Re: EFI F25 LVM install does not need separate /boot partition
On 30/12/2016 19:46, Gordon Messmer wrote:
On 12/30/2016 02:19 AM, Mayavimmer wrote:
> Is it safe?
If your system boots, then probably, yes.
Actually, I just found out that might not be the case. Out of five F25
installs I tried on one machine today, the ones without separate /boot
destroyed all the others! This looks like a bug. I'll investigate when I
can. Unfortunately, as I mentioned in another post, each install takes
at least 40 minutes before it can get going due to the fsck's.
The /boot weirdness mingles with the general weirdness of multiple
installs with the same name -- fedora in this case, though mint/ubuntu
was doing it too. I wish devs would be extra careful and regular with
boot related problems, no funny stuff, considering the huge costs of
dealing with them compared to regular apps.
> If so, why does the Fedora installer propose a separate
> /boot in this EFI hardware case with GPT partitioning?
The kernel and initrd need to be in a place that GRUB2 can read them.
Anaconda can build up a lot of different storage stacks, and it's
simpler and more reliable to default to putting the kernel and initrd on
their own partition. It's more likely to produce a working system, and
beyond that, it's a lot easier to work with if you need to do any kind
of repair/recovery.
> Are there
> advantages/disadvantages? Skipping the creation of a separate /boot
> seems very convenient since a new install under LVM would only require
> one new physical partition
Well, two, at least. You need your EFI partition and your LVM
partition, at a minimum.
I beg to differ on both counts, the simplicity thing and
the two
partition minimum thing.
Most EFI Linux installs happen on machines that already have a Windows
EFI partition, along with another 3-4 maintenance ones, not to mention
other possible Linuces. Therefore each new install could in the most
common case involve only one new partition.
Also with a large number of partitions it is often conceptually and
practically simpler to reduce new partitions to one for each os.
For example today I installed Fedoras and Mints on two machines: a
laptop with 9 partitions and 6 os'es, and a server with 34 partitions
and 5 os's. And I am not done yet. You see why it is often better to
deal with the simple equation: 1 os = 1 partition? Especially now that
we have powerful container like technologies like LVM and Btrfs.
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