[Lustre-discuss] multiple runs of lfsck with different options using same mds and ost db's

[rishi pathak]

Can lfsck be run multiple times using different set of options (options like
-l -c and -d ) using the same set of mds and ost db's.
For e.g what to expect if lfsck is run for coherence check after a MDS crash
in the following order

1.lfsck with -n (no fix)
2.lfsck to backup orphaned objects (-l option)
3.lfsck to delete  orphaned objects (will it find any after backup)
4.lfsck to  create missing OST objects MDS inodes (-c option).

In all the above runs same mdsdb and ostds's were used.
Is it advisable/mandatory to recreate mdsdb and ostdb's again after a fix is
done using lfsck.
Can all the tasks mentioned above be accomplished in a single run (i.e. can
-l -d -c be specified together)?


-- 
Regards--
Rishi Pathak
National PARAM Supercomputing Facility
Center for Development of Advanced Computing(C-DAC)
Pune University Campus,Ganesh Khind Road
Pune-Maharastra
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