On Sun, 2 Jun 2013 22:01:50 -0400 Chuck Lever <chuck.lever@xxxxxxxxxx> wrote: > > On Jun 2, 2013, at 9:00 PM, Neil Brown <neilb@xxxxxxx> wrote: > > > As you probably know, since 3.7 (I think) Linux NFS has explicitly > > asked for machine credentials for certain requests rather than asking > > for root credentials as is previously did. > > This causes a regression for people who don't have any machine > > credentials configured and use "gssd -n". > > > > I gather this was discussed on the mailing list earlier this year but > > not resolved. > > It's resolved in 3.10-rc. > > The kernel will attempt to use krb5i for lease management operations. If that fails because there is no keytab available, it falls back to using AUTH_SYS. And if the server refuses to accept AUTH_SYS? I guess this is commit 79d852bf5e7691dc7 ?? It seems to say that the server should always accept AUTH_SYS ... is that right? That commit isn't tagged for -stable. So do we still need to make it work for 3.7,3.8,3.9 users? Thanks, NeilBrown > > > > I would like to re-awaken the issue and offer a resolution (which has > > been tested and found effective by a customer). > > > > Hence these three patches. The first two are minor issues that I > > stumbled over while trying to understand the problem and are not > > critical but probably should be fixed. > > > > The third addresses the above mentioned issue. It introduces a > > variable "machine_uses_root_credentials" which is similar to the > > current "root_uses_machine_credentials". It also adds a "-N" flag to > > set this variable. > > > > I'm not certain what the defaults should be. For backward > > compatibility it would be best if '-n' set the this new variable as > > well as clearing the old one, but then I'm not sure what exactly -N > > should do. > > > > Comments welcome. > > > > Thanks, > > NeilBrown > > > > > > > > --- > > > > Neil Brown (3): > > krb5_utils: remove redundant array size. > > krb5_util: don't give up on machine credential if hostname not available. > > gssd: add -N option to use root credentials as machine credentials. > > > > > > utils/gssd/gssd.c | 9 ++++++--- > > utils/gssd/gssd.h | 1 + > > utils/gssd/gssd.man | 13 ++++++++++++- > > utils/gssd/gssd_proc.c | 12 +++++++----- > > utils/gssd/krb5_util.c | 10 +++++++--- > > 5 files changed, 33 insertions(+), 12 deletions(-) > > > > -- > > Signature > > >
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