[OpenAFS] Disk cache not updating

Miles Davis miles@cs.stanford.edu
Mon, 10 Jan 2005 16:12:01 -0800


On Mon, Jan 10, 2005 at 04:49:58PM -0500, Derrick J Brashear wrote:
> On Mon, 10 Jan 2005, Miles Davis wrote:
> 
> >I've seen this happen on other 1.3.76 clients, but not 1.2.X clients.
> >
> >In my example, the client seems to think all volumes on this server are
> >inaccessable, though they are from everywhere else. 'fs checkservers'
> >reports the server down on this client.
> 
> can you tcpdump -s 1500 -vv port 7001 on the client while this is 
> happening?

Interesting -- bad udp checksum?

16:11:42.551001 IP (tos 0x0, ttl  64, id 3082, offset 0, flags [none], proto 17, length: 60) CLIENT.afs3-callback > SERVER.afs3-fileserver: [bad udp cksum 4bc3!]  rx data cid 075159bc call# 23 seq 1 ser 66 <client-init>,<last-pckt> fs call get-time (32)
16:11:42.551481 IP (tos 0x0, ttl  63, id 0, offset 0, flags [DF], proto 17, length: 64) SERVER.afs3-fileserver > CLIENT.afs3-callback: [udp sum ok]  rx data cid 075159bc call# 23 seq 1 ser 44 <last-pckt> fs reply get-time 2005/01/10 16:11:42 (36)
16:11:42.551512 IP (tos 0x0, ttl  64, id 3083, offset 0, flags [none], proto 17, length: 93) CLIENT.afs3-callback > SERVER.afs3-fileserver: [bad udp cksum 157a!]  rx ack cid 075159bc call# 23 seq 0 ser 67 <client-init>,<slow-start> first 2 serial 0 reason delay ifmtu 5692 maxmtu 1444 rwind 32 maxpackets 4 (65)

-- 
// Miles Davis - miles@cs.stanford.edu - http://www.cs.stanford.edu/~miles
// Computer Science Department - Computer Facilities
// Stanford University