Veritas-bu

[Veritas-bu] Error in SEMAPHORE Operation

2000-08-29 15:17:51
Subject: [Veritas-bu] Error in SEMAPHORE Operation
From: Cook, Sandy SANDY_COOK AT Conseco DOT com
Date: Tue, 29 Aug 2000 14:17:51 -0500
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We just installed ACSLS and a second 9740 with pass-through port capability.
We are running bpvault 1.4 and NetBackup 3.2 with one master server and no
media servers.  We often times have to run backups at the same time as
bpvault and we are experiencing the following:
 
Semop ( ) lock failed, no space left on device
Error requesting media, error in SEMAPHORE operation
read (or write) failed error requesting media (tpreq) (98)
 
Two causes for the above error messages:
1.)  The 3 errors above occur together and backups begin to fail.  I notice
that several backups attempt to request the same media id at the same time.

2.)  Mount and dismount requests occasionally are not acknowledged.  The 3
errors above occur when a mount request is made for a drive index that the
dismount request was not acknowledged for.  Backup or vaulted image finishes
leaving the tape mounted on the drive.  (timing issue?  synchronization of
NetBackup and ACSLS databases?)   
 
Has anyone experienced these problems?  Is there a performance parameter
that needs adjusted?  Could it be a communication issue on the master server
for Veritas?      
 
Thank you,
Sandy Cook
Corporate Systems Consultant
Conseco Services, L.L.C.
Sandy_Cook AT Conseco DOT com <mailto:Sandy_Cook AT Conseco DOT com> 
Phone:  (317)817-2861

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