---------------------------------------- > Date: Wed, 19 Feb 2014 07:27:45 -0600 > From: bdrew...@freebsd.org > To: andrew.hot...@hotmail.com > CC: po...@freebsd.org; verma...@interia.pl > Subject: Re: [patch] sysutils/beadm > > On 2/13/2014 4:19 PM, Andrew Hotlab wrote: >> First of all, thank you very much for the good work with this port. I'm sure >> it's changing the life of a lot FreeBSD system administrators! >> >> In my setup I have the following layout (several datasets for /usr, /var, >> etc.): >> >> NAME USED AVAIL REFER MOUNTPOINT >> sys 1.55G 18.0G 31K none >> sys/ROOT 532M 18.0G 31K none >> sys/ROOT/default 114K 18.0G 250M / >> sys/ROOT/default/tmp 22K 18.0G 38K /tmp >> sys/ROOT/default/usr 1K 18.0G 245M /usr >> sys/ROOT/default/var 48.5K 18.0G 36.4M /var >> sys/swap 1.03G 19.0G 16K - >> >> At this moment the utility does not seems to be able to manage this scheme, >> since it sets the mountpoint property as "legacy" for all datasets under the >> root, thus preventing to automatically mount any subdirectory at boot. >> I've tested this simple solution (to let do the job to the canmount >> property), and it seems to solve the problem without affecting the behavior >> when all system folders are located under a single root dataset (please see >> the patch below). I'd be glad if you'll include it in the next port revision. >> > > ACK on this. CC'ing upstream maintainer too. > > I run the same setup but I specifically set /usr /var and /tmp mntpoints > to /usr,/var/,/tmp to avoid this issue. I am not sure if mntpoint=/ is > proper. I recall there being an issue with it. I would much prefer your > patch though if it is safe. > > Does beadm mount still work with this to mount a new BE into /tmp? > > Ie, > > beadm create newbe > beadm mount newbe > > Does it go and remount / or only touch /tmp? >
It seems to behave correctly, as you can see in the attached transcript. > How about activating? Does it blow away / right away or wait until reboot? Since beadm changes only the "canmount" ZFS property to set the active environment for the next reboot, there is no implications for the running environment. Regards Andrew
root@BETEST:~ # zfs list -t all NAME USED AVAIL REFER MOUNTPOINT sys 1.55G 18.0G 31K none sys/ROOT 535M 18.0G 31K none sys/ROOT/RELENG_9_2 535M 18.0G 251M / sys/ROOT/RELENG_9_2/tmp 36K 18.0G 36K /tmp sys/ROOT/RELENG_9_2/usr 247M 18.0G 247M /usr sys/ROOT/RELENG_9_2/usr/obj 31K 18.0G 31K /usr/obj sys/ROOT/RELENG_9_2/usr/ports 31K 18.0G 31K /usr/ports sys/ROOT/RELENG_9_2/usr/src 31K 18.0G 31K /usr/src sys/ROOT/RELENG_9_2/var 35.8M 18.0G 35.8M /var sys/swap 1.03G 19.0G 16K - root@BETEST:~ # beadm list BE Active Mountpoint Space Created RELENG_9_2 NR / 533.9M 2014-01-13 12:38 root@BETEST:~ # beadm create test Created successfully root@BETEST:~ # zfs list -t all NAME USED AVAIL REFER MOUNTPOINT sys 1.55G 18.0G 31K none sys/ROOT 535M 18.0G 31K none sys/ROOT/RELENG_9_2 535M 18.0G 251M / sys/ROOT/RELENG_9_2@2014-02-19-17:03:49 0 - 251M - sys/ROOT/RELENG_9_2/tmp 36K 18.0G 36K /tmp sys/ROOT/RELENG_9_2/tmp@2014-02-19-17:03:49 0 - 36K - sys/ROOT/RELENG_9_2/usr 247M 18.0G 247M /usr sys/ROOT/RELENG_9_2/usr@2014-02-19-17:03:49 0 - 247M - sys/ROOT/RELENG_9_2/usr/obj 31K 18.0G 31K /usr/obj sys/ROOT/RELENG_9_2/usr/obj@2014-02-19-17:03:49 0 - 31K - sys/ROOT/RELENG_9_2/usr/ports 31K 18.0G 31K /usr/ports sys/ROOT/RELENG_9_2/usr/ports@2014-02-19-17:03:49 0 - 31K - sys/ROOT/RELENG_9_2/usr/src 31K 18.0G 31K /usr/src sys/ROOT/RELENG_9_2/usr/src@2014-02-19-17:03:49 0 - 31K - sys/ROOT/RELENG_9_2/var 35.8M 18.0G 35.8M /var sys/ROOT/RELENG_9_2/var@2014-02-19-17:03:49 0 - 35.8M - sys/ROOT/test 7K 18.0G 251M / sys/ROOT/test/tmp 1K 18.0G 36K /tmp sys/ROOT/test/usr 4K 18.0G 247M /usr sys/ROOT/test/usr/obj 1K 18.0G 31K /usr/obj sys/ROOT/test/usr/ports 1K 18.0G 31K /usr/ports sys/ROOT/test/usr/src 1K 18.0G 31K /usr/src sys/ROOT/test/var 1K 18.0G 35.8M /var sys/swap 1.03G 19.0G 16K - root@BETEST:~ # beadm mount test Mounted successfully on '/tmp/BE-test.PSDl70lT' root@BETEST:~ # mount sys/ROOT/RELENG_9_2 on / (zfs, local, noatime, nfsv4acls) devfs on /dev (devfs, local, multilabel) sys/ROOT/RELENG_9_2/tmp on /tmp (zfs, local, noatime, nfsv4acls) sys/ROOT/RELENG_9_2/usr on /usr (zfs, local, noatime, nfsv4acls) sys/ROOT/RELENG_9_2/usr/obj on /usr/obj (zfs, local, noatime, nfsv4acls) sys/ROOT/RELENG_9_2/usr/ports on /usr/ports (zfs, local, noatime, nfsv4acls) sys/ROOT/RELENG_9_2/usr/src on /usr/src (zfs, local, noatime, nfsv4acls) sys/ROOT/RELENG_9_2/var on /var (zfs, local, noatime, nfsv4acls) sys/ROOT/test on /tmp/BE-test.PSDl70lT (zfs, local, noatime, nfsv4acls) sys/ROOT/test/tmp on /tmp/BE-test.PSDl70lT/tmp (zfs, local, noatime, nfsv4acls) sys/ROOT/test/usr on /tmp/BE-test.PSDl70lT/usr (zfs, local, noatime, nfsv4acls) sys/ROOT/test/usr/obj on /tmp/BE-test.PSDl70lT/usr/obj (zfs, local, noatime, nfsv4acls) sys/ROOT/test/usr/ports on /tmp/BE-test.PSDl70lT/usr/ports (zfs, local, noatime, nfsv4acls) sys/ROOT/test/usr/src on /tmp/BE-test.PSDl70lT/usr/src (zfs, local, noatime, nfsv4acls) sys/ROOT/test/var on /tmp/BE-test.PSDl70lT/var (zfs, local, noatime, nfsv4acls) root@BETEST:~ # beadm umount test Unmounted successfully root@BETEST:~ # beadm activate test Activated successfully root@BETEST:~ # beadm list BE Active Mountpoint Space Created RELENG_9_2 N / 104.5K 2014-01-13 12:38 test R - 534.0M 2014-02-19 17:03 root@BETEST:~ # zfs list -o name,used,avail,mountpoint,canmount NAME USED AVAIL MOUNTPOINT CANMOUNT sys 1.55G 18.0G none on sys/ROOT 535M 18.0G none on sys/ROOT/RELENG_9_2 136K 18.0G / noauto sys/ROOT/RELENG_9_2/tmp 23K 18.0G /tmp noauto sys/ROOT/RELENG_9_2/usr 1K 18.0G /usr noauto sys/ROOT/RELENG_9_2/usr/obj 0 18.0G /usr/obj noauto sys/ROOT/RELENG_9_2/usr/ports 0 18.0G /usr/ports noauto sys/ROOT/RELENG_9_2/usr/src 0 18.0G /usr/src noauto sys/ROOT/RELENG_9_2/var 73.5K 18.0G /var noauto sys/ROOT/test 535M 18.0G / on sys/ROOT/test/tmp 60K 18.0G /tmp on sys/ROOT/test/usr 247M 18.0G /usr on sys/ROOT/test/usr/obj 32K 18.0G /usr/obj on sys/ROOT/test/usr/ports 32K 18.0G /usr/ports on sys/ROOT/test/usr/src 32K 18.0G /usr/src on sys/ROOT/test/var 35.9M 18.0G /var on sys/swap 1.03G 19.0G - - root@BETEST:~ #
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