==> Regarding Re: [autofs] BUG: autofs4 + cd /net/<Netapp>/vol/vol[0-3] = port usage problems; Ian Kent <[EMAIL PROTECTED]> adds:
raven> On Tue, 18 Jan 2005, Jeff Moyer wrote: >> ==> Regarding Re: [autofs] BUG: autofs4 + cd /net/<Netapp>/vol/vol[0-3] >> = port usage problems; Ian Kent <[EMAIL PROTECTED]> adds: >> raven> On Mon, 17 Jan 2005, Jeff Moyer wrote: >> >> ==> Regarding Re: [autofs] BUG: autofs4 + cd >> /net/<Netapp>/vol/vol[0-3] >> = port usage problems; [EMAIL PROTECTED] >> adds: >> >> raven> On Fri, 14 Jan 2005, David Meleedy wrote: >> >> >> Ian, I have installed the multi-over patch into our version of the >> >> >> automounter 4.1.3-67 (with updated large-program-map patch) and so >> far >> >> everything looks great! I am going to test our machines for a >> longer >> >> period of time and make sure everything looks stable, but >> so far, so >> >> good! >> >> raven> That sounds very encouraging. Great! >> >> Very encouraging indeed. Good catch, Ian! >> >> >> >> >> It seems to have eliminated the "BUG" message in the messages >> file, >> and >> it seems as though the automounter can unmount >> /net/aflac which >> it was >> not able to do in the past during a >> reboot. I suspect that >> this means >> it will use a lot less ports, >> and I might not even need >> the kernel patch >> (given the small amount >> of mounts we actually use) >> -- I am testing this >> as well. >> >> raven> The BUG messages were placed there to identify this happening as raven> this problem has come up in various forms several times. >> >> raven> In this case it appears to be caused by the order in which the raven> mounts are done (ie. received from auto.net). Given that current raven> autofs implementation of multi-mounts must handle them as a single raven> unit, nested filesystem mounts, made in the wrong order, cause raven> overmounting which caused the umount problem. >> >> raven> Perhaps. >> >> raven> Depends on whether the mount program has the patch which probes the raven> NFS server. The port usage problem still remains and I expect it raven> will continue to cause problems for us one way or another. Hopefully raven> it will be addressed in the near future. >> >> Hmm, I wonder what probing it actually does. I'll have a look and >> see >> if we can change the probe code to use non-reserved ports. >> raven> I looked at the code in an FC2 mount and found that it did quite a raven> bit of probing. >> [snip] >> raven> This just means that we need to get a handle on the objections to raven> RPC transport multiplexing and get it done. >> I forwarded Mike's patch off to Steve Dickson. However, with the >> caveats he listed, I'm not optimistic. raven> Neither am I. The patch that Trond originally did is probably a raven> better starting point. raven> There's quite a bit to do meantime such as, general testing, raven> scalability testing, dynamically allocating a new transport if a raven> request slot can't be allocated and so on. raven> There will be quite a bit more discussion on this I expect. raven> What is Steves responsibility here? Steve is our NFS maintainer. -Jeff _______________________________________________ autofs mailing list [email protected] http://linux.kernel.org/mailman/listinfo/autofs
