Hi Richard, 

Thank you for the response, will set both handler and let you know.

when we try to execute guestfs_mount_local. 
Getting below error :

[ 2023-09-19 13:34:05 ]  errno: ( 0 ) : mount_local: unknown option 554101136 
(this can happen if a program is compiled against a newer version of 
libguestfs, then dynamically linked to an older version)

Setup details :
OS : (PRETTY_NAME="Red Hat Enterprise Linux 8.2 (Ootpa)")
Guesfs.h version : 1.50
Guestfish version : guestfish 
1.38.4rhel=8,release=15.module+el8.2.0+5297+222a20af,libvirt

In Below scenario:
1. guestfs_mount_local_run
2. umount /mountpoint
3. Again, while trying to mount, after sleep of 20sec.


Thanks
RR



 

-----Original Message-----
From: Richard W.M. Jones <rjo...@redhat.com> 
Sent: Tuesday, September 19, 2023 1:15 PM
To: Raja Ram Sharma <rshar...@opentext.com>
Cc: Teja Konapalli <tkonapa...@opentext.com>; libguestfs@redhat.com; Divyanshu 
Kumar <dkum...@opentext.com>
Subject: Re: [EXTERNAL] - Re: LIBGUESTFS mount disk failure

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On Sun, Sep 17, 2023 at 04:11:25PM +0000, Raja Ram Sharma wrote:
> One more help is needed : 
> https://urldefense.com/v3/__https://github.com/libguestfs/libguestfs/i
> ssues/124__;!!Obbck6kTJA!blek-uFsj3xPSaSiNQrS-1lk59I6-udl4zqOJCxZ6LLeu
> pvAFl6tPfod_GU2BLm_19gJUs3OXp6_IUEM$
> /***************************************/
> I can get guestfs_last_error using function_callback and write to log file.
> But "event Handling" is not working Also, std::cout and std::cerr still 
> printing on terminal.
> Is there any workaround for Event Handling?
>  How to completely disable/enable standard output?
> /***********************************/
>
> In short, Any Debugging sample program, 
> https://urldefense.com/v3/__https://github.com/libguestfs/libguestfs/i
> ssues/124__;!!Obbck6kTJA!blek-uFsj3xPSaSiNQrS-1lk59I6-udl4zqOJCxZ6LLeu
> pvAFl6tPfod_GU2BLm_19gJUs3OXp6_IUEM$

In the two programs in that issue, the first program sets an event callback and 
the second program sets an error handler.  To capture all messages you must set 
both together.

If you can produce a single, short reproducer which uses both types of handlers 
and still prints to stderr, then I can look at that.

Rich.

--
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