[master/f21/rhel7-branch] No more /boot on LVM for you, s390x!

Samantha N. Bueno sbueno+anaconda at redhat.com
Tue Sep 30 13:16:15 UTC 2014


On Tue, Sep 30, 2014 at 10:07:55AM +0200, Dan Horák wrote:
> On Mon, 29 Sep 2014 13:34:06 -0400
> "Samantha N. Bueno" <sbueno+anaconda at redhat.com> wrote:
> 
> > On Mon, Sep 29, 2014 at 06:00:51PM +0200, Dan Horák wrote:
> > > On Mon, 29 Sep 2014 10:28:11 -0400
> > > Chris Lumens <clumens at redhat.com> wrote:
> > > 
> > > > > This caused too many stupid problems, and it is pointless
> > > > > anyway, because /boot had to be restricted to a single PV. So,
> > > > > just make /boot on a partition instead.
> > > > > 
> > > > > I guess I need to make a blivet bug for this and reference that
> > > > > in the msg instead of the anaconda bug. Or do I? I'll find out.
> > > > 
> > > > ACK.
> > > 
> > > no objections, but it should get documented as generally the
> > > bootloader supports /boot on LV under some conditions
> >  
> > Sure thing. I'm just curious though, would you mind explaining what
> > "some conditions" since I don't believe I know? I can clone this bug
> 
> There is a section called "Logical devices" in zipl(8) man page and
> also a section "Preparing a logical device as a boot device" under
> chapter "Chapter 40. Initial program loader for System z - zipl" in the
> "Device Drivers, Features, and Commands" book [1]

Ah, this book. :) Thanks for the pointers, I will be sure to read them.

Samantha

 
> > so the docs team is aware of the changes, but actually, even going
> > through them right now, it says /boot on LVM is not actually
> > supported: "Warning
> > Placing the /boot partition on an LVM volume is not supported." 
> > https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Installation_Guide/sect-disk-partitioning-setup-s390.html#sect-create-lvm-s390
> > 
> > and here:
> > "For each new mount point you create manually, you can set its
> > partitioning scheme from the drop-down menu located in the left pane.
> > The available options are Standard Partition, BTRFS, LVM, and LVM Thin
> > Provisioning. Note that the /boot partition will always be located on
> > a standard partition, regardless on the value selected in this menu."
> > https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Installation_Guide/sect-disk-partitioning-setup-s390.html#sect-partition-configuration-s390
> > 
> > So I'm not actually sure that docs needs to make any changes here.
> 
> yeah, sounds the docs are OK
> 
> [1] http://public.dhe.ibm.com/software/dw/linux390/docu/l314dd24.pdf
> 
> 
> 		Dan
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