[LU-249] Allow the user to set the upper limit to the thread count on the MDS

• Type: Improvement
• Resolution: Fixed
• Priority: Blocker
• Fix Version/s: Lustre 1.8.8
• Affects Version/s: Lustre 2.1.0
• Environment: Very large scale system such as jaguarpf are affect but this limitation
• Bugzilla ID: 23,594
• Assignee: Lai Siyao
• Reporter: James A Simmons

Description

Currently the largest number of the threads that can exist on the MDS is 512. For very large system is those threads can easily be exhausted and end up back logging the system. This patch allows the user to define the upper limit of how many threads are created on the MDS. If not selected the default behavior of 512 is keep.

Issue Links

• Trackbacks: Changelog 1.8 Changes from version 1.8.7wc1 to version 1.8.8wc1 Server support for kernels: 2.6.18308.4.1.el5 (RHEL5) Client support for unpatched kernels: 2.6.18308.4.1.el5 (RHEL5) 2.6.32220.13.1.el6 (RHEL6) Recommended e2fsprogs version: 1.41.90....