[Lustre-discuss] Ldiskfs formatting

Lambert, Cedric cedric.lambert at hp.com
Mon Oct 14 06:34:23 PDT 2013


Hello,

Sorry for this trivial question, but I did not find the solution myself :
Everyone in the ldiskfs/ext4 community is happy since the OST formatting is quicker with the uninit_bg and lazy_itable_init features. And I appreciate a lot this feature too !
However, today for a particular test,  When I format my OSTs, I would like this task to be completely finished in order to be sure to have the maximum OSTs bandwidth when I run my benchmarks.

So, I tried the following :
--mkfsoptions="-E lazy_itable_init=0,lazy_journal_init=0"   but no success : formatting is still really quick and as soon as I mount my OST, iostats show me the formatting activity on it.

Is it still possible to format like in the old ext3 age ?

Thanks for your help
Cédric
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