Hi, You know that could be true... but if it's called from RA, 2 nodes wouldn't reach that part at the same time, right? One node will be able to reach there according to the score rule.
Thanks, Junko > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Xinwei Hu > Sent: Thursday, August 09, 2007 3:00 PM > To: High-Availability Linux Development List > Subject: Re: [Linux-ha-dev] Shared disk file Exclusiveness control program > forHB2 > > Hi, > > There's races in the sfex_lock.c. > > When 2 nodes reach sfex_lock.c:265 in the same time. > > node A: reserve lock -> wait for collision_timeout -> hold lock > node B: sleep -> sleep -> reserve > lock > > 在 星期三 08 八月 2007 12:00，NAKAHIRA Kazutomo 写道： > > Hello, all. > > > > We wrote a Shared Disk File EXclusiveness Control Program, called > > "SF-EX" for short, could prevent a destruction of data on > > shared disk file system due to Split-Brain. > > > > This program consists of CUI commands written in the C and RA, > > the former is used for managing and monitoring shared disk status > > and the latter is the same as other common RAs. > > > > We tested this program on IBM and HP platform, and we confirmed > > all functions worked well. > > > > Our test environment is listed below: > > Software: > > OS :RHEL4 ES Update5(kernel2.6.9-55.ELsmp) > > HB2:heartbeat-2.1.2-2 > > > > Hardware: > > IBM platform: > > Server : System x3650 > > Shared disk: DS 4700 (FC) > > > > HP platform: > > Server : DL380G5 > > Shared disk: MSA500G2 (SCSI) > > > > How to install and configuration are described in README. > > If you are interested in this program, please try it and > > let me know your comments. > > > > Your suggestions on how to improve are really appreciated. > > > > Best regards. > _______________________________________________________ > Linux-HA-Dev: [email protected] > http://lists.linux-ha.org/mailman/listinfo/linux-ha-dev > Home Page: http://linux-ha.org/ _______________________________________________________ Linux-HA-Dev: [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha-dev Home Page: http://linux-ha.org/
