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тАО09-30-2009 12:35 AM
тАО09-30-2009 12:35 AM
lvm filter in lvm.conf is changed on RHEL 5.3. All the filesystems including the OS are under the control of LVM.
After the change should i be creating the initrd image ?
cheers
Solved! Go to Solution.
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тАО09-30-2009 08:32 AM
тАО09-30-2009 08:32 AM
SolutionIf all file systems are lvm your system will not boot.
the /boot filesystem must not be LVM under RHEL 5.x or earlier.
I see no reason to create a new initrd image. If your system doesn't boot it will probably already be trashed and need an OS reinstall or a new kickstart image.
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тАО09-30-2009 10:08 AM
тАО09-30-2009 10:08 AM
Re: lvm filter
If your lvm.conf filter is intended to e.g. make the LVM use multipathed disks through the multipath devices and not by accessing the individual /dev/sd* path(s) directly, it is desirable to re-create the initrd image so that the filter will be in effect from the very beginning.
Also, next time you install a kernel update, the system will automatically generate a new initrd for it. If your lvm.conf filter has some unintended side effects when at boot time, they will then manifest themselves... and you will be very confused, as you cannot determine whether the problem was caused by the new kernel or the LVM filter without doing some early-boot troubleshooting.
It's better to recreate the initrd image now rather than leave it for later: as you've made only one configuration change, it will be easy to find and fix the problem if the computer does not boot with the new initrd.
MK
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тАО09-30-2009 10:37 AM
тАО09-30-2009 10:37 AM
Re: lvm filter
Please put some docs/resources that i could read more abt the lvm.conf changes and the initrd creation.
cheers
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тАО09-30-2009 12:33 PM
тАО09-30-2009 12:33 PM
Re: lvm filter
man lvm.conf
man mkinitrd
Bookmark this URL and refer to it as necessary:
https://www.redhat.com/docs/manuals/enterprise/
Also browse and/or search the RedHat Knowledge Base:
http://kbase.redhat.com/
For example, a search for "initrd" found these:
http://kbase.redhat.com/faq/docs/DOC-1959
http://kbase.redhat.com/faq/docs/DOC-1646
http://kbase.redhat.com/faq/docs/DOC-5351
A tip: when you search RHKB and find an article that seems somewhat relevant, use the "Tags:" links at the bottom of the article to find more articles about the same topic.
MK
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тАО10-13-2009 06:44 PM
тАО10-13-2009 06:44 PM