Oracle ZFS Storage Appliance: BUI reports "system.multicall() attempted to return 1048576 bytes, exceeding maximum of 917504 bytes"

Asset ID:	1-72-2178886.1
Update Date:	2016-09-02
Keywords:

Solution Type Problem Resolution Sure

Solution 2178886.1 : Oracle ZFS Storage Appliance: BUI reports "system.multicall() attempted to return 1048576 bytes, exceeding maximum of 917504 bytes"

Applies to:

Oracle ZFS Storage ZS3-2 - Version All Versions to All Versions [Release All Releases]
Sun ZFS Storage 7320 - Version All Versions to All Versions [Release All Releases]
Sun ZFS Storage 7420 - Version All Versions to All Versions [Release All Releases]
Sun ZFS Storage 7120 - Version All Versions to All Versions [Release All Releases]
7000 Appliance OS (Fishworks)

Symptoms

After creating 229 config backups, the following error is observed in the BUI when you click on "maintenance -> system."

error: An unanticipated system error occurred: system.multicall() attempted to
return 1048576 bytes, exceeding maximum of 917504 bytes

This may be due to transient failure, or a software defect. If this problem
persists, contact your service provider.

Cause

This is expected behavior when we exceed 229 configuration backups on the ZFS Storage.

Solution

Clean up and delete old configuration backups.

Workaround for the TSC to delete old config backups:

1. Power down passive head.

2. From Owner head disable akd.

3. Dump a list of config backups -

# for f in /var/ak/stash/com/sun/ak/xmlrpc/object/*; do aknv $f/obj | grep 'type = conf' && echo $f && ls -l $f; done>/var/ak/dropbox/confstash.out

4. Review list and remove enough older config backups in stash to get it under 220 or so config backups.

5. Start akd

6. The CLI and BUI can now be used again to remove the config backups again.

7. Cust will need to continue to clean up backups to keep them under ~220.

8. Power up passive head after work is complete.

References

<BUG:21623920> - AKD CANNOT HANDLE LARGE LIST OF CONFIG BACKUPS

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