[Samba] Windows User Profile corruption on a member server

[Jeremy Allison]

On Sat, Feb 12, 2022 at 10:27:11PM +0300, Michael Tokarev via samba wrote:
>12.02.2022 13:16, Michael Tokarev via samba wrote:
>..
>
>I did some experiments here with user profiles. And it turned out
>the prob is quite severe. Lots of files, when copied from the samba
>server to windows10 machine, gets truncated. Small files can be truncated
>by a few bytes, larger files loses some blocks (the resulting size is usually
>dividable by 20480). Out of 104 total files in a freshly created win10
>user profile, 40 gets corrupt. This is a huge number, this is 40% corruption
>ratio, it is not some random very rare event.
>
>And this is independent on the user presence in /etc/passwd - the same
>(similar, since it is different each time) corruption happens if the user
>in question exists as local linux user or not.
>
>There are no errors reported on either side.
>
>With this corruption samba is definitely not usable as a file server, at all.
>
>Any idea where to go from here?
>
>(samba is 4.13.13+dfsg-1~deb11u2, current on debian bullseye system).

Is it possible that it is this bug ?

https://bugzilla.samba.org/show_bug.cgi?id=14928

Fixed in latest 4.15.x, 4.14.x.