Date: Wed, 14 Apr 1999 12:08:20 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: Bob Bishop <rb@gid.co.uk> Cc: current@FreeBSD.ORG Subject: Re: NFS, blocks of NULLs in files Message-ID: <199904141908.MAA32003@apollo.backplane.com> References: <l0302091bb33a825a2e1e@[194.32.164.2]>
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:Hi,
:
:I'm getting the 'blocks of NULLs in NFS-mounted files' problem repeatably
:with last night's -current (cvsup'd at Wed Apr 14 04:02:34 BST 1999)
:running both on server and client (except that the client's kernel is 24hrs
:older than that).
:
:It happens during a kernel build on the client, so both the sources and
:objects are being accessed via NFS. During the 'generating linker set
:emulation glue for ELF' phase, a lot of the .o's turn up with blocks of
:NULLs. The rest of the world builds fine, but /usr/obj is local so there is
:little or no NFS writing going on in that case.
:
:The client is SMP but it's been doing daily builds with -j8 since that got
:sorted out, and anyway it now fails in exactly the same way whether -j is
:used or not.
:
:
:--
:Bob Bishop (0118) 977 4017 international code +44 118
:rb@gid.co.uk fax (0118) 989 4254 between 0800 and 1800 UK
I've been working on this for the last few days. I should have an
experiemental fix today. I'll post to current & hackers when it's ready.
The problem is related to the mmap fixes which went in a few days ago.
These fixes brought out yet another bug in NFS. The mmap fixes themselves
are correct.
-Matt
Matthew Dillon
<dillon@backplane.com>
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