On 07/07/2018 11:53 PM, Michał Górny wrote: > Dnia 8 lipca 2018 08:08:31 CEST, Zac Medico <zmed...@gentoo.org> napisał(a): >> Please review. >> >> Title: Portage rsync hardlink support >> Author: Zac Medico <zmed...@gentoo.org> >> Posted: 2018-07-11 >> Revision: 1 >> News-Item-Format: 2.0 >> Display-If-Installed: sys-apps/portage >> >> For users of the rsync tree, beginning with sys-apps/portage-2.3.42, >> the default behavior for sync operations will use hardlinks in order >> to ensure that a repository remains in a valid state if something >> goes wrong [1]. For example, if signature verification fails during a >> sync operation, the new hardlink behavior will preserve the previous >> state of the repository. >> >> The new behavior may conflict with configurations that restrict the >> use of hardlinks, such as overlay filesystems. Therefore, users will >> have to set "sync-allow-hardlinks = no" in repos.conf if they have >> a configuration that restricts the use of hardlinks, but this should >> not be very common: >> >> [DEFAULT] >> sync-allow-hardlinks = no >> >> [1] https://bugs.gentoo.org/660410 sys-apps/portage: use rsync >> --link-dest to implement atomic repository updates (and abort if >> signature verification fails) > > Is safe git syncing implemented already? If not, maybe finish it first and > cover both with a single news item. Git is going to be more efficient here, > so people may want to learn they have an alternative.
Yeah there's already a patch for git sync [1] but I'd rather not make this news item more complicated than it needs to be. I wouldn't have bothered with a news item except that I want to give people some warning in case they are using overlayfs [2]. I think the efficiency difference between rsync and git here are pretty negligible for most people. [1] https://bugs.gentoo.org/660372 [2] https://www.brunsware.de/blog/gentoo/portage-tree-squashfs-overlayfs.html -- Thanks, Zac
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