Anon: Reservations less than zero?
2007-12-25 8:30:00
>Our main server (690 with 4 CPUs) when rebooting, stops and displays
>the message "Anon: Reservations less than zero". It displays this
>repeatedly and never boots. It keeps this up until we do a L1-a and boot
>it by hand.
>
>Has anyone seen this before? What is the problem and how do we get rid
>of it? We sometimes need to reboot the machine remotely and would
>prefer not to have to come in to finish the boot.
From: "Richard J. Niziak" <rickn@copley.com>
Subject: Re: Anon: Reservations less than zero?
Check your /etc/exports file.... for an entry like this:
/usr -anon-0 it should look like
/usr -anon=0
I hope that this was it...
nrd> This was fine, there was no anon in /etc
nrd> I applied the following. However, we didn't have the problem when
nrd> we brought the system down. Time will tell.
From: Stuart Mackay <stuart@tcrystal.gla.ac.uk>
Subject: Re: Anon: Reservations less than zero?
We have seen the anonymous reserved memory drop continuously and go negative on
our SPARC2 machines running SunOS 4.1.x (where x=1,2 or 3). It happened when we
ran a large memory-hungry program which made heavy use of scratch files in
/tmp. We filed a bug report and it turned out to be a bug in the tmpfs system.
To be fair, Sun were pretty quick at developing a patch and we've had no
trouble since then. I'm afraid I don't know anything about 690 servers
specifically and I don't recall having problems at boot time as you describe,
but if you are using tmpfs, I recommend patch no. 100507. I have 100507-04 but
I don't know if there is a later version fixing any extra bugs. I enclose the
top of the README below. I hope it helps.
--Begin Include--
Patch-ID# 100507-04
Keywords: tmpfs, crash, fail assertion, leaks, anonymous, tmp_rename, panic
Synopsis: SunOS 4.1.1, 4.1.2, 4.1.3: tmpfs jumbo patch
Date: 03/Sep/92
SunOS release: 4.1.1 4.1.2 4.1.3
Unbundled Product:
Unbundled Release:
Topic: fixes for several tmpfs bugs
BugId's fixed with this patch: 1038651 1091294 1089447 1083412
Architectures for which this patch is available: sun4 sun4c sun4m
Obsoleted by: SVr4
Changes incorporated in this version: 1083412
Problem Description:
These files contain bug fixes for the following bugs:
1038651: Using tmpfs ie ram /tmp can cause data initialization with
Fortran on SunOS 4.1.
1091294: tmpfs "leaks" anonymous memory
1089447: panic: tmp_rename
1083412: copying files from an nfs mounted partition to a tmpfs mount
can result in security breach
--End Include--
Cheers,
Stuart.
--------------------------------------------------------------------------------
Stuart Mackay
Internet: stuart@tcrystal.glasgow.ac.uk Voice: +44 41 339 8855 ext 6579
Chemistry Dept., Glasgow University, Glasgow, Scotland, G12 8QQ
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