Web lists-archives.com

Re: Backup problem using "cp"




On 05/07/2018 07:01 AM, Thomas Schmitt wrote:
Hi,

Richard Owlett wrote:
richard@debian-jan13:~$ stat / | fgrep Device
Device: 80eh/2062d      Inode: 2           Links: 22
richard@debian-jan13:~$ stat /media | fgrep Device
Device: 80eh/2062d      Inode: 131073      Links: 5

"/media" was not the directory to examine.
You need to examine the directory which you gave as second argument to cp.
In your initial post of this thread the cp command is quoted as

   cp -ax /  "/media/richard/MISC
   backups/dev_sda14/"

(Dunno whether the line break in that mail is significant.)

No the _apparent_ line break was an artifact of email quoting process.
I can't rerun the diagnostic at the moment - hardware fully occupied with testing my proposed workaround, which works so far but progress resembles molasses running uphill on Pluto in winter ;/




I gather that "cp" is then an inappropriate tool.

That's not decided yet.

If your cp target directory had a different device number, then cp option -x
did not what it is supposed to do.

But if your target directory was not the mount point of the USB disk and
not inside the filesystem of the USB disk, then you made a mistake by
giving that directory as target.

Understood.



"tar" is inappropriate for my preferences - I was attempting to use "cp" as
there would be multiple files &/or directories as input *and* output.

You could use multiple tar commands.
(I doubt that you can talk cp into addressing more than one target.)

Communication confusion.
My goal was to copy root and its sub-directory to a directory on another physical device.



Have a nice day :)

Thomas