--On Tuesday, December 02, 2003 12:35:06 -0500 Josiah Ritchie <[EMAIL PROTECTED]> wrote:
> Jon LaBadie scripted :: > >> Unless that is a changer you pretty much have it. Write some >> write a tar archive to the tape and be sure you can recover it. >> Then write multiple archives to the tape using the "no rewind" >> version of the tape device. Use mt to see if you can position >> at a specific archive and recover just the one. >> >> You might want to use dd with a blocksize of 32K to be sure >> the default amanda block size works ok. Similarly you might >> want to explore the mt commands to set compression on/off, >> block size, check status, set defaults, ... >> >> If it is a changer, also explore the mtx command. > > It isn't a changer so I can skip the mtx curve. :-) I'll probably need to get > into that later though cause I'll eventually need one. > > I can't play around on this server too much for fear of messing things up. Can I > pass some commands by you guys for sanity checking? > > mt -f /dev/st0 status # works fine (If I know what I'm reading) > mt -f /dev/st0 retension # works > mt -f /dev/st0 erase # works I need to remember a & at the end next time, ssh > won't background it for some odd reason. (^z bg) > > tar -cf /dev/st0 /etc #? records /etc to tape in /dev/st0 Also make sure you can then mt -f /dev/st0 rewind tar -xf /dev/st0 (first make sure you are using GNU tar and are in a temp directory so you don't clobber your /etc) As Jon pointed out, you need to make sure you can use the proper non-rewinding device: mt -f /dev/nst0 rewind tar -cv /dev/nst0 /some/dir tar -cf /dev/nst0 /another dir mt -f /dev/nst0 rewind tar -tf /dev/nst0 (should list /some/dir) mt -f /dev/nst0 fsf 1 (moves to beginning of next file) tar -tf /dev/nst0 (should list /another/dir mt -f /dev/st0 rewind If you're planning on using tar for backups: tar --version Make sure it is at least 1.13.19, I think 1.13.25 is the current version. Older versions will appear to back up fine but you will have problems restoring properly. > > JSR/ -- Frank Smith [EMAIL PROTECTED] Systems Administrator Voice: 512-374-4673 Hoover's Online Fax: 512-374-4501
