Support for larger than 1MB sequential I/O RPCs (LU-1431)

[LU-2756] increase OST_BUFSIZE to allow multiple request handling Created: 05/Feb/13  Updated: 25/Mar/13  Resolved: 25/Mar/13

Status: Resolved
Project: Lustre
Component/s: None
Affects Version/s: Lustre 2.4.0
Fix Version/s: Lustre 2.4.0

Type: Technical task Priority: Blocker
Reporter: Andreas Dilger Assignee: Liang Zhen (Inactive)
Resolution: Fixed Votes: 0
Labels: MB

Rank (Obsolete): 6689

 Description   

Similar to LU-2424 patch http://review.whamcloud.com/4940, the OST_BUFSIZE should be increased to allow for multiple requests to be handled in a single buffer along with a corresponding reduction in OST_NBUFS. This should only be done for the OST_IO_PORTAL and not the other small request portals.

Otherwise, if we want to increase the PTLRPC_MAX_BRW_SIZE again, the old OST_BUFSIZE will not be large enough and we have an immediate protocol compatibility problem again.

 Comments   
Comment by Peter Jones [ 27/Feb/13 ]

Liang

Could you please look into this one?

Thanks

Peter

Comment by Liang Zhen (Inactive) [ 07/Mar/13 ]

patch is here: http://review.whamcloud.com/#change,5626

Comment by Peter Jones [ 25/Mar/13 ]

Landed for 2.4

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