You know, I've seen this kind of thing result from having, for example,
dns (or nis) listed before files in nsswitch.conf, and then the dns
server becomes unavailable.
right:
hosts: files dns
wrong:
hosts: dns files
Note this effect can be duplicated (when the dns server becomes
unavailable) if you have fully-qualified domain names listed in certain
configuration files and only the short name (or no name at all!) in
/etc/hosts, even if nsswitch.conf is right.
ok
r.
> -----Original Message-----
> From: Ron Foster at Baldor-IS [mailto:[EMAIL PROTECTED]
> Sent: Monday, April 07, 2008 3:11 PM
> To: [email protected]
> Subject: Re: Linux Guest recovery at Sungard not going well
>
> Peter,
>
> It bothers me that you brought up a SLES10 system that did
> not have an NFS mount and
> it still did not give you a logon prompt. The idea of setting up a
> bogus NFS server
> and forcing permission denied messages just to speed up
> processing would not help in this situation.
>
> Do you have any idea how far it is getting before you hang?
> Is it permissible for you all to "cheat" and have someone IPL
> a system at your data center and compare messages?
>
> Is it permissible to download the installation media from
> Novell and construct you a system to boot the starter system
> from? We normally use NFS, but the book says that you can
> boot the starter system from smb and non-Microsoft FTP.
> (If you
> brought laptops with you, you might be able to share the
> install media.
> I have not
> done it.)
>
> The idea about forcing Linux to not find all of it's files
> might be useful. If you could get a single user command
> prompt, it might be helpful. You would have to know which
> filesystem is on what minidisk though.
>
> Hope this helps,
> Ron
>
>
>
> Peter E. Abresch Jr. - at Pepco wrote:
> > There is only one NFS background mount and yes, we waited for 45
> > minutes but no timeout and no prompt. We do not have our
> installation
> > media up there but we do have some other Linux systems that
> we backup
> > but do not normally restore, but unfortunately they all
> have the NFS
> > background mount except for one. I might have to recover that one,
> > link some DASD, setroot, and chkconfig nfs off, and hope that my
> > problem really was NFS. I detached the osa from the vm
> guest and hoped
> > that will cause some early timeouts or failures? Nothing! I
> recovered
> > a SLES10 that does not use NFS and it IPLed fine except
> again, no prompt.
> >
> > As far as backing up, we shut all our Linux guests down, our z/VM
> > system down, deactivate z/VM, flash the DASD, activate
> z/VM, IPL, and
> > start our guest. We then back up the flashed DASD from z/OS
> using FDR Full Volume.
> >
> > Is it something in z/VM?
> >
> > Peter
> >
> >
> >
> >
> >
> > Ron Foster at Baldor-IS <[EMAIL PROTECTED]> Sent by: Linux on 390
> > Port <[email protected]>
> > 04/07/2008 04:37 PM
> > Please respond to
> > Linux on 390 Port <[email protected]>
> >
> >
> > To
> > [email protected]
> > cc
> >
> > Subject
> > Re: Linux Guest recovery at Sungard not going well
> >
> >
> >
> >
> >
> >
> > Peter,
> >
> > Did you bring a copy of your installation media?
> > Could you boot it and then look at your restored system?
> >
> > How many NFS mounts are there? Are you saying you have waited 45
> > minutes and not gotten a message indicating that one of your NFS
> > mounts has been backgrounded or timed out?
> >
> > Have you tried setting up some system with the same IP
> address as your
> > NFS server, but not running NFS.
> > That way instead of timing out, you can get something like
> connection
> > request rejected. (I forget the exact message). In some
> cases, this
> > can hurry things along.
> >
> > By the way, how did you backup and restore?
> >
> > Ron
> >
> > Peter E. Abresch Jr. - at Pepco wrote:
> >
> >> We are at Sungard performing our yearly contingency test.
> Normally we
> >> restore our Linux DASD and IPL our Linux guest as a guest from
> >> Sungard?s z/VM system. We then logon to our Linux guest from z/VM,
> >> change the network configuration, reboot, and we are good to go.
> >> Usually we have to wait 10 minutes for NFS to timeout before
> >> receiving the Linux LOGON
> >>
> > prompt
> >
> >> on the VM console. This has worked for us many times.
> >>
> >> However, this year, we never receive the LINUX logon prompt. Linux
> >> IPLs fine, everything seems ok, however, we do not receive
> the Linux
> >> logon prompt. We wait as long as 45 minutes but never see
> the prompt.
> >> Without the prompt, we cannot logon and make any changes at all?
> >>
> >> The z/VM directory used at Sungard is the same that we
> have used in
> >> previous tests. Does anyone have any ideas or suggestions.
> >>
> >> Peter
> >> This Email message and any attachment may contain
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> >>
> > copyright
> >
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> >
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> >>
> > If
> >
> >> you are not an intended recipient, or the employee or agent
> >> responsible
> >>
> > for
> >
> >> delivery of this Email to the intended recipient(s), you are hereby
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> >
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> >>
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> >
> >> prohibited. If you have received this message in error, please
> >>
> > immediately
> >
> >> notify the sender and permanently delete this Email and
> any copies.
> >> PHI policies expressly prohibit employees from making defamatory or
> >>
> > offensive
> >
> >> statements and infringing any copyright or any other legal right by
> >>
> > Email
> >
> >> communication. PHI will not accept any liability in
> respect of such
> >> communications.
> >>
> >>
> ---------------------------------------------------------------------
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> INFO LINUX-390
> >> or
> >>
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> >
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> >>
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> >>
> >
> >
> ----------------------------------------------------------------------
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> > This Email message and any attachment may contain
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> > proprietary, legally privileged, confidential and/or subject to
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> > This Email is intended solely for the use of the person(s)
> to which it
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> PHI policies
> > expressly prohibit employees from making defamatory or offensive
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> respect of such communications.
> >
> >
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>
> ----------------------------------------------------------------------
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