Re: Problems with raidreconf and RAID-5

On Thu, Aug 22, 2002 at 02:18:21PM +0300, Mikko Saukkoriipi wrote:

  I have been testing raidreconf and I've been able to add a new disk to
a RAID-0 array, but trying to convert RAID-0 to RAID-5 or add a new disk
to RAID-5 have failed.

I see that your disks are not of equal size - I have seen one other
report of problems with the RAID-5 driver (in reaidreconf - not the
kernel RAID-5 driver) related to disks of different sizes.

  Just before the conversion has finished or some times even at
beginning I get and error "raid5_map_global_to_local: disk 0 block out
of range: 488098 (487840) gblock = 1464296" or similar and raidreconf
aborts.

Yep - very similar to that other report.

  I'll add below script of the program running as well the used raidtabs
and listings of partitiontables. The example is from adding a new disk
to a 3 drive RAID-5 array. raidreconf version is "raidreconf 0.1.1 for
mkraid version 0.90.0".

Great - thanks

Also, what file is gmon.out? It appears after running raidreconf, but
the documentation didn't mention anything about it.

That's profiling output - because raidreconf (for some reason) was
compiled with the -pg switch for gcc.

You can run "gprof raidreconf" and see which routines take up the most
CPU time   :)

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