[LU-2925] OUT service of MDS needs bigger request buffer Created: 07/Mar/13 Updated: 15/Mar/13 Resolved: 15/Mar/13 |
|
| Status: | Resolved |
| Project: | Lustre |
| Component/s: | None |
| Affects Version/s: | Lustre 2.4.0 |
| Fix Version/s: | Lustre 2.4.0 |
| Type: | Bug | Priority: | Blocker |
| Reporter: | Liang Zhen (Inactive) | Assignee: | Liang Zhen (Inactive) |
| Resolution: | Fixed | Votes: | 0 |
| Labels: | HB | ||
| Severity: | 3 |
| Rank (Obsolete): | 7026 |
| Description |
|
this patch (http://review.whamcloud.com/#change,4940) assumes that most MDS services only need 5K as request buffer size, the only exception is "regular" service which can get large request with LOV EA information. |
| Comments |
| Comment by Liang Zhen (Inactive) [ 07/Mar/13 ] |
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wangdi, could you please comment how we calculate OUT request/reply buffer size? So I can put it into comment of patch, thanks |
| Comment by Di Wang [ 07/Mar/13 ] |
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Here is update request size static const struct req_msg_field *mds_update_client[] = {
&RMF_PTLRPC_BODY,
&RMF_UPDATE,
};
and RMF_UPDATE is a EA data, with 8K size. #define UPDATE_BUFFER_SIZE 8192 The update req includes all of updates from the create, which might include linkea (4K maxim), together with other updates, we set it to 8K now. |
| Comment by Liang Zhen (Inactive) [ 10/Mar/13 ] |
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patch is here: http://review.whamcloud.com/#change,5653 |
| Comment by Peter Jones [ 15/Mar/13 ] |
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Landed for 2.4 |