Again, you should check your st.conf


-----Ursprüngliche Nachricht-----
Von: Legato NetWorker discussion [mailto:NETWORKER AT LISTMAIL.TEMPLE DOT EDU] 
Im Auftrag von David De Maeyer
Gesendet: Donnerstag, 1. April 2004 15:10
An: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
Betreff: Re: [Networker] unstable networker 7.1.1 (running on Sun Enterprise 
250 Solaris 8)


Got a restore problem too, system was hanging on one tape (no matter in
which drive the tape was loaded)

On 1 Apr 2004, at 14:49, Krishnan, Ramamurthy (Temp) wrote:

> Are you able to restore from those drives?  An improper st.conf
> potentially causes restore (block size) problems also.
>
>> -----Original Message-----
>> From: David De Maeyer [mailto:ddm AT RUC DOT DK]
>> Sent: 01 April 2004 13:25
>> To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
>> Subject: [Networker] unstable networker 7.1.1 (running on Sun
>> Enterprise
>> 250 Solaris 8)
>>
>>
>> Hi all,
>>
>> Since few days our backup server is quite "unstable". We have 4 SDLT
>> drives connected to one SCSI bus on a Sun Enterprise 250 running
>> Solaris 8. Networker 7.1.1 is installed. We have tried to get the SCSI
>> chain as short as possible (~1.5m). Since few days tapes are declared
>> full when in reality only a few GB are written on each tapes. Problem
>> occurs randomly once on device 0cbn, once on device 6cbn, etc.
>>
>> We have tried to shorten the SCSI chain by removing one drive but the
>> problem still occurs. We proceeded by doing some hardware permutations
>> to try to isolate the problem (without success yet).Tapes are declared
>> full and can't be ejected.
>>
>> Found in the logs, concerns device 6cbn which has been physically
>> removed:
>> NetWorker media: (waiting) Waiting for 2 writable volumes to backup
>> pool 'Default' tape(s) on bart
>> NetWorker media: (notice) sdlt tape Datalogi 847 on /dev/rmt/6cbn is
>> full
>> NetWorker media: (notice) sdlt tape Datalogi 847 used 5914 MB
>> of 100 GB
>> capacity
>> NetWorker media: (warning) /dev/rmt/6cbn moving: fsr 2194:
>> drive status
>> is The end of data was reached
>> NetWorker media: (emergency) could not position Datalogi 847
>> to file 7,
>> record 2195
>> NetWorker media: (notice) Volume "Datalogi 847" on device
>> "/dev/rmt/6cbn": Cannot decode block. Verify the device configuration.
>> Tape positioning by record is disabled.
>> NetWorker media: (warning) /dev/rmt/6cbn moving: fsr 2194
>> (read): drive
>> status is Drive reports no error - but state is unknown
>> NetWorker media: (warning) /dev/rmt/6cbn reading: Error 0
>> NetWorker media: (warning) verification of volume "Datalogi
>> 847", volid
>> 4267980813 failed, can not read record 2195 of file 7 on sdlt tape
>> Datalogi 847
>> NetWorker media: (notice) verification of volume "Datalogi 847", volid
>> 4267980813 failed, volume is being marked as full.
>>
>> Later on and for other devices, once 6cbn removed:
>> NetWorker media: (warning) /dev/rmt/1cbn moving: fsf 96: drive status
>> is Not Ready, Logical Unit Has Not Self-Configured Yet
>> NetWorker media: (warning) /dev/rmt/1cbn reading: I/O error
>> NetWorker media: (warning) /dev/rmt/5cbn moving: fsf 8: drive
>> status is
>> The end of data was reached
>> NetWorker media: (warning) /dev/rmt/1cbn opening: DRIVE_STATUS_LOADING
>>
>>
>> This behavior seems to be consistent with NetWorker's policy which is
>> to declare the tape full should an error be found on it... but it
>> happens too often no matter which drive it is, no matter how old/used
>> are the tapes (recently recycled tape).
>>
>> As first step we would like to test the SCSI chain in order to make
>> sure we are not dealing with a hardware problem. Is there any
>> utilities
>> out there to make such a test? We could of course try a probe_scsi_all
>> (Solaris box).
>>
>> Did somebody experience the same unstable behavior?
>>
>> Any idea on what is going on here?
>>
>> Regards,
>> David
>>
>>
>>
>>
>> ___________________________________________________
>> David De Maeyer
>> Roskilde University Center, Department of Computer Science
>> Box 260, Hus 42.1, 4000 Roskilde, Denmark
>> voice (+45) 46 74 38 29 / fax (+45) 46 74 30 72
>>
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