- ONTAP 9
- VMware ESXi
- An all paths down (APD) timer is started when there has been a 5 second period with no communcation on any given TCP stream
- After 140 seconds of being in this state, the connection is considered lost and an APD timeout is reached
- Possible errors seen in VMware logs include, but not limited to:
YYYY-MM-DD T00:26:51.504Z: [APDCorrelator] xxxxxxxxxxxxxus: [esx.problem.storage.apd.timeout] Device or filesystem with identifier [xxxxxxxx-xxxxxxxx] has entered the All Paths Down Timeout state after being in the All Paths Down state for 140 seconds. I/Os will now be fast failed.
NFSLock: 608: Stop accessing fd 0x410011446d28 3
NFS: 133: Lost connection to the server 192.168.0.1 mount point /vol/datastore, mounted as xxxxxxxxx-xxxxxxxx-0000-000000000000 (“datastore”)
StorageApdHandler: 248: APD Timer started for ident [xxxxxxxx-xxxxxxxx]
StorageApdHandler: 846: APD Start for ident [xxxxxxxx-xxxxxxxx]!
StorageApdHandler: 277: APD Timer killed for ident [xxxxxxxx-xxxxxxxx]
StorageApdHandler: 902: APD Exit