Some vital information on ISM
Posted in 2005
Topics: General Discussion
One of the problems that has been reported on ISM is that it doesn't do a FULL backup of the bootstrap. There is even a bug report cncerning this. But I couldn't understand why one of my sites was doing a full backup and others were not. After much research I disocvered that the ISM system does a FULL backup of the bootstrap information if the backup is run on a Sunday, but it only does incremental backups on the other days. Now that is all very well if you do daily backups but many of the sites that I manage didn't want backups on Saturday or Sunday when there is nobody at work. So now I'm modifying all sites to do backups on Sunday thru Thursday rather than Monday thru Friday. Malcolm
So is there a workaround? Which IDS versions does it affect? How come this has not been noticed before? I'm tempted to write an XBSA client that can query the storage manager and find out what is in there....
mweallans@panacea.co.uk wrote:
> One of the problems that has been reported on ISM is that it doesn't do
> a FULL backup of the bootstrap. There is even a bug report cncerning
> this. But I couldn't understand why one of my sites was doing a full
> backup and others were not.
> After much research I disocvered that the ISM system does a FULL backup
> of the bootstrap information if the backup is run on a Sunday, but it
> only does incremental backups on the other days.
> Now that is all very well if you do daily backups but many of the sites
> that I manage didn't want backups on Saturday or Sunday when there is
> nobody at work.
> So now I'm modifying all sites to do backups on Sunday thru Thursday
> rather than Monday thru Friday.
>
> Malcolm
>
We're running XPS 8.50.fc2 on Solaris 8, and I have found that the
bootstrap gets backed up only if onbar is run by "root", in which case
the bootstrap backup is automatic. It doesn't seem to matter what day it
is, but I will be watching it.
mjv
I had thought that the bootstrap save was automatic until I looked at the
emails generated when the savegroup is completed. That shows the level that
was performed. If it shows level 9 then it is incremental and a level of
Full means what it says.
I find this whole area very frustrating. I don't think we know enough about
it, and for such a vital area I think we should know a lot more. I didn't
find out about this until I tried to do an imported restore - which
fortunately wasn't when the system had crashed - but it might have been.
Regards
Malcolm
-----Original Message-----
From: informix-list-bounces@iiug.org [mailto:informix-list-bounces@iiug.org]
On Behalf Of Milton J. Vidrine, Jr.
Sent: 30 December 2005 01:42
To: informix-list@iiug.org
Subject: Re: Some vital information on ISM
mweallans@panacea.co.uk wrote:
> One of the problems that has been reported on ISM is that it doesn't
> do a FULL backup of the bootstrap. There is even a bug report
> cncerning this. But I couldn't understand why one of my sites was
> doing a full backup and others were not. After much research I
> disocvered that the ISM system does a FULL backup of the bootstrap
> information if the backup is run on a Sunday, but it only does
> incremental backups on the other days. Now that is all very well if
> you do daily backups but many of the sites that I manage didn't want
> backups on Saturday or Sunday when there is nobody at work.
> So now I'm modifying all sites to do backups on Sunday thru Thursday
> rather than Monday thru Friday.
>
> Malcolm
>
We're running XPS 8.50.fc2 on Solaris 8, and I have found that the
bootstrap gets backed up only if onbar is run by "root", in which case
the bootstrap backup is automatic. It doesn't seem to matter what day it
is, but I will be watching it.
mjv
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