[DRBD-user] DRBD for the upgraded kernal

Digimer lists at alteeve.ca
Thu Jan 19 18:38:52 CET 2017

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

On 19/01/17 08:27 AM, Trevor Hemsley wrote:
> On 19/01/17 12:55, pillai bs wrote:
>> Hello Experts!
>> Am having cluster in below setup
>> CentOS: 6.3
>> Kernal : 2.6.32-279.el6.x86_64
>> Installed drbd rpms:
>>  1. drbd-kmdl-2.6.32-279.el6-8.3.11-31.el6.x86_64
>>  2. drbd-8.3.11-31.el6.x86_64
>> The setup was in good shape. Now i have a requirement to upgrade the
>> *kernal "2.6.32-279.9.1.el6.x86_64".
>> *
>> 1. Does**the above drbd version will support for this upgraded kernal
>> as well?
>> if NO, from where can i get the supported drbd rpms for this upgraded
>> kernal version.
>> if Yes, what are all the dependent libraries to get updated. Please
>> advise.
>> Thanks,
>> Madhan.
> You don't want to run either of those kernels. Both have high severity
> security vulnerabilities present and unfixed. You need to be using
> CentOS 6.8 and the latest kernel which was released last week -
> kernel-2.6.32-642.13.1.el6. You should be updating your entire system to
> 6.8 as there are numerous other high severity security vulnerabilities
> present in all versions prior to 6.8.
> You can find kmod-drbd84 packages in the ELRepo repository (actually
> there are drbd84 8.4.9 packages in elrepo-testing). DRBD 8.3 has been
> EOL for some years now and 8.4 is current in the 8.x series. ELRepo also
> has kmod-drbd83 (8.3.16) packages available but since 8.3 is EOL and you
> have to update anyway, it's probably better to skip and go straight to 8.4.
> Trevor

To add to Trevor's comments;

  *Most* cases, you can do a clean update from 8.3 to 8.4, but a few
things did change. If you must stay on 8.3, upgrade to the latest 8.3.16
(or 8.3.17, if it was released).

  In any case, you should always have a test cluster. If you don't,
please create one (even in VMs is better than nothing) to match the
current version of your cluster and test the upgrade there first. We
will never know your environment well enough to say "this is safe".

  If you want commercial support, LINBIT (the company behind DRBD)
offers commercial support and official releases.

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