Messages in this thread | | | Date | Thu, 17 Nov 2011 12:05:53 +0100 | From | John Hughes <> | Subject | Re: [PATCH] Don't hang user processes if Kerberos ticket for nfs4 mount expires |
| |
On 17/11/11 02:38, Jeff Layton wrote: > Note too that the gssd code distinguishes between an expired TGT and a > non-existent credcache. The latter will give you the error you desire > here. So one possibility is just to remove the credcache from /tmp in > this situation.
Something to scan /tmp for expired credentials and zap em? rpc.gssd would communicate that to the kernel?
Whadaya know, that works.
With the 3.1-rc10 kernel I let my ticket expire, did a ls - it hangs.
Now, from another terminal I do a kdestroy on my ticket cache, and (a second or so later) the ls gets an EPERM.
So this behaviour can be changed from userland with no changes to the kernel, rpc.gssd or anything else.
Some fun racing possibilities.
| |