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From: | Linda Walsh |
Subject: | bug#12626: Bug?: dd limited to <2G read size (2G-8K) on 64 bit machine? |
Date: | Fri, 12 Oct 2012 08:40:27 -0700 |
User-agent: | Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.8.1.24) Gecko/20100228 Lightning/0.9 Thunderbird/2.0.0.24 Mnenhy/0.7.6.666 |
It is a bug if there is a check for short reads and that message doesn't get triggered. There is a check for short reads .... the message isn't being written out. You are a complete idiot if you think that is not a bug. POSIX compliance isn't the only standard of whether or not something is a bug. If code is included to check for an error condition (short reads), and DOES trigger in some cases, but not in others, that is the essence of a bug in the code -- regardless of specs. If you don't like my posts, Erik, you are free to ignore them. Otherwise, stop adding off-topic comments like this: Eric Blake wrote:
On 10/12/2012 09:25 AM, Linda Walsh wrote: [please don't top-post on technical lists]
Hey guys, this is still a bug though: Ishtar:dev/shm# dd if=4G of=4Ga bs=4G count=1 0+1 records in 0+1 records out 2147479552 bytes (2.1 GB) copied, 4.0274 s, 533 MB/s (note no error message....)Nope, that's not a bug, but behavior required by POSIX. You asked dd to read _up to 4G_ for a count of exactly 1. Just because the read was short does not make it an error
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