From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pat LaVarre Subject: Re: zeroes read back more often than appended Date: 23 Oct 2003 12:52:13 -0600 Sender: linux-fsdevel-owner@vger.kernel.org Message-ID: <1066935133.11806.0.camel@patehci2> References: <1065553341.8172.45.camel@patehci2> <20031007204951.A25423@falcon.csc.calpoly.edu> <1065732882.5176.14.camel@patehci2> <1065747151.2314.12.camel@patehci2> <1065803984.3037.7.camel@patehci2> <1065809754.3037.105.camel@patehci2> <1066091916.3011.2.camel@patehci2> <1066096137.3314.32.camel@patehci2> <1066692050.2814.33.camel@patehci2> <1066747637.8228.7.camel@patehci2> <1066754816.12021.1.camel@patehci2> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from email-out1.iomega.com ([147.178.1.82]:24787 "EHLO email.iomega.com") by vger.kernel.org with ESMTP id S261662AbTJWSwc (ORCPT ); Thu, 23 Oct 2003 14:52:32 -0400 Received: from royntex01.iomegacorp.com (unknown [147.178.90.120]) by email.iomega.com (Postfix) with ESMTP id 12D121F11 for ; Thu, 23 Oct 2003 12:52:32 -0600 (MDT) To: linux-fsdevel@vger.kernel.org In-Reply-To: <1066754816.12021.1.camel@patehci2> List-Id: linux-fsdevel.vger.kernel.org > > From: Pat LaVarre ... > > > > Try appending nonzero to multiple files in a > > round robin sequence, and udf.ko reads back > > zero in place of the nonzero written. mkfs > > in place of mkudffs reads back only the > > nonzero written. Furthermore, now I can confirm, as for udf.ko author Ben Fennema, so likewise for me, the udf image unmounted after reading more zeroes than appended ... ... does fail the udf fsck that is udfct udf_test. Pat LaVarre $ find `which udf_test` -printf '%l\n' /home/pat/k/udfct_1.0r2/src/udf_tester/udf_test $ $ fswhd 0 768 mkudffs 0xFF600 0xC8 0x2 ... $ $ udf_test dd.bin | grep -i 'final udf rev' Final UDF Revision range: 2.01 only $ $ udf_test -udf 2.01 dd.bin | egrep -i '(error|warning|note):' | wc -l 13 $ $ udf_test -udf 2.01 dd.bin | grep -i 'count:' Error count: 6 total occurrences: 10 Warning count: 1 total occurrences: 1 $ $ udf_test -udf 2.01 dd.bin | egrep -i '(error|warning|note):' AED 1352 Error: 6 non-zero bytes found in a 696 bytes blank area EFE 72 Error: Logical Blocks Recorded: 102039, expected: 44269, AED 968 Error: 6 non-zero bytes found in a 1080 bytes blank area AED 936 long_ad file tail error: Extent Type: 0, expected: 1, AED 952 long_ad file tail error: Extent Type: 0, expected: 1, EFE 72 Error: Logical Blocks Recorded: 102019, expected: 46475, ==> Note: 7 multiple allocated blocks inside partition space, Error: 7 multiple allocated blocks in extent for long ADs. Error: 7 multiple allocated blocks in extent for long ADs. Error: 2 used blocks marked as unallocated or freed Warning: 113305 unused blocks NOT marked as unallocated. LVID 80 FreeSpaceTable error: Physical Partition p0 Free Space: 188597, - Note: The verifier may be unable to find the correct values for $