Email was unavailable for a short period of time.
During some maintenance this afternoon to do some NFS (network file
service) tuning on our mail cluster, a problem occured where the
client systems could not read the directory structure, and
subsequently, your email.
This was a tuning problem and has now been rectified on the POP and
IMAP servers.
The inbound and outbound mail servers were not affected by this and no
emails were dropped our bounced.
>From time of notification of problems to resolution was under 5
minutes. This issue did not show up during the initial 30 minutes of
testing I had been doing.
Technical issue and resolution:
Tuning of the NFS clients operating as the POP and IMAP
servers was being done by me today, and I changed over the
systems to use NFSv2 instead of NFSv3 as we do not need the
readdir++ optimizations available with v3.
I forgot to remove the rdirplus option from the mount options
and the mountpoint, while available, no longer could be read
by the clients involved. The odd part was that this issue did
not raise its ugly head until after more than 30 minutes had
gone by.
I was able to traverse the filesystem without mishap, I just
could not read any file or directory names. 'ls' always
returned nothing, yet I could change directory into the
filesystem just fine.
I have removed the rdirplus option from the mount options line
of the fstab and remounted the filesystem on the servers where
this change was made and now everything is back to normal,
albeit a little more efficient for how we use the NFS server.
Support can be reached Monday thru Friday from 8:00am until 8:00pm,
Saturdays from 11:00am until 4:00pm via phone at 612-337-6340, or via
email at [log in to unmask]
--
Mike Horwath [log in to unmask]
ipHouse - Welcome home!
