[gpfsug-discuss] mmlsquota output question

[Buterbaugh, Kevin L]

Hi All,

We had 3 local GPFS filesystems on our cluster … let’s call them gpfs0, gpfs1, and gpfs2.  gpfs0 is for project space (i.e. groups can buy quota in 1 TB increments there).  gpfs1 is scratch and gpfs2 is home.

We are combining gpfs0 and gpfs1 into one new filesystem (gpfs3) … we’re doing this for multiple reasons that aren’t really pertinent to my question here, but suffice it to say I have discussed our plan with some of IBM’s GPFS people and they agree that it’s the thing for us to do.

gpfs3 will have a scratch fileset with no fileset quota, but user and group quotas (just like the gpfs1 filesystem currently has).  We will also move all the filesets from gpfs0 over to gpfs3 - those use fileset quotas only - no user or group quotas.

I have created the new gpfs3 filesystem, the scratch fileset within it, and one of the project filesets coming over from gpfs0.  I’ve also moved my scratch directory to the gpfs3 scratch fileset.  When I run mmlsquota I see (please note, I’ve changed names of things to protect the guilty):

kevin at gateway: mmlsquota -u kevin --block-size auto
                         Block Limits                                    |     File Limits
Filesystem type         blocks      quota      limit   in_doubt    grace |    files   quota    limit in_doubt    grace  Remarks
gpfs0     USR         no limits

                         Block Limits                                    |     File Limits
Filesystem type         blocks      quota      limit   in_doubt    grace |    files   quota    limit in_doubt    grace  Remarks
gpfs1     USR          2.008G        50G       200G          0     none |        3  100000  1000000        0     none

                         Block Limits                                    |     File Limits
Filesystem type         blocks      quota      limit   in_doubt    grace |    files   quota    limit in_doubt    grace  Remarks
gpfs2     USR          11.69G        25G        35G          0     none |     8453  100000   200000        0     none

                         Block Limits                                               |     File Limits
Filesystem Fileset    type         blocks      quota      limit   in_doubt    grace |    files   quota    limit in_doubt    grace  Remarks
gpfs3     root       USR         no limits
gpfs3     scratch    USR          31.04G        50G       200G          0     none |     2134  200000  1000000        0     none
gpfs3     fakegroup  USR         no limits
kevin at gateway:

My question is this … why am I seeing the “root” and “fakegroup” filesets listed in the output for gpfs3?  They don’t show up for gpfs0 and the also exist there.

Is it possibly because there are no user quotas whatsoever for gpfs0 and there are user quotas on the gpfs3:scratch fileset?  If so, that still doesn’t make sense as to why mmlsquota would think it needs to show the filesets within that filesystem that don’t have user quotas.  In fact, we don’t *want* that to happen, as we have certain groups that deal with various types of restricted data and we’d prefer that their existence not be advertised to everyone on the cluster.

Oh, we’re still in the process of upgrading clients on our cluster, but this output is from a client running 4.2.2.1, in case that matters.  Thanks all...
—
Kevin Buterbaugh - Senior System Administrator
Vanderbilt University - Advanced Computing Center for Research and Education
Kevin.Buterbaugh at vanderbilt.edu<mailto:Kevin.Buterbaugh at vanderbilt.edu> - (615)875-9633



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