Date: Sun, 29 Jul 2007 20:27:54 +0000 (UTC) From: Kris Kennaway <kris@FreeBSD.org> To: ports-committers@FreeBSD.org, cvs-ports@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: ports/Tools/portbuild/scripts claim-chroot clean-chroot cleanup-chroots Message-ID: <200707292027.l6TKRs0S072327@repoman.freebsd.org>
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kris 2007-07-29 20:27:54 UTC
FreeBSD ports repository
Modified files:
Tools/portbuild/scripts claim-chroot clean-chroot
cleanup-chroots
Log:
Support builds using zfs and tmpfs backing store
zfs:
* Enabled by use_zfs=1 in portbuild.conf
* Populate build chroots by cloning a zfs snapshot instead of maintaining
many duplicate copies. In principle this is very efficient since
everything is copy-on-write and zfs snapshot creation is almost
instantaneous. There might be additional overheads from building on zfs
though. Currently the snapshot base is hard-wired to y/${branch}@base
but should be parametrized. This also must be populated beforehand, e.g.
during machine startup
* Clean build chroots by just destroying the snapshot.
tmpfs:
* Enabled by use_tmpfs=1 and tmpfs_size in portbuild.conf
* The previous md strategy of mounting in used/, populating and then
remounting (to avoid possible races from multiple builds claiming the
same chroot) doesn't work here because tmpfs instances are destroyed at
umount. I am not entirely sure the simpler approach is free from races.
Revision Changes Path
1.10 +19 -4 ports/Tools/portbuild/scripts/claim-chroot
1.14 +16 -2 ports/Tools/portbuild/scripts/clean-chroot
1.7 +5 -1 ports/Tools/portbuild/scripts/cleanup-chroots
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