From: Jeff Moyer <jmoyer-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Qiuyang Wu <Qiuyang.Wu-HKixBCOQz3hWk0Htik3J/w@public.gmane.org>
Cc: "linux-nfs\@vger.kernel.org"
<linux-nfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"linux-fsdevel\@vger.kernel.org"
<linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: pread/pwrite bug on linux?
Date: Wed, 04 Mar 2009 13:48:09 -0500 [thread overview]
Message-ID: <x49k575jf9y.fsf@segfault.boston.devel.redhat.com> (raw)
In-Reply-To: <293BC70BB130E648A6631DB2F05B6E10019D6B277E-uiPIUNf6hlr3OT/vyeh27fufCSb+aD3WLzEdoUbNIic@public.gmane.org> (Qiuyang Wu's message of "Tue, 3 Mar 2009 10:47:24 -0800")
Qiuyang Wu <Qiuyang.Wu-HKixBCOQz3hWk0Htik3J/w@public.gmane.org> writes:
> Hi Jeff,
>
> Attached the sample program. Should be able to compile as-is.
>
> Let me know your findings or need additional info.
I am not able to reproduce the problem. I tried with a RHEL 4 system,
using exactly the kernel you listed (2.6.9-55.EL) on an i386 system. I
tried against ext2, ext3, and an nfs mount exported from a RHEL 5
system. I should note that I modified your program to detect short
writes and continue instead of reporting a bogus error. I'll reiterate
that the value of errno is undefined if the library/system call did not
return -1.
I noticed that your test case used NFS. What NFS server were you using?
Can you think of any other details that might affect the test?
Thanks,
Jeff
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next prev parent reply other threads:[~2009-03-04 18:48 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <b9ec419f0903021120g62814b6embe8eeaf354f8b535@mail.gmail.com>
2009-03-02 21:53 ` pread/pwrite bug on linux? Qiuyang Wu
[not found] ` <293BC70BB130E648A6631DB2F05B6E10019D6B224C-uiPIUNf6hlr3OT/vyeh27fufCSb+aD3WLzEdoUbNIic@public.gmane.org>
2009-03-03 18:10 ` Jeff Moyer
2009-03-03 18:47 ` Qiuyang Wu
[not found] ` <293BC70BB130E648A6631DB2F05B6E10019D6B277E-uiPIUNf6hlr3OT/vyeh27fufCSb+aD3WLzEdoUbNIic@public.gmane.org>
2009-03-03 19:37 ` Trond Myklebust
2009-03-03 20:07 ` Qiuyang Wu
2009-03-04 18:48 ` Jeff Moyer [this message]
[not found] ` <x49k575jf9y.fsf-RRHT56Q3PSP4kTEheFKJxxDDeQx5vsVwAInAS/Ez/D0@public.gmane.org>
2009-03-11 0:37 ` Qiuyang Wu
[not found] ` <293BC70BB130E648A6631DB2F05B6E10019D89830F-uiPIUNf6hlr3OT/vyeh27fufCSb+aD3WLzEdoUbNIic@public.gmane.org>
2009-03-11 14:43 ` Jeff Moyer
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