12-26-2002
rpm and file system
Hi,
There is an option to specify rpm while creating the file system ( default - 3600 ).
Question is, If a file system which is built with default option is restored to a new disk with a higher rpm capacity, ( say 7200 rpm ), am I loosing any performance gains ?
I mean, should I go for a 'newfs ....' in the new disk with proper rpm selection and copy the contents ?
Is there significant performace gains by specifying correct rpm ?
Thanks in advance..
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LEARN ABOUT SUSE
applydeltarpm
APPLYDELTARPM(8) System Manager's Manual APPLYDELTARPM(8)
NAME
applydeltarpm - reconstruct an rpm from a deltarpm
SYNOPSIS
applydeltarpm [-v] [-p] [-r oldrpm] deltarpm newrpm
applydeltarpm -c|-C deltarpm
applydeltarpm [-c|-C] -s sequence
applydeltarpm -i deltarpm
DESCRIPTION
applydeltarpm applies a binary delta to either an old rpm or to on-disk data to re-create a new rpm. The old rpm can be specified with the
-r option, if no rpm name is provided on-disk data is used. You can use -p to make applydeltarpm print the percentage of completion, or -v
to make it more verbose about its operation.
The second an third form can be used to check if the reconstruction is possible. It may fail if the on-disk data got changed (deltarpms are
created in a way that config file changes do not matter) or the deltarpm does not match the rpm the delta was generated with. The -c option
selects full (i.e. slow) on-disk checking, whereas -C only checks if the filesizes have not changed.
Instead of a full deltarpm a sequence id can be given with the -s sequence option. Such an id contains all the information that is needed
to do reconstruction checking.
Finally information about a deltarpm can be printed with the -i option.
EXIT STATUS
applydeltarpm returns 0 if the rpm could be recreated or the checking succeeded, it returns 1 and prints an error message to stderr if
something failed.
SEE ALSO
makedeltarpm(8), rpm(8)
AUTHOR
Michael Schroeder <mls@suse.de>
Feb 2005 APPLYDELTARPM(8)