[LU-882] Quota code causes run away ll_ost_io thread

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.2.0, Lustre 2.1.2, Lustre 1.8.8
• Affects Version/s: Lustre 1.8.x (1.8.0 - 1.8.5)
• Environment: 1.8.2 servers run sles10sp2 and 1.8.5 servers run centos 5.5.
• Severity: 3
• Bugzilla ID: 23,858
• Assignee: Niu Yawei (Inactive)
• Reporter: Jay Lan (Inactive)

Description

This is the NASA Ames installation.

An ll_ost_io thread starts consuming 100% CPU on an OSS and eventually the OSS

becomes unresponsive (can't ssh or log in via serial console).

We had to disable quota to avoid the problems. See Bugzilla 23858.

Oracle pushed a fix to its prime b1_8. We would like Whamcloud to pick up the fix.

Issue Links

• Trackbacks: Lustre 1.8.x known issues tracker While testing against Lustre b18 branch, we would hit known bugs which were already reported in Lustre Bugzilla https://bugzilla.lustre.org/. In order to move away from relying on Bugzilla, we would create a JIRA
• 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....
• Trackbacks: Changelog 2.1 Changes from version 2.1.1 to version 2.1.2 Server support for kernels: 2.6.18308.4.1.el5 (RHEL5) 2.6.32220.17.1.el6 (RHEL6) Client support for unpatched kernels: 2.6.18308.4.1.el5 (RHEL5) 2.6.32220.17.1....
• Trackbacks: Changelog 2.2 version 2.2.0 Support for networks: o2iblnd OFED 1.5.4 Server support for kernels: 2.6.32220.4.2.el6 (RHEL6) Client support for unpatched kernels: 2.6.18274.18.1.el5 (RHEL5) 2.6.32220.4.2.el6 (RHEL6) 2.6.32.360....