APAR status
Closed as program error.
Error description
Given the following conditions when multiple backups are running at the same time, - PRIMARY and COPY STGPOOL are used with enabling simultaneous write operation. - PRIMARY and COPY STGPOOL are tape library device. - Number of writable private volumes is less than number of running backup processes. - No scratch volumes are available A backup session attempts to open two volumes in each PRIMARY and COPY asynchronously and if all volumes are in use by other backup sessions, a later backup session usually waits for a volume being available. However, before waiting on the 2nd volume, it checks if there are any other backup sessions waiting on the 1st volume that is already opened. If any waiters are on the 1st volume, the backup fails with the following error to avoid the potential deadlock. --- ANS1425E The image operation for volume filespace-name cannot be retried because of a severe error. ANS1228E Sending of object 'object-name' failed ANS1312E Server media mount not possible ANS1813E Image Backup processing of 'filespace-name' finished with failures. --- Even though the backup fails due to above reason, no error is recorded in ACTLOG except ANR1405W warning message, so it is difficult to determine the reason why a backup ended with failure. --- ANR1405W Scratch volume mount request denied - no scratch volume available. --- The goal of this APAR is to add new error in ACTLOG that describes the cause of the backup failure. Tivoli Storage Manager Versions Affected: 5.5, 6.x Initial Impact: Medium Additional Keywords:
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All Tivoli Storage Manager server users with * * * * limited or no scratch tapes available. * **************************************************************** * PROBLEM DESCRIPTION: See ERROR DESCRIPTION. * **************************************************************** * RECOMMENDATION: Apply fixing level when available. * * This problem is currently projected to be * * fixed in level 6.3.4. Note that this is * * subject to change at the discretion of * * IBM. * **************************************************************** *
Problem conclusion
This problem has be resolved. The following new message was created for the described situation: ANR1948W Volume mount request for <volume name> denied - server operation cannot wait for the volume. Explanation: If an operation acquired a volume and a second operation waits for that same volume, the first operation does not wait to acquire any other volumes. If the first operation was allowed to wait for another volume, a deadlock could occur. System action: Server operations continue, volume acquisition may be tried again, including attempts to mount scratch tapes, but the server operation does not wait to acquire the volume. User response: If the server operation succeeds, no action is required. However, if the operation fails, you need to supply more scratch tapes to the storage pool. Affected platforms: AIX, HP-UX, Linux, Solaris, and Windows.
Temporary fix
Comments
APAR Information
APAR number
IC89088
Reported component name
TSM SERVER
Reported component ID
5698ISMSV
Reported release
55L
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2012-12-13
Closed date
2013-02-01
Last modified date
2013-02-01
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
TSM SERVER
Fixed component ID
5698ISMSV
Applicable component levels
R63A PSY
UP
R63H PSY
UP
R63L PSY
UP
R63S PSY
UP
R63W PSY
UP
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Document Information
Modified date:
01 February 2013