lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Mon, 20 Nov 2006 12:07:50 +0100 From: Christoph Pleger <Christoph.Pleger@...-dortmund.de> To: linux-kernel@...r.kernel.org Subject: Re: NFSROOT with NFS Version 3 Hello, On Fri, 17 Nov 2006 11:20:17 -0500 Trond Myklebust <trond.myklebust@....uio.no> wrote: > On Fri, 2006-11-17 at 16:40 +0100, Christoph Pleger wrote: > > Hello, > > > > I tried to switch an NFSROOT-Environment from NFS version 2 to NFS > > version 3, but unfortunately my test client machine now hangs every > > time after booting as soon as some bigger file system activity > > should occur. I tried Kernel 2.6.14.7 and Kernel 2.6.16.32. > > > > The problem did not occur with NFS version 2. > > > > Does anybody know the problem and/or a solution? > > That is almost always due to the difference in r/wsize that the Linux > NFS server advertises for v2 and v3 combined with using UDP. If you > have poor networking, then don't use UDP, and certainly not with 32k > r/wsize. > > IOW: try either setting the mount options "rsize=8192,wsize=8192", or > the option "proto=tcp" No, that was not the problem. I tried it, bit it did not help. Later, I noticed the following message that appeared during the boot process: Warning: Unable to open an initial console So, on the NFS server, I made a copy of the NFSROOT-Directory, exported the copy read-write (the original is exported read-only) and used the copy as NFSROOT for the client. And now the client works well. But now I have two questions: 1. Why did the problem not occur with NFS version 2? On the client, /dev/console should have been read-only with version 2 as well. 2. What can I do to get a "real" solution? Exporting the original NFSROOT read-write is not possible for me. Regards Christoph Pleger - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists