To the extent that Centos releases are slightly modified RHEL5 and RHEL6 releases rebranded, the behavior is the same.
On 3/7/2014 4:18 PM, Devine, Steven wrote: > Is there any data on this behaviour on CentOS ? > > Steve Devine > Michigan State University > > > ________________________________________ > From: [email protected] [[email protected]] > on behalf of Andrew Deason [[email protected]] > Sent: Friday, March 07, 2014 11:03 AM > To: [email protected] > Cc: [email protected] > Subject: [OpenAFS-announce] OpenAFS client crashes on RHEL 5.10 and RHEL 6.5 > > It has been discovered that the OpenAFS client interacts poorly with a > change to the Linux kernel introduced in Red Hat Enterprise Linux > versions 5.10 and 6.5, which can cause a kernel panic with certain AFS > access patterns. Sites may want to exercise caution when considering > upgrading RHEL systems that are running OpenAFS clients. > > While the mechanism that is causing this problem is understood and a > solution is being developed, fixing this issue is not straightforward > and may take some time. In the meantime, without a fix in place, the > following workarounds may help avoid encountering the issue: > > - Avoid using multiple different mountpoints to access the same data, > since this can confuse the Linux VFS in some situations. This may be > difficult to guarantee (since /afs/cellname and /afs/.cellname > usually exist), but it may be possible to reduce such mountpoint > usage in some scenarios. > > - Avoid running the RHEL 5.10 kernel or the RHEL 6.5 kernel on machines > with OpenAFS clients. However, these kernel updates contain stability > and security fixes, so it may not be desirable to avoid upgrading > such machines running OpenAFS clients. > > Note that the RHEL 7 Beta is not affected by this issue, but it is not > known if the final release of RHEL 7 will. No other distributions of > Linux are known to be affected by this (except any that are derived from > RHEL), and the problematic change to the Linux kernel is not in vanilla > upstream Linux kernel releases. > > If your site has a support contract with Red Hat, you may wish to > inquire about this issue through your support channel. For reference, > the issue was introduced in RHEL5 in kernel 2.6.18-367.el5 with this > change: > > - [fs] vfs: stop d_splice_alias creating directory aliases (J. Bruce Fields) > [785916] > > and in RHEL6 in kernel 2.6.32-408.el6 with this change: > > - [fs] vfs: stop d_splice_alias creating directory aliases (J. Bruce Fields) > [820446] > > For more details and future updates on this issue, see this RT ticket: > <https://rt.central.org/rt/Ticket/Display.html?id=130273&user=guest&pass=guest> > > -- > Andrew Deason > [email protected] > _______________________________________________ > OpenAFS-announce mailing list > [email protected] > https://lists.openafs.org/mailman/listinfo/openafs-announce > _______________________________________________ > OpenAFS-info mailing list > [email protected] > https://lists.openafs.org/mailman/listinfo/openafs-info >
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