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Tech-Notes
Description
SyncIQ has several **STF_PHASES** that represent different stages of the data replication process. These phases ensure that all changes, deletions, and additions are accurately replicated between the source and target clusters:
1. **STF_PHASE_SUMM_TREE**: Enumerates changed LINs (Logical Inode Numbers) to identify modifications. 2. **STF_PHASE_CC_DIR_DEL**: Enumerates deleted directories. 3. **STF_PHASE_CC_DIR_CHGS**: Enumerates added or changed directories. 4. **STF_PHASE_CT_FILE_DELS**: Transfers the list of deleted files. 5. **STF_PHASE_CT_DIR_DELS**: Transfers the list of deleted directories. 6. **STF_PHASE_CT_FILE_CHGS**: Transfers the list of changed files. 7. **STF_PHASE_CT_DIR_CHGS**: Transfers the list of changed directories. 8. **STF_PHASE_TW**: Treewalk phase, which scans the file system to catalog files and directories for synchronization.
Common Issues with STF_PHASE_TW in SyncIQ:
Performance Slowdowns: The treewalk phase can be time-consuming, especially in environments with a large number of files and complex directory structures. This can lead to significant delays in the replication process.
Network Configuration Issues: Problems such as mismatched MTU settings (e.g., using jumbo frames when the network does not support them) can cause SyncIQ jobs to fail. This is often seen when the network infrastructure does not support the larger packet sizes required for jumbo frames.
File System Changes: If there are ongoing changes to the file system during the treewalk phase, it can lead to inconsistencies and potential errors