On Thu, 2023-05-11 at 12:52 -0500, Gregory Bartholomew wrote: > On Thu, May 11, 2023 at 10:10 AM Lennart Poettering <mzerq...@0pointer.de> > wrote: > > > > > (Moreover, read-only access doesn't cut it. If you want boot counting > > you want write access.) > > > > > Just interjecting a quick thought -- would it be possible to use FAT's > reserved sectors for the boot counting? (You can find a description of them > under the -R option in the mkfs.vfat man page.) I still think it would be > nice to be able to mirror the ESP with mdraid. But if the FAT filesystem is > writable by the bootloader, then that won't work. The reserved sectors are > specifically reserved for bootloader code by design and if write access by > the bootloader/firmware is limited to those sectors then there should be no > danger of filesystem corruption if software mirroring is used.
Given changes to the ESP should be rare, it may make more sense to just teach the system to make a copy of the contents to a separate partition whenever changes are made, rather then relying on RAID 1 in this case. It would certainly be more robust. And could even be used as a "recovery" partition if you update the contents of the second partition only after successful reboot after update of the first... Simo. -- Simo Sorce RHEL Crypto Team Red Hat, Inc _______________________________________________ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
