Hi, I have a Lustre array (version 2.6.18-53.1.13.el5_lustre.1.6.4.3smp) which will soon be decommissioned in favor of newer hardware. Therefore this question is mostly for my personal intellectual curiosity.
I logged directly into the OSS (OSS4) and just ran a df (along with a periodic check of the log files). I last looked about two weeks ago (I know it was after 17 Feb). Anyway, the OST0007 is more full than any of the other OSTs. The default lustre stripe (I believe that is set to 1) is used. Can just one file shift the size used of one OST that significantly? What other reasonable explanation for a difference on one OST in comparison with the others? Could this cause a lustre performance hit at this point? [r...@oss4 ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/sdb1 6.3T 3.6T 2.5T 60% /srv/lustre/OST/crew8-OST0000 /dev/sdb2 6.3T 4.1T 1.9T 69% /srv/lustre/OST/crew8-OST0001 /dev/sdc1 6.3T 3.3T 2.8T 55% /srv/lustre/OST/crew8-OST0002 /dev/sdc2 6.3T 3.3T 2.7T 56% /srv/lustre/OST/crew8-OST0003 /dev/sdd1 6.3T 3.5T 2.6T 58% /srv/lustre/OST/crew8-OST0004 /dev/sdd2 6.3T 4.1T 1.9T 69% /srv/lustre/OST/crew8-OST0005 /dev/sdi1 6.3T 3.9T 2.2T 65% /srv/lustre/OST/crew8-OST0006 /dev/sdi2 6.3T 5.0T 1015G 84% /srv/lustre/OST/crew8-OST0007 <---- /dev/sdj1 6.3T 3.4T 2.7T 56% /srv/lustre/OST/crew8-OST0008 /dev/sdj2 6.3T 3.3T 2.7T 56% /srv/lustre/OST/crew8-OST0009 /dev/sdk1 6.3T 3.4T 2.7T 56% /srv/lustre/OST/crew8-OST0010 /dev/sdk2 6.3T 3.8T 2.2T 64% /srv/lustre/OST/crew8-OST0011 Still learning.... megan _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
