Lift and Shift Guide – Migrating Application Data From Older SPARC Systems to Newer SPARC Systems

Data Migration Commands

This diagram shows which Oracle Solaris commands can be used to migrate data based on the type of file system or data management that is on the source and target systems. The commands in parenthesis are secondary commands that are used with the main command to compress and decompress the data, shortening the migration duration.

This table describes the primary commands.

Table 1  Primary Data Migration Commands

Command Description Link to Example zfs send(1M) man page zfs receive(1M) man page Sends a copy of a snapshot stream to another pool on the same system or in another pool on a different system. Can be used to create incremental copies. Receives a snapshot stream. Example 1a – Migrate a ZFS File System (Full) Example 1b – Migrate a ZFS File System (Incremental) ufsdump(1M) man page ufsrestore(1M) man page Creates a copy of a UFS file system. Can be used to create incremental copies. Restores files that were created with the ufsdump command. Example 2a – Migrate a UFS File System (Full) Example 2b – Migrate a UFS File System (Incremental) diskio Creates a copy of an entire raw disk. The diskio command is available under these circumstances: In Oracle Solaris 11.3 and 11.4 In Oracle Solaris 10 when patch 151934-06 (or later) is installed. Note that diskio is only available in the global zone. Example 3 - Migrate a Whole Raw Disk dd man page Creates a copy of an individual disk slice. Example 4 – Migrate a Raw Disk Slice (Not shown in diagram) rsync(1) man page Copies files to local and remote systems. Can be used to create incremental copies. This is a versatile command because it can be used to copy files to and from UFS and ZFS file systems. However, performance might be better when using the other commands. Example 5 – Migrate Any File System With rsync

Table 2  Secondary Commands

Command Description pigz(1) man page Efficiently compresses or decompresses files through parallel processing. The pigz command is available under these circumstances: Available in Oracle Solaris 11.3 and 11.4. It is in the /usr/bin directory. Available in Oracle Solaris 10, when patch 151934-06 (or later) is installed. Note that pigz is only available in the global zone in the /opt/SUNWldm/lib/contrib directory. gzip(1) man page Compresses or decompresses files. Use this command when pigz is not available. gunzip(1) man page Compresses or decompresses files. Use this command when pigz is not available.