On Mi, 21.12.22 12:12, Demi Marie Obenour (demioben...@gmail.com) wrote: > > At least for the systemd stuff, we carefully made sure that our access > > patterns to the ESP both from sd-boot/sd-stub and from userspace are > > by default as minimal and robust as we can make them, to minimize > > chance of corruption, given that vfat is not particularly good with > > that. (i.e. we sync a lot, and the whole ESP mount is by default an > > autofs instance with an extremely short idle timeout so that it > > basically remains unmounted — and thus — clean during almost all > > times). > > > > Anyway, if you want to know more about choice of the fs for /boot/, > > see my ideas here: > > > > https://0pointer.net/blog/linux-boot-partitions.html > > > > Lennart > > Does vfat support atomic rename? Is it possible to atomically upgrade > a bootloader/UKI/etc?
Depends on the fs driver. But yeah, the filename is stored at exactly one place, and hence typically a single-sector update is possible. (well, within bounds: for example if you rename a file from a short filename to a long one, fs driver might need to allocate a bunch of separate long file name dir entries, which might then span multiple sectors) Lennart -- Lennart Poettering, Berlin _______________________________________________ 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
