On Sun, Sep 19, 2010 at 09:10:52PM +0400, Boris Samorodov wrote: > Hi! > > On Sat, 18 Sep 2010 01:45:42 +0200 Pawel Jakub Dawidek wrote: > > > My company was in need for functionality similar to nextboot(8), but on > > boot loader level, so we can have two partitions we boot from where one > > is known to be good and the other is used for upgrades. We upgrade by > > dd(1)ing entire partition image onto unused partition, we mark it as > > try-to-boot-from-it-but-only-once, reboot and if we fail to boot from > > the new partition, we fall back to the old, good partition. If we > > succeed on the other hand, we mark the new partition as our boot > > partition and mark the other one as unused. > > > Well, how hard can it be? > > > After around two weeks of work, I ended up rewriting gptboot in large > > parts, reorganizing a lot of code, improving and extending gpart a bit > > and implementing desire functionality. > > > Here is the patch for review and test: > > > http://people.freebsd.org/~pjd/patches/gptboot.patch > > Great! Since I need to have both i386 and amd64 at my box > here are my test results: > ----- > [~]bsam_at_alya% uname -a > FreeBSD alya 9.0-CURRENT FreeBSD 9.0-CURRENT #1 r212758M: Sat Sep 18 16:13:38 MSD 2010 > bsam_at_alya:/space/FreeBSD/base/head/obj/space/FreeBSD/base/head/src/sys/ALYA amd64 > > [~]bsam_at_alya% glabel status > Name Status Components > gptid/c6053c9b-abcc-11df-b740-00251124aff4 N/A ad4p1 > label/9-amd64 N/A ad4p2 > label/swap N/A ad4p3 > label/space N/A ad4p4 > label/9-i386 N/A ad4p5 > [~]bsam_at_alya% mount > /dev/label/9-amd64 on / (ufs, local) > devfs on /dev (devfs, local, multilabel) > /dev/label/space on /space (ufs, local) > /dev/md0 on /tmp (ufs, local, nosuid, soft-updates) > procfs on /proc (procfs, local) > linprocfs on /compat/linux/proc (linprocfs, local) > linsysfs on /compat/linux/sys (linsysfs, local) > fdescfs on /dev/fd (fdescfs) > > [~]bsam_at_alya% gpart show > => 34 490234685 ad4 GPT (234G) > 34 128 1 freebsd-boot (64K) > 162 41943040 2 freebsd-ufs (20G) > 41943202 8388608 3 freebsd-swap (4.0G) > 50331810 209715200 4 freebsd-ufs (100G) > 260047010 41943040 5 freebsd-ufs (20G) > 301990050 188244669 - free - (90G) > > [~]bsam_at_alya% gpart set -a bootme -i 2 ad4 > bootme set on ad4p2 > [~]bsam_at_alya% gpart set -a bootonce -i 5 ad4 > bootonce set on ad4p5 > [~]bsam_at_alya% gpart show > => 34 490234685 ad4 GPT (234G) > 34 128 1 freebsd-boot (64K) > 162 41943040 2 freebsd-ufs [bootme] (20G) > 41943202 8388608 3 freebsd-swap (4.0G) > 50331810 209715200 4 freebsd-ufs (100G) > 260047010 41943040 5 freebsd-ufs [bootonce,bootme] (20G) > 301990050 188244669 - free - (90G) > ----- > > Install i386 kernel/world to ad4p5, successful reboot, get i386 > system. Next reboot (get amd64 system back): > ----- > [~]bsam_at_alya% gpart show > => 34 490234685 ad4 GPT (234G) > 34 128 1 freebsd-boot (64K) > 162 41943040 2 freebsd-ufs [bootme] (20G) > 41943202 8388608 3 freebsd-swap (4.0G) > 50331810 209715200 4 freebsd-ufs (100G) > 260047010 41943040 5 freebsd-ufs (20G) > 301990050 188244669 - free - (90G) > ----- > > All seems to work fine. Great, thanks for testing! > > Any comments or suggestions? > > Only one for now. With current default syslog configuration > logging to local0.warning and local0.info goes nowhere. > It will be good if those messages have traces at the > default system. Good point. I changed those to local0.notice. -- Pawel Jakub Dawidek http://www.wheelsystems.com pjd_at_FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am!
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