On Mar 27, 2008, at 7:52 AM, RPN01 wrote:

I'll start with the second part first, and even with a rant, at
that: VMWare
doesn't work for Linux. If you put a Linux system on a heavily used
VMWare
box, VMWare can't complete the Linux I/O quickly enough, Linux
detects the
timeout, and places the filesystem in a read-only state. There is no
solution if you want to stay within your standard Linux
distribution. VMWare
does have a disk driver that is supposed to work, but the only
change is
that they greatly increased the disk I/O timeout, and installing it
means
headaches when you later want to apply maintenance to your Linux
system.

If this is happening, you have too many virtual machine images, and
likely too little memory, on your VMware host.  Essentially,
oversubscribing I/O bandwidth *or* real memory (note: very different
from z/VM there) is a bad idea on most VMware machines.

It's not that VMware doesn't work for Linux, as much as it is, VMware
(and x86 boxes) cannot scale to the kind of density those of us in the
z/VM world expect as a matter of course.

Adam

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