can't easily use unison-gtk to sync a local folder to my VFAT USB drive
My simple way of backing up my important personal data is to have a folder in my home directory called "sync". I file all data under there that ought to be periodically backed up. I also have a USB drive, formatted with VFAT. I have a "sync" folder on that USB drive as well. I want to be able to use unison-gtk to syncronize these two folders called "sync". But when I plug in the USB drive, it gets automounted with the mount option "umask=077". So all files on the USB drive get seen and created with permissions looking like "rwx------". But my umask (that all users have by default) is "0022", thus all their newly created files will have permissions like "rw-r--r--".
When I try to do a sync in unison-gtk, it can sync in only one direction: from the USB drive to my home folder. And the files it syncs to my home folder all annoyingly have permissions like "rwx------". This leads to trouble like text files that are wrongly made "executable", and directories that you intend other users to be able to read cannot be, because they are not "executed" by any other user (even if one remembers to add group permission allows their reading of that folder).
Furthermore, one cannot sync files from the local folder to the USB drive, because the desired permissions unison-gtk would like to use (ie. "rw-r--r--" that most local files would have by default) can't be used on the USB drive, as the mount options insist that all newly created files on the USB drive have the permissions "rwx------" only. So you see errors in unison-gtk for each and every file it tries to copy onto the USB drive.
I have two ideas to address this:
1) In Gnome's System menu -> Preferences -> Removable Drives and Media -> "Storage" tab, please add an "Advanced" button under "Removable Storage", and allow the user to set a different umask to be used when USB drives get automounted, and in my case I would probably want to use something like "133", making all the files on the USB drive appropriately appear as "rw-r--r--" (and hopefully the directories on the USB drive can somehow still be navigatable, ie. "executable").
2) At the time of automounting the USB drive, perhaps the user's current umask (ie. as defined in .bash_profile) needs to be looked at, and a umask mount option for automounting needs to be dynamically figured out to nicely match this, such that unison-gtk will be happy.
|Subharo Bhikkhu (subharo) wrote : Re: [Bug 118283] Re: can't easily use unison-gtk to sync a local folder to my VFAT USB drive||#2|
|Changed in unison (Ubuntu):|
|status:||New → Confirmed|
|importance:||Undecided → Medium|