I had this problem as well with software raid after recent upgrade to
Xenial (and then after another update to Xenial packages to
2.02~beta2-36ubuntu1 — however, at about the same time (at least after
the last reboot), I've also added lvm-cache to the root partition, and
that seems to have been
FWIW, I've tried the suggestion from Metta Crawler to set
GRUB_DISABLE_LINUX_UUID=true and that didn't help.
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Title:
grub upgrade fails with lvm
This Debian wiki page https://wiki.debian.org/DebianInstaller/SataRaid
suggests that in /etc/default/grub
the line:
GRUB_DISABLE_LINUX_UUID=true
must be uncommented.
Has anyone tried that? Thanks.
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Bugs, which is
In my case this interferes with kernel installations. Post-installation
tries to update grub but the process fails and any subsequent steps are
skipped. The way around this is to remove grub-common, install the new
kernel and install grub again. Of course grub does not generate a
grub.cfg file.
Note that this also affects the oficially supported hardware Cisco UCS
C220 M3 , http://www.ubuntu.com/certification/hardware/201311-14363/ ,
where going to md raid is not possible (only boots from the swraid using
the swraid bios). Currently can't boot that machine on recent Ubuntu.
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Please note that this also affects the relatively new (~2 years old)
functionality to create raid1/raid4/raid5/raid6 type logical
volumes that use device mapper on top of Linux md RAID (rather than
requiring the use of mdadm to create an md device first).
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@psusi - once you've installed on fake RAID and upgraded successfully a
few time, the effort to convert to Linux software RAID is significant.
I've side-stepped that for now by rebuilding grub 1.99-21ubuntu3.15
(from 12.04) on Ubuntu 14.04 and putting package holds on the resulting
debs. Maybe
Some sample error messages:
$ sudo grub-install /dev/mapper/pdc_bdhbchffcb1
Installing for i386-pc platform.
grub-install: error: disk
`lvmid/PxjGc2-Eb10-CsLt-RPxa-s344-09ma-l4R47W/DpicMh-yvL3-zZVu-BmwD-5Cc9-PwRc-tAWnwT'
not found.
$ sudo grub-install /dev/mapper/vg0-lv0
Installing for
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: grub2 (Ubuntu)
Status: New = Confirmed
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Title:
grub
