On Thu, Feb 02, 2017 at 09:31:58PM -0500, Ultima wrote: > I recently moved some data on a box with limited space. I decided I should > limit the snapshots so that space would not become an issue. I just check > back a week later to find out the box is hitting the borderline. Doing I > quick check I realized that the snapshot_limit is not being respected. > > # uname -a > FreeBSD R1 11.0-STABLE FreeBSD 11.0-STABLE #17 r312232: Sun Jan 15 10:59:10 > EST 2017 root@S1:/usr/src/11-STABLE/obj/usr/src/11-STABLE/src/sys/MYKERNEL > amd64 > > # zfs create zroot/bhyve/test > # zfs set snapshot_limit=0 zroot/bhyve/test > # zfs snapshot zroot/bhyve/test@1 > > > # zfs snapshot zroot/bhyve/test@2 > # zfs snapshot zroot/bhyve/test@3 > # zfs list -t snapshot | grep zroot/bhyve/test > zroot/bhyve/test@1 0 - > 88K - > zroot/bhyve/test@2 0 - > 88K - > zroot/bhyve/test@3 0 - > 88K - > # zfs get all zroot/bhyve/test | grep snapshot > zroot/bhyve/test usedbysnapshots 0 - > zroot/bhyve/test snapshot_limit 0 local > zroot/bhyve/test snapshot_count 3 local > > Also wanted to verify 0 was not being mistaken for none. > > # for snapshot in `zfs list -t snapshot | grep zroot/bhyve/test | awk > '{print $1}'`; do zfs destroy $snapshot ; done > > # zfs get all zroot/bhyve/test | grep snapshot > zroot/bhyve/test usedbysnapshots 0 - > zroot/bhyve/test snapshot_limit 0 local > zroot/bhyve/test snapshot_count 0 local > > # zfs set snapshot_limit=1 zroot/bhyve/test > # zfs snapshot zroot/bhyve/test@1 > # zfs snapshot zroot/bhyve/test@2 > # zfs snapshot zroot/bhyve/test@3 > # zfs get all zroot/bhyve/test | grep snapshot > zroot/bhyve/test usedbysnapshots 0 - > zroot/bhyve/test snapshot_limit 1 local > zroot/bhyve/test snapshot_count 3 local > > > Also tested on head > FreeBSD S1 12.0-CURRENT FreeBSD 12.0-CURRENT #26 r312388: Wed Jan 18 > 12:38:52 EST 2017 > root@S1:/usr/src/head/obj/usr/src/head/src/sys/MYKERNEL-NODEBUG > amd64
Hi, I suspect this line from the manpage is key: The limit is not enforced if the user is allowed to change the limit Regards, Gary _______________________________________________ freebsd-current@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"