On 01/04/14 14:27, Keith Keller wrote: > On 2014-04-01, Tom Robinson <tom.robinson@xxxxxxxxxxxx> wrote: >> Now, I understand that Red Hat (and therefore CentOS) backport many upstr= >> eam features into the stock >> kernel so how can I be sure that kernel 2.6.32-431.11.2.el6 has write bar= >> rier support? > I believe you can look through the RHEL tech notes. Here they are for > 6.5: > > https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html-single/6.5_Technical_Notes/index.html > > If you require barriers, you can always use the mainline kernel from > elrepo. You can read about the mainline and long-term packages here: > > http://elrepo.org/tiki/kernel-lt > > You probably want the kernel-ml packages, but that page doesn't mention > the -lt packages. Lots of CentOS admins use these kernels (including > me) and are happy with them. > > Thanks Keith. I took a look at the RHEL tech notes but nothing obvious springs out of that regarding LVM barriers. I wouldn't have imagined it would be so hard to find and answer to this question. I may go to the elrepo kernels but I'm always hesitant when it comes to changing the core of the system. Anyone else care to comment or have a clue about LVM barriers in the current kernel?
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