From: "Fabian Grünbichler" <f.gruenbichler@proxmox.com>
To: Proxmox VE development discussion <pve-devel@lists.proxmox.com>
Subject: Re: [pve-devel] [PATCH pve-kernel-meta/proxmox-ve v3] proxmox-boot: add kernel pinning functionality (#3761)
Date: Wed, 16 Feb 2022 12:29:07 +0100 [thread overview]
Message-ID: <1645010894.tkxg0q0yro.astroid@nora.none> (raw)
In-Reply-To: <20220211151547.181259-1-s.ivanov@proxmox.com>
On February 11, 2022 4:15 pm, Stoiko Ivanov wrote:
> changes v2->v3:
> * incoroporated Fabian's and Thomas' feedback - huge thanks:
> ** changed `p-b-t kernel next-boot <ver>` to `p-b-t kernel pin <ver> --next-boot`
> ** improved usage output
> ** style-fixes to proxmox-ve apt-hook
> ** 'untaint' the fd fetched from the environment in proxmox-ve apt-hook
> * fixed a glitch in the non p-b-t booted case (next-boot pin followed by a
> permanent pin cause the next-boot to be ignored)
> * output of `p-b-t kernel list` now only prints pinned versions if they are set
>
> original cover-letter for v2:
> changes v1->v2:
> * incorporated the feedback on the v1 (by Aaron and Fabian - huge thx!):
> ** a next-boot pin is now handled independently from a pin - i.e. if you
> both pin a kernel and set one for the next-boot - the system afterwards
> keeps the pinned version (instead of the latest)
> ** change from modifying /etc/default/grub to creating a snippet in
> /etc/default/grub.d/proxmox-boot-pin.cfg - I did not see a need for having
> two pinning files there (since they get written both at each relevant
> invocation anyways - thus also no need for prefixing with y_ and z_
> ** the semantics of unpin changed (it now takes an optional argument to
> remove the next-boot-pin only (made the cleanup-service cleaner)
> ** added a check to the apthook in proxmox-ve as Fabian suggested
> * changed the semantics of get_first_line - to check for file existence
> itself, since it makes using it shorter at almost all call-sites
> * fixed two perlcritic warnings in the pve apthook (which is quite
> independent of the series)
>
> again tested on 3 VMs (ext4, zfs+uefi, zfs+legacy) - but would be grateful
> if you find some use-case apart from - pin permanent, pin next-boot, reboot,
> reboot.
for the whole series:
Reviewed-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
Tested-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
not applying for now in case we want to roll this out together with the
final version of the other series.
>
>
> original cover letter of v1:
> The following series adds:
> * proxmox-boot-tool kernel pin <kabi-version> (to permanently set the
> default entry of the respective bootloader)
> * proxmox-boot-tool kernel unpin (to undo a previous pin)
> * proxmox-boot-tool kernel next-boot (to do a pin+touch a file, which causes
> an unpin on next boot)
>
> This is the first functionality which is available for 'regular grub-setups'
> (i.e. systems setup with lvm-thin with our ISO or systems installed on top
> of plain debian) as well.
>
> The first two patches are cleanup+refactoring (and should not change any
> functionality)
>
> The choices (those I think might benefit from a bit of feedback) for this
> implementation were:
> * for grub - automaticially rewrite '/etc/default/grub' (as this is where
> I'd look to check whether some default is set)
> * for systemd - set the entry in the loader.conf and not in the efivars
> (`bootctl set-default/set-once`) - mostly from my bias towards config
> files instead of UEFI vars (depending on implementation quality of the
> UEFI) - another reason was to keep the implementation close for both
> boot-loaders
> * for p-b-t booted systems the need to run `p-b-t refresh` manually
> afterwards (following the behavior of `p-b-t kernel add/remove`) could
> be changed to invoking the refresh directly (as with non-p-b-t booted
> systems). Especially since it might make sense to 'add' multiple kernels
> and then do the mount+copy+configupdate only once, whereas you can only
> pin on version anyways
>
> Tested on three VMs installed from the 7.1 ISO (UEFI+ZFS, legacy+ZFS,
> UEFI+lvm-thin).
>
> pve-kernel-meta:
> Stoiko Ivanov (4):
> proxmox-boot: return empty if file does not exist in get_first_line
> proxmox-boot: fix #3671 add pin/unpin for kernel-version
> proxmox-boot: add --next-boot option kernel pin command
> proxmox-boot: add pin/unpin functionality for non-p-b-t systems
>
> bin/proxmox-boot-tool | 97 +++++++++++++++++++++++
> debian/pve-kernel-helper.install | 1 +
> debian/rules | 3 +
> proxmox-boot/Makefile | 4 +
> proxmox-boot/functions | 45 +++++++++++
> proxmox-boot/proxmox-boot-cleanup.service | 13 +++
> proxmox-boot/zz-proxmox-boot | 8 ++
> 7 files changed, 171 insertions(+)
> create mode 100644 proxmox-boot/proxmox-boot-cleanup.service
>
> proxmox-ve:
> Stoiko Ivanov (3):
> apt-hook: fix perlcritic warnings
> apt-hook: verify that fd is numeric
> apt-hook: add check preventing the removal of pinned kernels
>
> debian/apthook/pve-apt-hook | 36 +++++++++++++++++++++++++++++++++---
> 1 file changed, 33 insertions(+), 3 deletions(-)
>
> --
> 2.30.2
>
>
>
> _______________________________________________
> pve-devel mailing list
> pve-devel@lists.proxmox.com
> https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
>
>
>
next prev parent reply other threads:[~2022-02-16 11:29 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-11 15:15 Stoiko Ivanov
2022-02-11 15:15 ` [pve-devel] [PATCH pve-kernel-meta v3 1/4] proxmox-boot: return empty if file does not exist in get_first_line Stoiko Ivanov
2022-02-11 15:15 ` [pve-devel] [PATCH pve-kernel-meta v3 2/4] proxmox-boot: fix #3671 add pin/unpin for kernel-version Stoiko Ivanov
2022-02-16 12:14 ` Oguz Bektas
2022-02-11 15:15 ` [pve-devel] [PATCH pve-kernel-meta v3 3/4] proxmox-boot: add --next-boot option kernel pin command Stoiko Ivanov
2022-02-11 15:15 ` [pve-devel] [PATCH pve-kernel-meta v3 4/4] proxmox-boot: add pin/unpin functionality for non-p-b-t systems Stoiko Ivanov
2022-02-11 15:15 ` [pve-devel] [PATCH proxmox-ve v3 1/3] apt-hook: fix perlcritic warnings Stoiko Ivanov
2022-02-11 15:15 ` [pve-devel] [PATCH proxmox-ve v3 2/3] apt-hook: verify that fd is numeric Stoiko Ivanov
2022-02-11 15:15 ` [pve-devel] [PATCH proxmox-ve v3 3/3] apt-hook: add check preventing the removal of pinned kernels Stoiko Ivanov
2022-02-16 11:29 ` Fabian Grünbichler [this message]
2022-03-04 10:18 ` [pve-devel] applied-series: Re: [PATCH pve-kernel-meta/proxmox-ve v3] proxmox-boot: add kernel pinning functionality (#3761) Thomas Lamprecht
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