[Bugs] [Bug 1433460] Extra line of ^@^@^@ at the end of the file

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1433460

Niels de Vos <ndevos at redhat.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |kdhananj at redhat.com,
                   |                            |patrice.linel at genusplc.com
              Flags|                            |needinfo?(patrice.linel at gen
                   |                            |usplc.com)



--- Comment #1 from Niels de Vos <ndevos at redhat.com> ---
The ioctl() mentioning TCGETS is unlikely related to the problem. Although, the
strace shows the first parameter of the functions as "1", this is the
file-descriptor where the function is executed on. By default, "1" refers to
standard-out (/dev/stdout), which depends on the type of terminal, console or
redirection to a file. It is strange to see lseek() being done on stdout.
Also, the strace show the ^@ symbols in part of the function call, this should
not happen when writing the strace log to a file with "strace -o strace.log
...".

Could you explain a little bit more about the application?
- How is it writing files?
- Can you reproduce this on other volume types? (Try a single-brick volume too)
- How are you capturing the strace?
- Can you provide a shell script or simple application that reproduces this?
- What is the exact glusterfs version?
- Does this only happen over NFS, FUSE or other types of mounting?
- What options are set for the volume (output of 'gluster volume info <VOL>')?

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