Date: Tue, 22 Apr 2008 17:55:14 -0400 From: Mike Tancsa <mike@sentex.net> To: "Arno J. Klaassen" <arno@heho.snv.jussieu.fr> Cc: stable@freebsd.org Subject: Re: nfs-server silent data corruption Message-ID: <200804222155.m3MLtoKt093783@lava.sentex.ca> In-Reply-To: <wpk5ipkaaa.fsf@heho.snv.jussieu.fr> References: <wpmyno2kqe.fsf@heho.snv.jussieu.fr> <20080421094718.GY25623@hub.freebsd.org> <wp63ubp8e0.fsf@heho.snv.jussieu.fr> <200804211537.m3LFbaZA086977@lava.sentex.ca> <wpy77650s0.fsf@heho.snv.jussieu.fr> <200804221501.m3MF1guW092221@lava.sentex.ca> <wpzlrlu6w7.fsf@heho.snv.jussieu.fr> <200804221741.m3MHfYjO092795@lava.sentex.ca> <wpabjln518.fsf@heho.snv.jussieu.fr> <200804221807.m3MI73bN092981@lava.sentex.ca> <wpk5ipkaaa.fsf@heho.snv.jussieu.fr>
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At 02:35 PM 4/22/2008, Arno J. Klaassen wrote:
> > Also, you are using ULE or the 4BSD scheduler ? I
> > still have 4BSD on the box I am testing on.
>
>Interesting, this is with ULE. I didn't really test 4BSD on this
>box (I believed those who said SMP needs ULE *and* am quite
>satisfied with overall performance). I'll try 4BSD though time
>is getting short; I promised to deliver this box next thursday but will
>still have some days for on-site testing.
I have recompiled the kernel with ULE, and it seems fine as well. I
ran 160 iterations of a 300MB file and there was no corruption. Same
process - copy a junk random file over nfs mount, unmount the nfs
mount, remount it copy it back, compare the files.
---Mike
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