On 6 Nov 2010, at 14:24, Bob Ball wrote: > I am emptying a set of OST so that I can reformat the underlying RAID-6 > more efficiently. Two questions: > 1. Is there a quick way to tell if the OST is really empty? lfs_find > takes many hours to run.
lfs df -i from a client or simply df -i from the OSS node will tell you whilst the OST in on-line, when it's offline you can remount it as type ldiskfs and use ls to verify that it's really empty. > 2. When I reformat, I want it to retain the same ID so as to not make > "holes" in the list. From the following information, am I correct to > assume that the id is 24? If not, how do I determine the correct ID to > use when we re-create the file system? "tunefs.lustre --print /dev/sdj" will tell you the index in base 10. Ashley. _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
