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Download IBM Spectrum Scale (formerly GPFS)
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100.00 % complete on Thu Nov 6 00:56:14 2014 Scan completed successfully. [root on ghana][/tmp] => 10.Verify that all down NSDs at the KGN site are now available. Use the mmlsdisk command to verify that the status availability is in the “up” state. See Example 7-28. Example 7-28 Use mmlsdisk to verify disks in file system gpfs1 are now up [root on ghana][/tmp] disk driver name type ------------ -------gpfs1nsd nsd gpfs2nsd nsd gpfs3nsd nsd gpfs4nsd nsd gpfs5nsd nsd gpfs6nsd nsd gpfs7nsd nsd [root on ghana][/tmp] => mmlsdisk gpfs1 sector failure holds size group metadata ------ ------- -------512 3001 yes 512 3001 yes 512 3001 yes 512 3002 yes 512 3002 yes 512 3002 yes 512 3003 no => holds data ----yes yes yes yes yes yes no status ------------ready ready ready ready ready ready ready availability -----------up up up up up up up storage pool -----------system system system system system system system 11.Rebalance the /gpfs1 file system. Use the mmrestripefs command with the -b option to rebalance all files for all disks. See Example 7-29. Example 7-29 mmrestripefs rebalances the file system and restores the replication of all files [root on ghana][/tmp] => mmrestripefs gpfs1 -b Scanning file system metadata, phase 1 ... Scan completed successfully. Scanning file system metadata, phase 2 ... Scan completed successfully. Scanning file system metadata, phase 3 ... Scan completed successfully. Scanning file system metadata, phase 4 ... Scan completed successfully. Scanning user file metadata ... 0.44 % complete on Thu Nov 6 01:01:40 2014 0.62 % complete on Thu Nov 6 01:02:00 2014 100.00 % complete on Thu Nov 6 01:02:07 2014 Scan completed successfully. [root on ghana][/tmp] => -N all ( ( 204572 inodes 505332 inodes 370 MB) 519 MB) 12.Verify that gpfs1 is mounted on all nodes at all sites. Use the mmlsmount command to verify. See Example 7-30. Example 7-30 The gpfs1 is mounted on all nodes at all sites after the KGN site recovers [root on ghana][/tmp] => mmlsmount all -L File system gpfs1 is mounted on 5 nodes: 10.11.12.121 mexico 10.11.12.122 japan 10.11.12.125 england 10.11.12.123 france 10.11.12.124 ghana [root on ghana][/tmp] => Chapter 7. Backup and disaster recovery using IBM Spectrum Scale 361
