Date: Tue, 22 Apr 2008 21:07:22 -0400 From: Mike Tancsa <mike@sentex.net> To: pluknet <pluknet@gmail.com> Cc: stable@freebsd.org Subject: Re: nfs-server silent data corruption Message-ID: <200804230108.m3N18Rtd094429@lava.sentex.ca> In-Reply-To: <a31046fc0804221313k5bf5e2f3h106a342a5644e152@mail.gmail.co m> 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> <a31046fc0804221313k5bf5e2f3h106a342a5644e152@mail.gmail.com>
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At 04:13 PM 4/22/2008, pluknet wrote: >Hi, I have the same problem with data corruption (with nfe on nfs >server side), >particularly when transferring large files. >Maybe this is somehow associated with the topic. > >My simple test case: >truncate -s 1000m bigfile >^^ here I get zero-filed file >cp bigfile /nfs/mounted >^^ here I get not-at-all-zero-filed file, after uploading to nfs server > >nfs server on 8-CURRENT as of Apr 17 >nfs client on 7.0-STABLE as of Apr 12 Hi, On a RELENG_6 client and the same RELENG_7 (now ULE) server with nfe, all seems to work fine [ns1]# mount /backup/ [ns1]# cp -p j2.txt /backup/ [ns1]# umount /backup/ [ns1]# mount /backup/ [ns1]# cp -p /backup/j2.txt /tmp/j2-copy.txt [ns1]# md5 /tmp/j2-copy.txt MD5 (/tmp/j2-copy.txt) = b0977dceb7b511bb8c542ac4f18c7128 [ns1]# md5 /tmp/j2.txt MD5 (/tmp/j2.txt) = b0977dceb7b511bb8c542ac4f18c7128 [ns1]# cd /tmp [ns1]# truncate -s 1000m bigfile [ns1]# ls -lh bigfile -rw-r--r-- 1 root wheel 1.0G Apr 22 21:03 bigfile [ns1]# md5 bigfile MD5 (bigfile) = e5c834fbdaa6bfd8eac5eb9404eefdd4 [ns1]# cp -p bigfile /backup/ [ns1]# umount /backup/ [ns1]# mount /backup/ [ns1]# cp -p /backup/bigfile /tmp/b2 [ns1]# md5 /tmp/b2 MD5 (/tmp/b2) = e5c834fbdaa6bfd8eac5eb9404eefdd4 [ns1]# ---Mike
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