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Thu, 13 May 2021 06:53:19 +0000 (GMT) From: "Namjae Jeon" To: "'Eric Sandeen'" , "'Hyunchul Lee'" Cc: "'Namjae Jeon'" , "'linux-fsdevel'" , "'Pavel Reichl'" , In-Reply-To: <39726442-efd9-2c7a-c52e-04b1d7f14985@sandeen.net> Subject: RE: problem with exfat on 4k logical sector devices Date: Thu, 13 May 2021 15:53:19 +0900 Message-ID: <003901d747c4$a8801f50$f9805df0$@samsung.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Outlook 16.0 Thread-Index: AQEo2/DaJy0YUotfQpay9jtmd1bcWAIfpTVmAa7BVgkB2ON5bQKp9gK5AZBO5OQB5D2sQQE5UguEAbMZGUiryD9h4A== Content-Language: ko X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprCJsWRmVeSWpSXmKPExsWy7bCmnu6DM3MSDNqf6Vm0LZ3PZnHt/nt2 i4nTljJb7Nl7ksVi5kE3i9YrWg5sHjtn3WX32LSqk83j/b6rbB5bFj9k8mg//I3F4/MmuQC2 qBybjNTElNQihdS85PyUzLx0WyXv4HjneFMzA0NdQ0sLcyWFvMTcVFslF58AXbfMHKAjlBTK EnNKgUIBicXFSvp2NkX5pSWpChn5xSW2SqkFKTkFhgYFesWJucWleel6yfm5VoYGBkamQJUJ ORlXD65iLNjNVTHzUloD4yyOLkZODgkBE4lL+/6xdjFycQgJ7GCU+HLvE5TziVFi+tpD7BDO Z0aJFy2dzDAtPfvms0AkdjFKrDs+FarqBaPE9eddTCBVbAK6Ev/+7GcDsUUEgiS2LHjMBlLE LLCWUWLXyT2sIAlOAXuJvp1LgRIcHMICNhItZ6pAwiwCqhK/Z+4CK+EVsJTYff4kO4QtKHFy 5hMWEJtZQF5i+9s5UBcpSPx8uowVZIyIQJbE+w0qECUiErM725hB1koIzOSQmHv4KwtEvYvE t5YGNghbWOLV8S3sELaUxOd3e6Hi5RInTv5igrBrJDbM28cOMl9CwFii50UJiMksoCmxfpc+ RIWixM7fcxkh1vJJvPvawwpRzSvR0SYEUaIq0XfpMNRAaYmu9g/sExiVZiH5axaSv2YheWAW wrIFjCyrGMVSC4pz01OLDQuMkaN6EyM4eWqZ72Cc9vaD3iFGJg7GQ4wSHMxKIrxiSbMThHhT EiurUovy44tKc1KLDzGaAkN6IrOUaHI+MH3nlcQbmhoZGxtbmJiZm5kaK4nzpjtXJwgJpCeW pGanphakFsH0MXFwSjUwrVBc+OGkqcGZgHeOjww2y0d9julkbU1e3T+ZZ0lu101PuZDuiU/X mN08o7JB5rL7ubZP7QW377443Xirc9vZ3k7vsjPLO+9PSqszPuWVwsa1LqqorWG9iXbg3PNz K9dscey7YVd8f/bx5p7FQXry8bnOOxbyeoQVKnBdv7bu3vEPP2KLnrGWxz98Ifp+31t2nlXv mTb/Db92P7yu1czStcTn90orfcEj3yqn7pgh7PEttfJYyH3jHrup4ut7XIU9Qyezvv+ULGdy 7m3dWk+J9Q4VX08xm0qsmyoX5dvJn26zqJ0pf67rzKJMc7lA7QepDkv2F6il398bLbltYlut QumVkHD/Xy8FmO+FaugpsRRnJBpqMRcVJwIAeG/D6icEAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrPLMWRmVeSWpSXmKPExsWy7bCSvO79M3MSDGaf0LZoWzqfzeLa/ffs FhOnLWW22LP3JIvFzINuFq1XtBzYPHbOusvusWlVJ5vH+31X2Ty2LH7I5NF++BuLx+dNcgFs UVw2Kak5mWWpRfp2CVwZVw+uYizYzVUx81JaA+Msji5GTg4JAROJnn3zWboYuTiEBHYwSsw5 dYERIiEtcezEGeYuRg4gW1ji8OFiiJpnjBJTbh5kA6lhE9CV+PdnP5gtIhAkcen3DGaQImaB 9YwSBxs2skF0TGGR+P12PTNIFaeAvUTfzqVsIFOFBWwkWs5UgYRZBFQlfs/cxQpi8wpYSuw+ f5IdwhaUODnzCQuIzSygLdH7sJURwpaX2P52DjPEoQoSP58uYwUZKSKQJfF+gwpEiYjE7M42 5gmMwrOQTJqFZNIsJJNmIWlZwMiyilEytaA4Nz232LDAKC+1XK84Mbe4NC9dLzk/dxMjOI60 tHYw7ln1Qe8QIxMH4yFGCQ5mJRFesaTZCUK8KYmVValF+fFFpTmpxYcYpTlYlMR5L3SdjBcS SE8sSc1OTS1ILYLJMnFwSjUwna+Mn9BTVaK/c2JSeqqpSlzcIpcF89IXdh1MC5B6HhgneeWF 4OXyd3bbgla5/ND6oPRbd3vodoMUiahjmk+i9rim154JzNqyjvGwQR1rtO/y0siVzX9uHPly 9OiVORUNN7xsJsdYWK++8SbywA2pvHKxQy1mF3ljXvnLLkhrsrN8+tJurfkTfyHv0KusHwKZ ft7+c+Qn812/nx7fzubOaJplIBl7QO9Z0b3dwaXTMr3fFC36uEXP0rClp4EjmFVmXovQ7xs8 ZpLCBwROnf5o9DL/6ptgVZ86ngSN9Sal3+dPc72brXMwtNqvOFNtW/f5wmQ2G7ky3j01AfWr fded+nhLh8npqZ3E0e2zxVOVWIozEg21mIuKEwG4ScfKEgMAAA== X-CMS-MailID: 20210513065319epcas1p4289aec995010840ac9d743e93efb4deb X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-Sendblock-Type: SVC_REQ_APPROVE CMS-TYPE: 101P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20210511233346epcas1p3071e13aa2f1364e231f2d6ece4b64ca2 References: <372ffd94-d1a2-04d6-ac38-a9b61484693d@sandeen.net> <276da0be-a44b-841e-6984-ecf3dc5da6f0@sandeen.net> <001201d746c0$cc8da8e0$65a8faa0$@samsung.com> <35b5967f-dc19-f77f-f7d1-bf1d6e2b73e8@sandeen.net> <39726442-efd9-2c7a-c52e-04b1d7f14985@sandeen.net> Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org > On 5/12/21 11:44 AM, Eric Sandeen wrote: > > I also wonder about: > > > > bd->num_sectors = blk_dev_size / DEFAULT_SECTOR_SIZE; > > bd->num_clusters = blk_dev_size / ui->cluster_size; > > > > is it really correct that this should always be in terms of 512-byte sectors? > > It does look like this causes problems as well: > > # dump/dump.exfat /root/test.img > exfatprogs version : 1.1.1 > -------------- Dump Boot sector region -------------- > Volume Length(sectors): 65536 <<<<<< > FAT Offset(sector offset): 256 > FAT Length(sectors): 64 > Cluster Heap Offset (sector offset): 512 > Cluster Count: 65024 > Root Cluster (cluster offset): 6 > Volume Serial: 0x1234 > Sector Size Bits: 12 <<<<<<< > Sector per Cluster bits: 0 > > ... > > # tune/tune.exfat -v /root/test.img > exfatprogs version : 1.1.1 > [exfat_get_blk_dev_info: 202] Block device name : /root/test.img > [exfat_get_blk_dev_info: 203] Block device offset : 0 > [exfat_get_blk_dev_info: 204] Block device size : 268435456 > [exfat_get_blk_dev_info: 205] Block sector size : 512 <<<<<<< > [exfat_get_blk_dev_info: 206] Number of the sectors : 524288 <<<<<<< > [exfat_get_blk_dev_info: 208] Number of the clusters : 65536 Understood, Will fix it. Thanks for detailed explanation!