From: Keith Ball <kb...@redlineperf.com> To: gpfsug-discuss@spectrumscale.org Cc: Bcc: Date: Sun, 3 Dec 2017 16:13:13 -0500 Subject: Smallest block quota/limit and file quota/limit possible to set? HI All,
We have a system where all users have their own private group as well. However, for a given fileset (we are using --perfileset-quota), we would like to ONLY allow users who also belong to just a few central groups to be able to write to the fileset. That is, user "userA" has its own "groupA", but we only want the user to be able to write to the fileset if: - userA belongs to one of the groups (e.g. group1, group2, group3) that have explicitly set quotas - The group(s) in question are within quota/limits. In general, we do not want any users that do NOT belong to one of the three groups with enabled quotas to be able to write anything at all to the fileset. Is there a way to set a ZERO quota for block/file in GPFS, that means what it actually should mean? i.e. "Your limit is 0 file = you cannot create files in this fileset". Creating some kind of "supergroup" owner of the fileset (with entitled users as members of the group) could work, but that will only work for *one* group. If we cannot set the block and file limits to zero, what *are* the smallest block and fie limits? In GPFS 3.5, they seem to be 1760MB for block. Is there a smallest quota for files? (blocksize is 16MB, which will be reduced to 4MB probably, in a subsequent cluster). Many Thanks, Keith -- Keith D. Ball, PhD RedLine Performance Solutions, LLC web: http://www.redlineperf.com/ email: kb...@redlineperf.com <aqualkenb...@redlineperf.com> cell: 540-557-7851 <(540)%20557-7851>
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