[LU-16921] CSDC: ensure that DoM and CSDC work together Created: 21/Jun/23 Updated: 20/Sep/23 Resolved: 20/Sep/23 |
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| Status: | Closed |
| Project: | Lustre |
| Component/s: | None |
| Affects Version/s: | None |
| Fix Version/s: | None |
| Type: | Task | Priority: | Minor |
| Reporter: | Colin Faber | Assignee: | Sarah Liu |
| Resolution: | Done | Votes: | 0 |
| Labels: | None | ||
| Issue Links: |
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| Severity: | 3 | ||||||||
| Rank (Obsolete): | 9223372036854775807 | ||||||||
| Epic Link: | CSDC: Testing | ||||||||
| Description |
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As part of the CSDC testing, we should ensure that both CSDC and DoM work together properly |
| Comments |
| Comment by Andreas Dilger [ 22/Jun/23 ] |
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With compressed data being written by the client, it potentially becomes possible to pack a considerable amount of data directly into the MDT inode with DoM together with the ext4 inline_data feature. Currently, the inline_data feature might allow ~512 bytes of data to be stored directly in the 1024-byte MDT inode (after layout and other xattrs are added), but with compression this might be 1-2KiB depending on the file contents. Note however, that there is some development work needed for inline_data to work together with the dir_data feature. |
| Comment by Sarah Liu [ 20/Sep/23 ] |
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EX-7806 has not landed yet, close the ticket and verify when it lands |