[OpenAFS] problem using kpasswd

Derek Atkins warlord@MIT.EDU
Mon, 08 Mar 2004 17:55:46 -0500 

Looks like you're using the MIT Krb5 kpasswd and not AFS kpasswd.

-derek

Frode Nilsen <fronils@online.no> writes:

> Hi,
>
> when using the kpasswd command to change users password we get the
> following message:
>
> $ kpasswd
> kpasswd: No credentials cache found getting principal from ccache
> $
>
> What is the problem and how can we fix it?
>
>
> -- 
> Frode Nilsen <fronils@online.no>
>
> _______________________________________________
> OpenAFS-info mailing list
> OpenAFS-info@openafs.org
> https://lists.openafs.org/mailman/listinfo/openafs-info
>
>

-- 
       Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
       Member, MIT Student Information Processing Board  (SIPB)
       URL: http://web.mit.edu/warlord/    PP-ASEL-IA     N1NWH
       warlord@MIT.EDU                        PGP key available

>OpenAFS-info mailing list >OpenAFS-info@openafs.org >https://lists.openafs.org/mailman/listinfo/openafs-info > From nward@esphion.com Thu Feb 27 19:51:56 2003 From: nward@esphion.com (Nathan Ward) Date: Fri, 28 Feb 2003 08:51:56 +1300 Subject: [OpenAFS] Performance In-Reply-To: <583C0542-4A8B-11D7-AF86-0003930AAF98@apple.com> References: <583C0542-4A8B-11D7-AF86-0003930AAF98@apple.com> Message-ID: <3E5E6C5C.7070101@esphion.com> Well I'd expect that it goes slower as your cache size is exceeded as it then needs to start getting that data to the server. Or is the cache for read operations only? I notice that there are around about the same number of packets/sec as context switches/sec on my client machines. I wonder if switches between userland and kernel could be to blame... ? Who sends packets in OpenAFS, the userspace daemon or the kernel? Nathan emoy@apple.com wrote: > Could the slowness you see with your dd write test be related to the > cache exhaustion issue that I raised recently, when writing a file > larger than your cache size. Your test writes a 1 GB file, so if > your cache is smaller than this, you will see poor performance once > your cache size is exceeded. > ------------------------------------------------------------------------ > -- > Edward Moy > Apple Computer, Inc. > emoy@apple.com > > (This message is from me as a reader of this list, and not a statement > from Apple.) > > On Thursday, February 27, 2003, at 11:15 AM, Nathan Ward wrote: > >> I see pretty bad performance to tell you the truth. >> I can read and write ~60mb/s directly to my raid array, but when >> using OpenAFS (locally or remotely) to the same array, I get around >> 6-10MB/s, I have seen up to 25MB/s over a peice of 1000Mbps fibre. >> Client and Server are both dual P3-1ghz with 1024mb ram. I notice >> the context switches on the server at this time jump to ~10000/s, >> and on the client ~40000/s. I imagine this is the source of my >> slowdown, but I havn't had a chance to look into it. >> >> I'd be interested if anyone else has the same level of context >> switches going on. >> >> This is while doing a large sequential write operation (dd >> if=/dev/zero of=/afs/alb-nz.esphion.com/public/dd.out bs=256k >> count=4096). >> >> Michael Robokoff wrote: >> >>> Does anyone have any Open AFS performance information they can >>> share with me. I plan on doing a couple benchmarks and I would like >>> to have some idea of what to expect. >> > > _______________________________________________ > OpenAFS-info mailing list > OpenAFS-info@openafs.org > https://lists.openafs.org/mailman/listinfo/openafs-info > > From nneul@umr.edu Thu Feb 27 19:55:19 2003 From: nneul@umr.edu (Neulinger, Nathan) Date: Thu, 27 Feb 2003 13:55:19 -0600 Subject: [OpenAFS] Performance Message-ID: The user space daemon in afs doesn't do much of anything. It's there primarily to launch kernel threads and set up the cache.=20 -- Nathan ------------------------------------------------------------ Nathan Neulinger EMail: nneul@umr.edu University of Missouri - Rolla Phone: (573) 341-4841 Computing Services Fax: (573) 341-4216 > -----Original Message----- > From: Nathan Ward [mailto:nward@esphion.com]=20 > Sent: Thursday, February 27, 2003 1:52 PM > To: emoy@apple.com > Cc: Michael Robokoff; openafs > Subject: Re: [OpenAFS] Performance >=20 >=20 > Well I'd expect that it goes slower as your cache size is=20 > exceeded as it=20 > then needs to start getting that data to the server. Or is=20 > the cache for=20 > read operations only? >=20 > I notice that there are around about the same number of=20 > packets/sec as=20 > context switches/sec on my client machines. I wonder if=20 > switches between=20 > userland and kernel could be to blame... ? Who sends packets=20 > in OpenAFS,=20 > the userspace daemon or the kernel? >=20 > Nathan >=20 > emoy@apple.com wrote: >=20 > > Could the slowness you see with your dd writ