topic Re: fbackup doesn't work in Operating System - HP-UX

fbackup doesn't work

Ahmad Munawwar — Mon, 29 Apr 2002 05:07:49 GMT

When entered the command below to do backup, nothing happen, i mean immediately i got command line prompt.

# /usr/sbin/fbackup -f /dev/rmt/0m -2 ???g
/opt/sdp/snapadm/etc/backup/daily_sdp_bck_graph
#

Please advise.

Re: fbackup doesn't work

Niraj Kumar Verma — Mon, 29 Apr 2002 05:14:34 GMT

Hi,

You need to define a graph file name after the -g option.

Since there is no pgraph file defined, this means there is nothing to takebackup so you get a command prompt.

Do read the man pages

=============================
-g graph graph defines the graph file. The graph file is a text
file containing the list of file names of trees to be
included or excluded from the backup graph. These
trees are interpreted in the same manner as when they
are specified with the -i and -e options. Graph file
entries consist of a line beginning with either i or e,
followed by white space, and then the path name of a
tree. Lines not beginning with i or e are treated as
an error. There is no default graph file. For
example, to back up all of /usr except for the subtree
/usr/lib, a file could be created with the following
two records:

i /usr
e /usr/lib
==============================

-Niraj

Re: fbackup doesn't work

Printaporn_1 — Mon, 29 Apr 2002 05:24:03 GMT

Hi,

Try change -2 to -0 first.
does it backup ?

Re: fbackup doesn't work

Ahmad Munawwar — Mon, 29 Apr 2002 06:43:36 GMT

Hi Niraj,

The filename is daily_sdp_bck_graph and located at /opt/sdp/snapadm/etc/backup/
Contents of daily_sdp_bck_graph file:

#########################################
i /opt/sdp/snapadm/etc
e /opt/sdp/snapadm/etc/install
i /opt/sybase/home
i /opt/sybase/DS/interfaces
i /opt/sybase/DS/SYB_SDP1.cfg
i /opt/sybase/RS/REP/install/SYB_SDP1_RS.cfg
i /dbdumps

###########################################

I run the command in multiuser mode, it was working fine previously. I do backup daily (incremental backup).

Re: fbackup doesn't work

Niraj Kumar Verma — Mon, 29 Apr 2002 07:10:34 GMT

Hi,

can you please check the system date and time .

try touch to any file withing the backup data tree and use tho -0 instead of -2.

Can you also verify whether
/var/adm/fbackupfiles/dates
is getting created for the current date???

-Niraj

Re: fbackup doesn't work

Ed Sampson — Mon, 29 Apr 2002 14:00:02 GMT

Try running with the -v option to generate more info.

Re: fbackup doesn't work

Ahmad Munawwar — Thu, 02 May 2002 00:52:00 GMT

On 26/4/02, when we were doing our weekly
maintenance, we found that the SDP1 weekly O/S
backup failed. After entering the command
/usr/sbin/fbackup -f /dev/rmt/0m -1 -g \
/opt/sdp/snapadm/etc/backup/daily_sdp_bck_graph, the screen will automatically goes to command prompt. On 29/4/02, during daily maintenance activities, the SDP1 daily backup also failed. After further investigation we found that the fbackup file is zerorize (0 bytes). Then we copied the same file from identical machine. When tried to do O/S backup on SDP1, it is a success.

Q1. How the fbackup file can be zerorized ?
Q2. What are the steps to avoid these from
happening again ?
Q3. Can other users than 'root' run the backup
commands ?

Re: fbackup doesn't work

Michael Tully — Thu, 02 May 2002 01:02:28 GMT

Hi,

Your 'fbackup' binary was zero?
/usr/sbin/fbackup

Some steps to take:
Make sure that this file has the
permissions of only 555 meaning it can't
easily be written over. Change the 'root'
password on your system regularly.
Implement 'sudo' or restricted SAM (sam -r)
if operators need to do tasks.
Yes other users can use 'fbackup'. To prevent
this situation, look at the restricted tools
as above or change the permissions of the
binary to be 500.

~Michael~

Re: fbackup doesn't work

Jeff Schussele — Thu, 02 May 2002 01:05:21 GMT

Hi Ahmed,

Can't tell whether you mean the graph file or the fbackup command itself was zero bytes.
But regardless a file can be "zeroed" by:

1) > /path/to/filename
2) The FS goes 100% used at a
time when the file is being written to (rare but happens)
3) cp /dev/null /path/to/filename
4) inode table corruption

There are probably several other scenarios - but these come to mind.

Rgds,
Jeff

Re: fbackup doesn't work

Ahmad Munawwar — Fri, 03 May 2002 07:12:09 GMT

Hi,

Yes, the fbackup binary was "zeroed". Do we have any method to find in the system what actually happen to the binary file (fbackup).
It is difficult to say that this file was
"zeroed" by command null. The file has already 555 permission. I will change the file permission to 500.

I agreed with you that the 'root' password have to be regularly change.

Please advise.

Regards
Munawwar