Lucian @ lastdot.org wrote:

On Wed, Nov 11, 2009 at 11:03 AM, Adrian Sevcenco Adrian.Sevcenco@cern.ch wrote:

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Hi! I have an software raid installation (md_dX type) and i am wondering what is the procedure for kernel update... is the initrd auto-magicaly rebuild?

Thank you, Adrian

Yep, as long as you are using the stock kernels, you should be safe. I use linux raid a lot and haven't had a problem. Just yum update and you're ready to go (if you upgrade from/to minor version be sure to read the release notes and erratas).

Thanks! Yes i am using the stock kernels and i asked because i use an modified mkinitrd (for raid md_dX type suport) and wanted to be sure that initrd is rebuilt at kernel update time.

Thanks, Adrian

Lucian @ lastdot.org wrote:

On Wed, Nov 11, 2009 at 11:50 AM, Adrian Sevcenco Adrian.Sevcenco@cern.ch wrote:

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Lucian @ lastdot.org wrote:

...

On Wed, Nov 11, 2009 at 11:03 AM, Adrian Sevcenco Adrian.Sevcenco@cern.ch wrote:

...

Hi! I have an software raid installation (md_dX type) and i am wondering what is the procedure for kernel update... is the initrd auto-magicaly rebuild?

Thank you, Adrian

Yep, as long as you are using the stock kernels, you should be safe. I use linux raid a lot and haven't had a problem. Just yum update and you're ready to go (if you upgrade from/to minor version be sure to read the release notes and erratas).

Thanks! Yes i am using the stock kernels and i asked because i use an modified mkinitrd (for raid md_dX type suport) and wanted to be sure that initrd is rebuilt at kernel update time.

Thanks, Adrian

Ouch, the fact that you were using a modified initrd was not obvious to me from your 1st post. I dont know if centos does this automatically for you. Maybe it's safer to create a new mkinitrd after the kernel has installed.

Now i can say that the kernel update recreate at install/update time the initrd so i didn't had any king of problem with this. (of course, having an modified mkinitrd i have in yum.conf :: exclude=mkinitrd*)