Return
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Title
Command failed- reinitializing driver Tape library attached to a Netapp Filer -
Description
Backups jobs start failing after writing for some minutes
Information YYYY/MM/DD HH:MM:SS 552 Data Plugin XXX NDMP: NORMAL 17: DUMP: Day Month DD HH:MM:SS YYYY : We have written 33555845 KB.Information YYYY/MM/DD HH:MM:SS 552 Data Plugin XXX NDMP: NORMAL 18: DUMP: Day Month DD HH:MM:SS YYYY : We have written 74414212 KB.Error YYYY/MM/DD HH:MM:SS 552 Media XXX Command failed, re-initializing driverError YYYY/MM/DD HH:MM:SS 552 Media XXX 'tape: DRIVE 1: NetappFiler has gone downFrom the sub logs for Command-failed, reinitializing driver we see this:
1 SCSI :17833 14 0 234325.870236 CMD PREVENT/ALLOW MEDIA REMOVAL [ 1e 00 00 00 00 00 ]2 CAMNDMP :17833 125 0 234325.870243 Generic flags 0, In 0 Out 0, (nil), Time 900000 len 6 Cmd 1e1 CAMNDMP :17833 157 0 234325.870247 CMD 1e 00 00 00 00 000 NDMP :17833 1630 0 234325.870250 Channel is down4 NDMP :17833 1712 0 234325.870254 FALSE = NdmpMessageInterchangeInternal(0xfff1836c, 0x9a9ea40, 775, 0x9adf728, TRUE)1 SCSI :17833 15 0 234325.870257 CMD failed: errno 0 -
Cause
These CMD messages refer to communication-related issues between the Netapp and the tape drive.Netapp issues command to drive that it's not able to perform. -
Resolution
Use these commands on the Netapp filer if the library appears as connected after the issue.
Check what type of loop backport it's connected to.The library allows the selection of the following Fiber channel port behaviors: v LN Port: (default setting) - an automatic configuration that tries arbitrated loop first, then switched fabric v L Port - arbitrated loop v N Port - point to point protocol in a switched fabric topology:- sysconfig -m
- sysconfig -t
- sysconfig -a
If the tape library does not appear as listed or something is missing there, it is recommended to check it out with the product vendor.