Bug 760243
Summary: | [RFE] Support /boot as a Logical Volume | |||
---|---|---|---|---|
Product: | [Fedora] Fedora | Reporter: | Alasdair Kergon <agk> | |
Component: | lvm2 | Assignee: | Peter Rajnoha <prajnoha> | |
Status: | CLOSED WONTFIX | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | |
Severity: | low | Docs Contact: | ||
Priority: | high | |||
Version: | rawhide | CC: | agk, aperotti, arifsaha, baumanmo, bmarzins, bmr, dwysocha, gmazyland, heinzm, jbrassow, jonathan, lvm-team, mads, msnitzer, okozina, prajnoha, sbueno, zkabelac | |
Target Milestone: | --- | Keywords: | FutureFeature | |
Target Release: | --- | |||
Hardware: | Unspecified | |||
OS: | Linux | |||
Whiteboard: | ||||
Fixed In Version: | Doc Type: | Enhancement | ||
Doc Text: | Story Points: | --- | ||
Clone Of: | ||||
: | 1496229 (view as bug list) | Environment: | ||
Last Closed: | 2021-01-06 20:22:37 UTC | Type: | --- | |
Regression: | --- | Mount Type: | --- | |
Documentation: | --- | CRM: | ||
Verified Versions: | Category: | --- | ||
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | ||
Cloudforms Team: | --- | Target Upstream Version: | ||
Embargoed: | ||||
Bug Depends On: | ||||
Bug Blocks: | 1168188, 760258, 998710, 1243449, 1496229 |
Description
Alasdair Kergon
2011-12-05 17:07:37 UTC
6. include LVM in the signed UEFI grubx64.efi This bug appears to have been reported against 'rawhide' during the Fedora 19 development cycle. Changing version to '19'. (As we did not run this process for some time, it could affect also pre-Fedora 19 development cycle bugs. We are very sorry. It will help us with cleanup during Fedora 19 End Of Life. Thank you.) More information and reason for this action is here: https://fedoraproject.org/wiki/BugZappers/HouseKeeping/Fedora19 I'm closing this one as WONTFIX. My colleague Bryn Reeves, who was also looking into this, concluded this very well (citing from bug #1496229): > There are no current plans to extend LVM support to the /boot file system > for Red Hat distributions. Although support for some simple LVM2 volume > types does exist in the upstream Grub2 boot loader, this is not available on > all platforms, and the use of a logical volume for /boot conflicts with the > current direction of standards governing early boot on common PC platforms. > > The uEFI standard requires the use of a GPT partition table and a specific > GPT partition type for the "EFI System Partition" that is conventionally > used as the /boot file system on these systems. Since the uEFI standards > already mandates this volume (and require that it be located on a fixed-size > GPT partition and use a specific file system type), it is cumbersome for > both the distribution and administrators to manage an additional volume > solely for the Linux-specific files that are normally stored in this > location. > > The Boot Loader Specification (supported for optional use in Red Hat > Enterprise Linux 7 and used for system boot entries in Red Hat Enterprise > Linux 8 and later) also requires that the file system used for /boot be > readable by the platform firmware. For EFI systems this also implies the use > of a specific GPT partition and file system type. > > In addition, The Grub2 support for LVM logical volumes is a separate code > base from the main LVM2 user space project and was developed without > substantial input from the LVM2 developers. The support provided is > incomplete and has not been subject to the same level of testing and quality > engineering as the standard LVM2 tools and since the boot loader environment > provides a very restricted software runtime porting code between the LVM2 > and Grub2 projects is costly and high-risk. > > Given this and the fact that increasing adoption of the uEFI standard in new > hardware will substantially reduce the number of users able to take > advantage of these features over the coming years the team has decided not > to pursue this feature and to instead focus on improving tools for managing > system snapshots and providing rollback capabilities without the need to > place the /boot file system on an LVM2 logical volume. |