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Full Discussion: Tar/Tapes: Can somebody explain this to me......
Top Forums UNIX for Advanced & Expert Users Tar/Tapes: Can somebody explain this to me...... Post 48450 by modaceface on Monday 8th of March 2004 11:31:55 AM
Old 03-08-2004
Tar/Tapes: Can somebody explain this to me......
Hey Folks,

Can somebody please explain what the crack is with this problem.

I have a backup folder in /var which contains 4 rsync'd server folders:

server08
server15
server16
server18

They all contain the etc folder from the server, and other important data I need to backup.

To send them to tape I have been using: (cd'ing to /var first)

tar -cv -b 16384 -f /dev/nst0 backup/ > /var/log/backup/tapebackup/BACKUP_`date +%Y%m%d`.log 2> /var/log/backup/tapebackup/BACKUP_`date +%Y%m%d`.log

Now, according to my logs, the backup went fine and everything went to plan.

However, If I do a

tar -t -b 16384 -f /dev/nst0

To list the contents of the tape, it firstly says

tar: This does not look like a tar archive
tar: Skipping to next header
tar: Archive contains obsolescent base-64 headers

And then it goes on to list the contents of the tape. However, it does NOT list the server15 folder and all its contents, and misses out some of server16

Now according to my backup logs, they backed up in the following order:

server15
server16
server18
server08

And when I list the contents I get:

Half of server16
server18
server08

And no server15. How come? Its driving me nuts! Does anybody know what I am doing wrong? Why are they backing up in that order? And whats happened to my server15!?!?

Thanks for any help!

P.S. This has been driving me nuts for weeks now. If I cant get it working I will have to give up on using tar and try using cpio. However cpio scares the hell out of me, and if anyone could give me a quick run down on how I would put together a cpio command for the above I would be forever grateful
 

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LEARN ABOUT REDHAT

new

NEW(1)                                                               [nmh-1.5]                                                              NEW(1)

NAME

       new - report on folders with new messages

       fnext - set current folder to next folder with new messages

       fprev - set current folder to previous folder with new messages

       unseen - scan new messages in all folders with new messages

SYNOPSIS

       new [sequences] [-mode mode] [-folders foldersfile] [-version] [-help]

       fnext is equivalent to new -mode fnext

       fprev is equivalent to new -mode fprev

       unseen is equivalent to new -mode unseen

DESCRIPTION

       New  in  its  default  mode  produces  a  one-line-per-folder  listing of all folders containing messages in the listed sequences or in the
       sequences listed in the profile entry "Unseen-Sequence".  Each line contains the folder, the number of messages in the  desired  sequences,
       and the message lists from the .mh_sequences file.  For example:

            foo     11.* 40-50
            bar    380.  760-772 824-828
             total    391.

       The `*' on foo indicates that it is the current folder.  The last line shows the total number of messages in the desired sequences.

       New crawls the folder hierarchy recursively to find all folders, and prints them in lexicographic order.  Override this behavior by provid-
       ing foldersfile containing the pre-sorted list of folders new should check, one per line.

       In fnext and fprev modes, new instead changes to the next or previous matching folder, respectively.

       In unseen mode, new executes scan sequences for each matching folder.

FILES

       $HOME/.mh_profile          The user profile

PROFILE COMPONENTS

       Path:                To determine the user's nmh directory
       Current-Folder:      To find the default current folder
       Unseen-Sequence:     The name of the unseen message sequence

SEE ALSO

       scan(1), mh-format(5)

HISTORY

       Based on Luke Mewburn's new (http://www.mewburn.net/luke/src/new).

MH.6.8                                                             11 June 2012                                                             NEW(1)
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