org/pub/linux/utils/util-linux/.

util-linux							     June 2009							    SWITCH_ROOT(8)