[OpenAFS] AFS lag

2009-03-18 Thread Abdelkader El mastour
Configuration Netbsd4 heimdal1.1 arla Openafs 1.4.5 via pkgsrc replicated root.afs root.cell RO 1000 user per server 10 servers for fileserver. 2 servers for vlserver and ptserver Our users have been experiencing some major lag accessing afs . It all began when we had an hardware problem with

Re: [OpenAFS] AFS lag

2009-03-18 Thread Felix Frank
On Wed, 18 Mar 2009, Abdelkader El mastour wrote: Configuration Netbsd4 heimdal1.1 arla You have Arla clients? Openafs 1.4.5 via pkgsrc replicated root.afs root.cell RO 1000 user per server 10 servers for fileserver. 2 servers for vlserver and ptserver This is not good. I've recently

Re: [OpenAFS] AFS lag

2009-03-18 Thread Abdelkader El mastour
On Wed, Mar 18, 2009 at 2:54 PM, Derrick Brashear sha...@gmail.com wrote: On Wed, Mar 18, 2009 at 5:35 AM, Abdelkader El mastour a.elmast...@gmail.com wrote: Configuration Netbsd4 heimdal1.1 arla Openafs 1.4.5 via pkgsrc replicated root.afs root.cell RO 1000 user per server

Re: [OpenAFS] AFS lag

2009-03-18 Thread Abdelkader El mastour
On Wed, Mar 18, 2009 at 5:30 PM, Pesce, Nicholas npe...@qualcomm.comwrote: We just experienced significant lag issues at our AFS site for vos exam and vos release issues. This seemed to be caused by a bug with Ubik callbacks (version 1.4.7) . One of our database servers was restarted then

Re: [OpenAFS] Joining the new millennium (automating backups)

2009-03-18 Thread Kevin Coffman
On Wed, Mar 18, 2009 at 1:49 PM, Rich Sudlow r...@nd.edu wrote: Kevin Coffman wrote: I have inherited a tape library and am looking to automate backups. (We're still using regular butc backups.) I know there is/was a script called stbutc that was once available from grand.central.org.  Is

Re: [OpenAFS] AFS lag

2009-03-18 Thread Felix Frank
I agree with Abdelkader and would recommend having at least 3 database servers. You could be walking on very thin ice with just 2. Whats the reason for this ? I'm no ubik engineer, but as far as I understand it, the protocol was not designed for even numbers of participating servers. For best

Re: [OpenAFS] AFS lag

2009-03-18 Thread Ken Hornstein
I'm no ubik engineer, but as far as I understand it, the protocol was not designed for even numbers of participating servers. For best results, three or five servers seem to be optimum. There is a lot of misinformation about Ubik out there; the voting protocol is actually not complicated, it's

Re: [OpenAFS] AFS lag

2009-03-18 Thread Derrick Brashear
On Wed, Mar 18, 2009 at 9:56 PM, Ken Hornstein k...@cmf.nrl.navy.mil wrote: I'm no ubik engineer, but as far as I understand it, the protocol was not designed for even numbers of participating servers. For best results, three or five servers seem to be optimum. There is a lot of misinformation