> -----Original Message----- > From: centos-devel-bounces at centos.org > [mailto:centos-devel-bounces at centos.org] On Behalf Of Ross S. > W. Walker > Sent: Thursday, March 01, 2007 12:24 AM > To: The CentOS developers mailing list. > Subject: RE: [CentOS-devel] Back-port md raid1/10 BIO_RW_SYNC > patch for DRBD > > > -----Original Message----- > > From: centos-devel-bounces at centos.org > > [mailto:centos-devel-bounces at centos.org] On Behalf Of Ross S. > > W. Walker > > Sent: Thursday, March 01, 2007 12:17 AM > > To: The CentOS developers mailing list. > > Subject: RE: [CentOS-devel] Back-port md raid1/10 BIO_RW_SYNC > > patch for DRBD > > > > > -----Original Message----- > > > From: centos-devel-bounces at centos.org > > > [mailto:centos-devel-bounces at centos.org] On Behalf Of Ross S. > > > W. Walker > > > Sent: Thursday, March 01, 2007 12:03 AM > > > To: The CentOS developers mailing list. > > > Subject: RE: [CentOS-devel] Back-port md raid1/10 BIO_RW_SYNC > > > patch for DRBD > > > > > > > -----Original Message----- > > > > From: centos-devel-bounces at centos.org > > > > [mailto:centos-devel-bounces at centos.org] On Behalf Of Ross S. > > > > W. Walker > > > > Sent: Wednesday, February 28, 2007 11:32 AM > > > > To: The CentOS developers mailing list. > > > > Subject: RE: [CentOS-devel] Back-port md raid1/10 BIO_RW_SYNC > > > > patch for DRBD > > > > > > > > > -----Original Message----- > > > > > From: centos-devel-bounces at centos.org > > > > > [mailto:centos-devel-bounces at centos.org] On Behalf Of > > > Johnny Hughes > > > > > Sent: Wednesday, February 28, 2007 10:08 AM > > > > > To: CentOS-Devel > > > > > Subject: RE: [CentOS-devel] Back-port md raid1/10 BIO_RW_SYNC > > > > > patch for DRBD > > > > > > > > > > On Wed, 2007-02-28 at 02:08 -0600, Johnny Hughes wrote: > > > > > > On Tue, 2007-02-27 at 21:10 -0500, Ross S. W. Walker wrote: > > > > > > > > -----Original Message----- > > > > > > > > From: centos-devel-bounces at centos.org > > > > > > > > [mailto:centos-devel-bounces at centos.org] On Behalf > > > Of Ross S. > > > > > > > > W. Walker > > > > > > > > Sent: Sunday, February 25, 2007 12:24 PM > > > > > > > > To: centos-devel at centos.org > > > > > > > > Subject: [CentOS-devel] Back-port md raid1/10 > BIO_RW_SYNC > > > > > > > > patch for DRBD > > > > > > > > > > > > > > > > > > > > > > > > Attention CentOS Developers, > > > > > > > > > > > > > > > > Here is a back-port of Lars Ellenberg's md raid1/10 > > > > > patch from 2.6.19+ > > > > > > > > to 2.6.9. It seems the md raid1 and raid10 drivers were > > > > > stripping the > > > > > > > > BIO_RW_SYNC flags on requests which caused a severe > > > > > > > > performance penalty > > > > > > > > for DRBD when writing it's meta-data to these volumes. > > > > > > > > > > > > > > > > The patch is attached as well as inlined: > > > > > > > > > > > > > > No comments? > > > > > > > > > > > > I just put it in the new CentOSPlus kernel (that I am > > currently > > > > > > testing). > > > > > > > > > > > > Should be out later today (if it works). > > > > > > > > > > > > > > > OK ... the released CentOS-Plus kernel > > > > > (2.6.9-42.0.10.plus.c4) has that > > > > > patch installed on x86_64 and i386 ... and I did install > > > it and test > > > > > with DRBD. The systems it is on are running OK. > > > > > > > > Excellect, I am currently running the patch on my x86_64 plus > > > > kernel here > > > > with no problems, and I have the OS booting off of RAID1, I > > > have the > > > > meta-data as a LVM on the OS vg and no problems and a > significant > > > > improvement with my large DRBD volumes. > > > > > > > > Lars did review the fixes too and gave them the ok, so > it wasn't > > > > completely without review. > > > > > > > > > > Ok, I just updated to that kernel, > > > kernel-2.6.9-42.0.10.plus.c4, and I do not see the patch in there? > > > > > > Did it miss the final cut? > > > > My bad I spoke too soon, it is in there as > > linux-2.6.9-raid-bio-rw-sync.patch. > > > > Sorry, > > Again, I don't want to be alarmist but... I think there might > be a build > problem with the latest plus kernel: > > [root at mfg-nyc-iscsi2 make]# rpm -qa | grep kernel | sort > iscsitarget-kernel-smp-0.4.14-98_2.6.9_42.0.8.plus.c4 > kernel-doc-2.6.9-42.0.10.plus.c4 > kernel-ib-1.0-1 > kernel-module-drbd-2.6.9-42.0.3.plus.c4smp-0.7.21-1.c4 > kernel-module-drbd-2.6.9-42.0.8.plus.c4smp-0.7.23-1.c4 > kernel-smp-2.6.9-42.0.10.EL > kernel-smp-2.6.9-42.0.8.plus.c4 > kernel-smp-devel-2.6.9-42.0.10.EL > kernel-utils-2.4-13.1.83 > > Looks like the plus kernel dependencies got mixed up... > > [root at mfg-nyc-iscsi2 make]# ls -l /lib/modules/ > total 32 > drwxr-xr-x 3 root root 4096 Feb 28 23:45 2.6.9-42.0.10.ELsmp > drwxr-xr-x 2 root root 4096 Dec 22 23:13 2.6.9-42.0.3.EL > drwxr-xr-x 3 root root 4096 Feb 2 17:31 2.6.9-42.0.3.ELsmp > drwxr-xr-x 4 root root 4096 Feb 24 11:13 2.6.9-42.0.3.plus.c4smp > drwxr-xr-x 4 root root 4096 Feb 28 23:45 2.6.9-42.0.8.plus.c4smp > drwxr-xr-x 2 root root 4096 Dec 22 23:12 2.6.9-42.EL > drwxr-xr-x 2 root root 4096 Feb 27 09:53 kabi-4.0-0smp > > And it's gone and installed the standard kernel. Some more bad, drbd kernel modules naming convention off: [root at mfg-nyc-iscsi2 noarch]# yum list available '*kernel*' Setting up repositories Reading repository metadata in from local files Available Packages kernel.x86_64 2.6.9-42.0.10.EL update kernel-devel.x86_64 2.6.9-42.0.10.EL update kernel-doc.noarch 2.6.9-42.0.10.plus.c4 centosplus kernel-largesmp.x86_64 2.6.9-42.0.10.EL update kernel-largesmp-devel.x86_64 2.6.9-42.0.10.EL update kernel-module-drbd-2.6.9-42.0.10.EL.x86_ 0.7.23-1.el4.centos extras kernel-module-drbd-2.6.9-42.0.10.ELlarge 0.7.23-1.el4.centos extras kernel-module-drbd-2.6.9-42.0.10.ELsmp.x 0.7.23-1.el4.centos extras kernel-module-drbd-2.6.9-42.0.10.plus.c4 0.7.23-1.el4.centos extras kernel-module-drbd-2.6.9-42.0.10.plus.c4 0.7.23-1.el4.centos extras kernel-module-drbd-2.6.9-42.0.10.plus.c4 0.7.23-1.el4.centos extras kernel-module-drbd-2.6.9-42.0.2.EL.x86_6 0.7.21-1.c4 extras kernel-module-drbd-2.6.9-42.0.2.ELlarges 0.7.21-1.c4 extras kernel-module-drbd-2.6.9-42.0.2.ELsmp.x8 0.7.21-1.c4 extras kernel-module-drbd-2.6.9-42.0.3.EL.x86_6 0.7.21-1.c4 extras kernel-module-drbd-2.6.9-42.0.3.ELlarges 0.7.21-1.c4 extras kernel-module-drbd-2.6.9-42.0.3.ELsmp.x8 0.7.21-1.c4 extras kernel-module-drbd-2.6.9-42.0.3.plus.c4. 0.7.21-1.c4 extras kernel-module-drbd-2.6.9-42.0.3.plus.c4l 0.7.21-1.c4 extras kernel-module-drbd-2.6.9-42.0.3.plus.c4s 0.7.21-1.c4 extras kernel-module-drbd-2.6.9-42.0.8.EL.x86_6 0.7.23-1.c4 extras kernel-module-drbd-2.6.9-42.0.8.ELlarges 0.7.23-1.c4 extras kernel-module-drbd-2.6.9-42.0.8.ELsmp.x8 0.7.23-1.c4 extras kernel-module-drbd-2.6.9-42.0.8.plus.c4. 0.7.23-1.c4 extras kernel-module-drbd-2.6.9-42.0.8.plus.c4l 0.7.23-1.c4 extras kernel-module-drbd-2.6.9-42.EL.x86_64 0.7.21-1.c4 extras kernel-module-drbd-2.6.9-42.ELlargesmp.x 0.7.21-1.c4 extras kernel-module-drbd-2.6.9-42.ELsmp.x86_64 0.7.21-1.c4 extras kernel-module-xfs-2.6.9-42.0.10.EL.x86_6 0.2-1 centosplus kernel-module-xfs-2.6.9-42.0.10.ELlarges 0.2-1 centosplus kernel-module-xfs-2.6.9-42.0.10.ELsmp.x8 0.2-1 centosplus kernel-module-xfs-2.6.9-42.0.10.plus.c4. 0.2-1 centosplus kernel-module-xfs-2.6.9-42.0.10.plus.c4l 0.2-1 centosplus kernel-module-xfs-2.6.9-42.0.10.plus.c4s 0.2-1 centosplus kernel-module-xfs-2.6.9-42.0.2.EL.x86_64 0.2-1 centosplus kernel-module-xfs-2.6.9-42.0.2.ELlargesm 0.2-1 centosplus kernel-module-xfs-2.6.9-42.0.2.ELsmp.x86 0.2-1 centosplus kernel-module-xfs-2.6.9-42.0.2.plus.c4.x 0.2-1 centosplus kernel-module-xfs-2.6.9-42.0.2.plus.c4la 0.2-1 centosplus kernel-module-xfs-2.6.9-42.0.2.plus.c4sm 0.2-1 centosplus kernel-module-xfs-2.6.9-42.0.3.EL.x86_64 0.2-1 centosplus kernel-module-xfs-2.6.9-42.0.3.ELlargesm 0.2-1 centosplus kernel-module-xfs-2.6.9-42.0.3.ELsmp.x86 0.2-1 centosplus kernel-module-xfs-2.6.9-42.0.3.plus.c4.x 0.2-1 centosplus kernel-module-xfs-2.6.9-42.0.3.plus.c4la 0.2-1 centosplus kernel-module-xfs-2.6.9-42.0.3.plus.c4sm 0.2-1 centosplus kernel-module-xfs-2.6.9-42.0.8.EL.x86_64 0.2-1 centosplus kernel-module-xfs-2.6.9-42.0.8.ELlargesm 0.2-1 centosplus kernel-module-xfs-2.6.9-42.0.8.ELsmp.x86 0.2-1 centosplus kernel-module-xfs-2.6.9-42.0.8.plus.c4.x 0.2-1 centosplus kernel-module-xfs-2.6.9-42.0.8.plus.c4la 0.2-1 centosplus kernel-module-xfs-2.6.9-42.0.8.plus.c4sm 0.2-1 centosplus kernel-module-xfs-2.6.9-42.EL.x86_64 0.2-1 centosplus kernel-module-xfs-2.6.9-42.ELlargesmp.x8 0.2-1 centosplus kernel-module-xfs-2.6.9-42.ELsmp.x86_64 0.2-1 centosplus kernel-module-xfs-2.6.9-42.plus.c4.x86_6 0.2-1 centosplus kernel-module-xfs-2.6.9-42.plus.c4larges 0.2-1 centosplus kernel-module-xfs-2.6.9-42.plus.c4smp.x8 0.2-1 centosplus kernel-smp.x86_64 2.6.9-42.0.10.EL update kernel-smp-devel.x86_64 2.6.9-42.0.10.EL update ______________________________________________________________________ This e-mail, and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution or copying of this e-mail, and any attachments thereto, is strictly prohibited. If you have received this e-mail in error, please immediately notify the sender and permanently delete the original and any copy or printout thereof.