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Xref: sserve comp.os.386bsd.questions:6087 comp.os.386bsd.bugs:1627 Path: sserve!newshost.anu.edu.au!munnari.oz.au!spool.mu.edu!agate!darkstar.UCSC.EDU!cats.ucsc.edu!buhrow From: buhrow@cats.ucsc.edu (Brian Buhrow) Newsgroups: comp.os.386bsd.questions,comp.os.386bsd.bugs Subject: NETBSD 0.9 SPONTANEOUSLY REBOOTS WHEN DOING A LOT OF NFS READS Date: 20 Oct 1993 20:28:36 GMT Organization: University of California, Santa Cruz Lines: 23 Message-ID: <2a471k$shn@darkstar.UCSC.EDU> NNTP-Posting-Host: hobbes.ucsc.edu Keywords: Heavy reading, NFS, reboot Hello fellow NetBSD people. I have a bug which manifests itself when doing large reads from nfs mounted file systems. If you do a lot of fast reading from a file on an nfs mounted file system, the netBSD system will spontaneously reboot. I cannot figure out exactly what is going on, though I believe that the syslog message saying: hostname/netbsd: mb_map full which appears anywhere from 3 seconds to three minutes before the reboot might give a clue to the problem. Note that it seems to happen only on large individual files, not on a lot of reads from a set of different files. I'm using a netbsd-0.9a (current) kernel dated October 9, 1993. It contains the nfs read-ahead patches. This bug predates those patches. The system is running on a 386DX/25 with 8MB of memory. Any suggestions, patches, or ways of tracking the problem further would be most useful. Please mail responses to: buhrow@cats.ucsc.edu as I do not have time to read news groups extensively. -Brian