Add a second kernel partition

austin987 commented

2020-11-24 11:21:39 +01:00

(Migrated from github.com)

As mentioned in https://github.com/SolidHal/PrawnOS/issues/229#issuecomment-719968121

Non-free firmware aside, I think there is solid value in providing a second kernel partition (i.e., so that the kernel can be upgraded and have the ability to revert if things break).

Once there is a second partition, https://github.com/SolidHal/PrawnOS/blob/master/scripts/InstallScripts/UpgradeKernel.sh should then be updated to write the kernel to the non-active partition (maybe with a flag to override that), and then use cgpt to update the priority of the other partition.

As mentioned in https://github.com/SolidHal/PrawnOS/issues/229#issuecomment-719968121 Non-free firmware aside, I think there is solid value in providing a second kernel partition (i.e., so that the kernel can be upgraded and have the ability to revert if things break). Once there is a second partition, https://github.com/SolidHal/PrawnOS/blob/master/scripts/InstallScripts/UpgradeKernel.sh should then be updated to write the kernel to the non-active partition (maybe with a flag to override that), and then use cgpt to update the priority of the other partition.

SolidEva commented

2020-11-28 20:53:25 +01:00

(Migrated from github.com)

I definitely see some value in this, especially on the armhf devices that will likely always use depthcharge. On arm64 devices, whatever bios/bootloader replacement ends up in use would have to have support for multiple kernel partitions for this to still be useful.
A backup kernel is always helpful when upgrading.

I definitely see some value in this, especially on the armhf devices that will likely always use depthcharge. On arm64 devices, whatever bios/bootloader replacement ends up in use would have to have support for multiple kernel partitions for this to still be useful. A backup kernel is always helpful when upgrading.

SolidEva commented

2020-12-02 03:03:00 +01:00

(Migrated from github.com)

on https://github.com/SolidHal/PrawnOS/pull/249 @rk-zero

Thanks so much for working on this. I use a c100pa on the couch that i would love to run without a wifi dongle.

Depthcharge would allow for 2 kernel partitions and switching between them by modifying the priority via cgpt - can you mod this pull request so we get 2 kernel partitions?

Thanks again, R

I understand this is a use case many folks deal with. I'm not completely clear on how being able to boot between the two is a large convenience. By booting the blobby kernel, you have already accepted that the associated filesystem/userspace has been used with the blobby kernel. In my mind, it is better to either accept the wifi blob in your kernel and just use that or find a way to cope with a wifi dongle in the name of no blobs. I'm not judging either way. Even with just the wifi blob, these machines are amazingly libre.

on https://github.com/SolidHal/PrawnOS/pull/249 @rk-zero > Thanks so much for working on this. I use a c100pa on the couch that i would love to run without a wifi dongle. > > Depthcharge would allow for 2 kernel partitions and switching between them by modifying the priority via cgpt - can you mod this pull request so we get 2 kernel partitions? > > Thanks again, R I understand this is a use case many folks deal with. I'm not completely clear on how being able to boot between the two is a large convenience. By booting the blobby kernel, you have already accepted that the associated filesystem/userspace has been used with the blobby kernel. In my mind, it is better to either accept the wifi blob in your kernel and just use that or find a way to cope with a wifi dongle in the name of no blobs. I'm not judging either way. Even with just the wifi blob, these machines are amazingly libre.

👍 1

Maccraft123 commented

2020-12-14 11:21:57 +01:00

(Migrated from github.com)

There are some notes about this on ArchWiki:
https://wiki.archlinux.org/index.php/Talk:Chrome_OS_devices#cgpt_command

There are some notes about this on ArchWiki: https://wiki.archlinux.org/index.php/Talk:Chrome_OS_devices#cgpt_command

SolidEva commented

2020-12-24 01:49:32 +01:00

(Migrated from github.com)

from @Maccraft123 s Cadmium: https://github.com/Maccraft123/Cadmium/blob/master/build-all#L44-L46
this also needs cmdline change, to set root parameter to: root=PARTUUID=%U/PARTNROFF=2

also, need some way to track which kernels from which packages are in which partitions, since uname -r isn't precise enough to tell us the full package version.

from @Maccraft123 s Cadmium: https://github.com/Maccraft123/Cadmium/blob/master/build-all#L44-L46 this also needs cmdline change, to set root parameter to: root=PARTUUID=%U/PARTNROFF=2 also, need some way to track which kernels from which packages are in which partitions, since uname -r isn't precise enough to tell us the full package version.

SolidEva commented

2020-12-24 02:04:34 +01:00

(Migrated from github.com)

Could update the partitions labels as well when using cgpt to change the priority, put the kernel image package version in the label

thanks to @Maccraft123 for suggestion partition labels :D

Could update the partitions labels as well when using cgpt to change the priority, put the kernel image package version in the label thanks to @Maccraft123 for suggestion partition labels :D

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Add a second kernel partition #243