Date: Thu, 21 Nov 2002 11:19:10 -0800 From: Terry Lambert <tlambert2@mindspring.com> To: kalts@estpak.ee Cc: freebsd-current@freebsd.org Subject: Re: smbfs problems Message-ID: <3DDD31AE.92C08AD6@mindspring.com> References: <20021121130830.GB1907@tiiu.internal> <20021121132223.GA2076@tiiu.internal>
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Vallo Kallaste wrote: > Sorry forgot to add one detail. Althought dd'ing the same file to > smbfs mount works, it'll sometimes modify the file being copied > (size is different). It doesn't happen reliably, sometimes the file > is copied fine, sometimes not. At the times the file isn't copied > right there's an error message: > > root:vallo# dd if=testfile of=/mnt/vallo/test1 > dd: /mnt/vallo/test1: Bad address > 9356+0 records in > 9355+0 records out > 4789760 bytes transferred in 20.350003 secs (235369 bytes/sec) > > It seems to me that adding conv=sync flag to dd removes the > abovementioned failure case. 10 tries of dd with this flag added did > fine. The 'conv-sync' flag to 'dd' pads the operation out to a record boundary, if the input of the operation is not a full record in length. This observation is consistent with an incomplete final write, for lack of data. Probably this has to do with the TCP_PUSH option and/or the SMB server's connection flags. -- Terry To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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