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Tue, 11 May 2021 23:53:10 +0000 (GMT) From: "Namjae Jeon" To: "'Eric Sandeen'" , "'Namjae Jeon'" Cc: "'linux-fsdevel'" , "'Pavel Reichl'" , , "'Hyeoncheol Lee'" In-Reply-To: <276da0be-a44b-841e-6984-ecf3dc5da6f0@sandeen.net> Subject: RE: problem with exfat on 4k logical sector devices Date: Wed, 12 May 2021 08:53:10 +0900 Message-ID: <001201d746c0$cc8da8e0$65a8faa0$@samsung.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Outlook 16.0 Content-Language: ko Thread-Index: AQEo2/DaJy0YUotfQpay9jtmd1bcWAIfpTVmAa7BVgkB2ON5bawOjtlg X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprKJsWRmVeSWpSXmKPExsWy7bCmge5zidkJBsvuSlm0LZ3PZnHt/nt2 i4nTljJb7Nl7ksVi5kE3i9YrWg5sHjtn3WX32LSqk83j/b6rbB5bFj9k8mg//I3F4/MmuQC2 qBybjNTElNQihdS85PyUzLx0WyXv4HjneFMzA0NdQ0sLcyWFvMTcVFslF58AXbfMHKAjlBTK EnNKgUIBicXFSvp2NkX5pSWpChn5xSW2SqkFKTkFhgYFesWJucWleel6yfm5VoYGBkamQJUJ ORkTfsoWbBKoeNDxk72BsZW3i5GTQ0LAROJlzwLmLkYuDiGBHYwS89f2s0E4nxglPp/bzQjh fGOUuPHlLCtMy+Yp+9khEnsZJb42d0D1v2CU2PzoABNIFZuArsS/P/vZQGwRgVCJxk9rwUYx C6xhlJhx/iMzSIJTwF5i/oIfQEUcHMICNhItZ6pAwiwCqhL/Hn9jB7F5BSwlFqxvZYKwBSVO znzCAmIzC8hLbH87hxniIgWJn0+XsULERSRmd7YxQ+x1k3j+ZjUryF4JgZkcEjd/rYBqcJG4 9XYiC4QtLPHq+BZ2CFtK4mV/G5RdLnHi5C8mCLtGYsO8fewgd0oIGEv0vCgBMZkFNCXW79KH qFCU2Pl7LiPECXwS7772sEJU80p0tAlBlKhK9F06DDVQWqKr/QP7BEalWUgem4XksVlInpmF sGwBI8sqRrHUguLc9NRiwwJD5LjexAhOn1qmOxgnvv2gd4iRiYPxEKMEB7OSCO/c+lkJQrwp iZVVqUX58UWlOanFhxhNgUE9kVlKNDkfmMDzSuINTY2MjY0tTMzMzUyNlcR5052rE4QE0hNL UrNTUwtSi2D6mDg4pRqYru8XtntgKnGGNUJY5NUGh4R/PGksAn6rv3etlZ/MeHFOcc6el4u8 7j0+ki/WIdjm2t73p0GpMnxi2v4Dd9TfTgmtn/or726ylZt8Z4mg0ANvhV8uuxYUqHOWHtbU WPza9cfb/5X19e/t1h3tLfNazlpolrYx0z7ENMzs0LW/Cgqqs5lDZiWGLd6iuebu5dxVTZaV JZs2+25kebSu+Gcte6o6/6fnSZe+1F+53P1OcHLmxApnp1eL/3+bxibxLrU+OvihQaJ0UZN8 6rUl5b98Dq/m17u6XYEx9kUq27YqxadOjfs+6Tdm5ypdaPO5+KmCdWJ04LeHRYuTt1VKPlDu 5+Wwd9F78VV06YKF4VlKLMUZiYZazEXFiQA4SMMJKAQAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFmpgkeLIzCtJLcpLzFFi42LZdlhJTve5xOwEg46/LBZtS+ezWVy7/57d YuK0pcwWe/aeZLGYedDNovWKlgObx85Zd9k9Nq3qZPN4v+8qm8eWxQ+ZPNoPf2Px+LxJLoAt issmJTUnsyy1SN8ugStjwk/Zgk0CFQ86frI3MLbydjFyckgImEhsnrKfvYuRi0NIYDejxIv3 yxghEtISx06cYe5i5ACyhSUOHy6GqHnGKLHqZyMrSA2bgK7Evz/72UBsEYFQiWltv9lAipgF 1jFKPDq4jQ2io4NJ4uueL8wgVZwC9hLzF/xgA5kqLGAj0XKmCiTMIqAq8e/xN3YQm1fAUmLB +lYmCFtQ4uTMJywgNrOAtkTvw1ZGCFteYvvbOcwQhypI/Hy6jBUiLiIxu7ONGeIgN4nnb1az TmAUnoVk1Cwko2YhGTULSfsCRpZVjJKpBcW56bnFhgWGeanlesWJucWleel6yfm5mxjBkaSl uYNx+6oPeocYmTgYDzFKcDArifDOrZ+VIMSbklhZlVqUH19UmpNafIhRmoNFSZz3QtfJeCGB 9MSS1OzU1ILUIpgsEwenVANT4JLPfY0GXgW75LkWNq9VveF0wWFW6HNZLd3Db1UdFtdmJdzp eWpXI7jIVtTHvYDDSeBle5r6lrL9dv86OjmvZsoHSOp/nPyl1z7YuubQKVErgb0h0sxSDze6 hDk3PFnJcl1j3v+3f7wa7lTwr1rMOOXfI4bVWvpROz/pMi77Hh9ekaHN1Tf1svpG5ovdB/mv 6HmU+rQsmPul/87+1j1NO1/dVNZ+cz3x7KGb7TZ/13VsMsh7Yye/UOs0R4Pd72j5M0f/sUfu bi1NVXrL3ip4LP5EVGx71C+d2weaT2y2/dHrEy1eEprlzqsrtFZB3jVt3oXXbjGNz76s+dQQ Jj71h/8h7y7Pa+u6jy7dqqbEUpyRaKjFXFScCAAk/z1KEwMAAA== X-CMS-MailID: 20210511235311epcas1p16cf9bab6edeae2b9e82abd17da36e3b7 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> Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org > On 5/11/21 4:21 PM, Namjae Jeon wrote: > >> Hi Namjae - > > Hi Eric, > >> > >> It seems that exfat is unhappy on 4k logical sector size devices: > > Thanks for your report! > > We have got same report from Christophe Vu-Brugier. And he sent us the > > patch(https://protect2.fireeye.com/v1/url?k=ac8f77ef-f3144ef5-ac8efca0 > > -000babff24ad-8b7be88b031de920&q=1&e=0e9634f8-7ff9-4eb8-b5af-2316b62e9 > > 236&u=https%3A%2F%2Fgithub.com%2Fexfatprogs%2Fexfatprogs%2Fpull%2F164) > > to fix it yesterday.(Thanks Christophe!), I will check it today > > Oh, good timing! ;) > > gI'll try to look at that in more depth. It does seem to make everything work for me, and resolves a > couple other misunderstandings I may have had, and they seem to match with the spec. > > For example, I now see that boot sector signature does go at the end of 512 for the primary boot > sector, and at the end of $SECTOR_SIZE for the extended boot sector. Thanks for your check:) > > One other thing that I ran across is that fsck seems to validate an image against the sector size of > the device hosting the image rather than the sector size found in the boot sector, which seems like > another issue that will come up: > > # fsck/fsck.exfat /dev/sdb > exfatprogs version : 1.1.1 > /dev/sdb: clean. directories 1, files 0 > > # dd if=/dev/sdb of=test.img > 524288+0 records in > 524288+0 records out > 268435456 bytes (268 MB) copied, 1.27619 s, 210 MB/s > > # fsck.exfat test.img > exfatprogs version : 1.1.1 > checksum of boot region is not correct. 0, but expected 0x3ee721 boot region is corrupted. try to > restore the region from backup. Fix (y/N)? n > > Right now the utilities seem to assume that the device they're pointed at is always a block device, > and image files are problematic. Okay, Will fix it. > > Also, as an aside, it might be useful to have a "set sector size" commandline option at least for > testing, or to create 4k images that could be transferred to a 4k device. Agreed, We will add that option:) Thanks! > > Thanks, > -Eric