Hi Anoop, > I could reproduce the difference in SHA256 checksum after copying a > directory with 100 copies of test file(provided by reporter) from > io_uring VFS module enabled share using Windows explorer(right-click- >> copy/paste). Only 5 out of 100 files had correct checksum after copy > operation :-/ Great! Can you please try to collect level 1 log files with the patch https://bugzilla.samba.org/attachment.cgi?id=15955 applied? If you use files with only 0xff please also use the "io_uring:check_ff=yes" option. Maybe the problem is really triggered by short reads... Thanks! metze
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