A Linux sync (stage 1 or host sync) failed with

 llistxattr(""/mnt/rackware/<rest of file name>"",72192) failed: Argument list too long (7) 


This is a Linux kernel limitation;  The man page for llistxattr, https://man7.org/linux/man-pages/man2/llistxattr.2.html , shows that this error happens when the size of the extended attribute name list is greater than 64 KB, which is the case for the file name shown in the error message.   The man page for getxattr https://man7.org/linux/man-pages/man2/getxattr.2.html shows the same thing.  

The link https://www.spinics.net/lists/xfs/msg26729.html shows the linux developer discussion about this.  


The <rest of file name> will begin with a string tmp.xxxxxxxxxx where xxxxxxxxxx is a random string.   The next part of the file name will be the actual file name on the source server that is causing the issue.   


The workaround to this is to use a filter file to exclude the file name shown in the error message from being migrated.     Often, however, if this issue happens for one file in the directory, it will happen for multiple files in the same directory, so it may be best to exclude an entire directory rather than individual files in the directory.    If the files/directories that would be filtered out are critical file - and so can not be simply filtered out of the migration - then a different solution will be needed.  


 To use a filter file, create a file whose contents is single line

- <file or directory to be filtered out>

Then save that file (referred to as a 'filter file'), either on the laptop you are using to run the RMM GUI or on the RMM itself. The "-" means that the directory on the line will not be migrated.

On the GUI, the Sync Options tab for the sync contains a Filter File line, with two radio buttons. If you select Upload Local File, then browse to the file on your laptop where you saved the filter file, and select the filter file. If you saved the filter file on the RMM, then select the' File path on RMM' button and enter the full path name of the filter file.

Then press the Modify button and restart the capture/sync.

This should allow the capture/sync to complete successfully, though the contents of the file/directory listed in the filter file will not be migrated.

The freshdesk article at https://rackware.freshdesk.com/a/solutions/articles/5000866530 contains additional information about filter files.