Ross, I agree. I will dump the underlying device, once I implement 2.4 and
get CDL going. I have only allowed this thing to go production with the
stipulation they 'understand that if you are dumb enough to put production
DATA into this file system, the odds of being struck by lightning apply to
that data.' Basically allowing ONLY the application to live here. They're
using outside (SQL Server) datasources so I'm not terribly worried, I can
re-create the environment in a day if I had to.



|---------+---------------------------->
|         |           "Patterson, Ross"|
|         |           <ROSS.PATTERSON@c|
|         |           a.com>           |
|         |           Sent by: Linux on|
|         |           390 Port         |
|         |           <[EMAIL PROTECTED]|
|         |           IST.EDU>         |
|         |                            |
|         |                            |
|         |           05/13/2002 12:36 |
|         |           PM               |
|         |           Please respond to|
|         |           Linux on 390 Port|
|         |                            |
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  |       To:       [EMAIL PROTECTED]                                            
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  |       Subject:  Re: behaviour of tar                                               
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James Melin <[EMAIL PROTECTED]> writes:
> So my options for backing things up are
> 1) Tar critical directory trees on a daily, weekly and
> monthly basis, FTP
> them to the HFS on s/390 so they get backed up by existant things.
> 2) Get NFS working on S/390 and Linux so that S/390 can mount
> my Linux file
> system and back it up.

Just remember that "tar" and NFS don't cover all the bases.  For
example, what happens if you get a head crash on your Linux
sysres pack?  How do you get your system up far enough to
restore everything from your OS/390-side backups?  Ever more fun:
How do you IPL Linux at all if the tracks OUTSIDE the /dev/dasd<x>1
filesystem have been damaged?

You really need to dump the underlying block device, at least once
in a while.  The traditional tool is "dd".  It doesn't give you
much help or documentation, but the price is in your range :-)

> I'm In Hell.

"Hell is a city much like London"
 -- Percy Bysshe Shelley

Ross Patterson
Computer Associates

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