==> Regarding RE: [autofs] automounter failing with NetApp snapmirror; [EMAIL
PROTECTED] adds:
raven> On Sat, 17 Jul 2004, Lever, Charles wrote:
>> > > hi all-
>> > >
>> > > i'm still learning about the Linux automounter, but we have > an
>> issue > > that seems to come up a lot for our customers using Linux,
>> it's > > automounter, and NetApp filers doing volume snapmirror (a >
>> file system > > replication mechanism).
>> > >
>> > > at the end of a replication event, the destination file system goes
>> > > offline for 3-4 seconds while the new version replaces it. > the
>> filer > > used to return EACCES during this period, but we've changed it
>> to > > simply ignore all RPC requests for that file system until the new
>> > > version is online, as this seems to be more client-friendly >
>> behavior.
>> > >
>> > > so now, during that time period, an automounter request to > mount
>> that > > file system will fail with "RPC: timed out" rather than getting
>> > > EACCES. is there any way we can tell the automounter to > wait
>> longer or > > retransmit another few times?
>> > >
I believe that error is produced by the mount command, itself. Poking
through the code for mount, it doesn't look like this timeout is
configurable. Autofs 4 actually checks to see if a host is alive before
attempting a mount, so at least things should work there. I'm not sure
what the best approach is to solve this problem on 3.1.7.
>> >
>> > autofs version? > kernel version? > patched/not patched? > if
>> patched which revision?
>>
>> the specific cases we're seeing right now are with RHEL AS 2.1, updates
>> 2 and 3. jeff moyer can provide you with the exact patch set used in
>> that distribution.
raven> I expect that's autofs version 3 and the stock version 3 kernel
raven> module.
AS2.1 Update 3 has autofs version 3.1.7-21. The kernel module likely
matches the code in vanilla 2.4.9, but I don't believe this code to be
suspect.
>> > Have you got any log output?
>>
>> i thought maybe there was an easy configuration option that could tune
>> the automounter's mount behavior, so i don't have any log output. but
>> i'll see what we can get. i assume you mean /var/log/messages; let me
>> know if there is a log specific to the automounter that i should be
>> looking for.
raven> It will log errors to syslog.
raven> I don't track changes to v3. Hopefully we can get Peters attention?
raven> But check the logs anyway.
raven> Jeff, can you help with versions?
See above. Chuck, feel free to file a bugzilla at
http://bugzilla.redhat.com/
and assign it to me.
Thanks!
Jeff
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