[Bug 288014] net/samba420: errors when copying sparse files to samba share

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=288014

--- Comment #12 from Andrej Ebert <andrej@ebert.su> ---
So I think I found the problem:

[2025/07/16 07:45:20.268817,  2, pid=33508, effective(901, 1003), real(0, 0),
class=smb2] ../../source3/smbd/smb2_ioctl_filesys.c:485(fsctl_zero_data)
  zero-data fallocate(0x3) failed: Function not implemented

Then I went down a rabbit hole about fallocate(Linux-specific) and
posix_fallocate. 

Support for it was removed a while ago in ZFS:

https://lists.freebsd.org/pipermail/freebsd-fs/2017-November/025508.html

Samba apparently uses posix_fallocate, but maybe doesn't handle the EINVAL from
ZFS gracefully?

Acording to https://reviews.llvm.org/D115957 posix_fallocate is
counterproductive on ZFS _and_ UFS on FreeBSD.

I'm trying to patch the port to build with -DHAVE_POSIX_FALLOCATE=0, to see how
it will behave in your setup, but no sucess so far.

-- 
You are receiving this mail because:
You are the assignee for the bug.