Date: Fri, 15 Nov 2013 22:59:13 +0400 From: Oleg Ginzburg <olevole@olevole.ru> To: freebsd-fs@freebsd.org Subject: What is the way to determine owner of zfs jailed filesystem Message-ID: <CAMsb%2BmakNq=-WzW4F=t=Qvodxh2HaFaVN1EeV8294aJGTW212Q@mail.gmail.com>
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Hi maillist, I've playing with zfs jail and could not find out what kind of jail have this or that FS For example: % jls -h jid name path jid name path 1 jail1 /usr/jails/jails/jail1 2 jail2 /usr/jails/jails/jail2 3 testempjail /usr/jails/jails/testempjail % zfs create zroot/j1fs % zfs set jailed=on zroot/j1fs % zfs jail jail2 zroot/j1fs % jexec 2 login -f root root@jail2:~ # zfs list NAME USED AVAIL REFER MOUNTPOINT zroot 39.5G 2.62T 31K none zroot/j1fs 31K 2.62T 31K none root@jail2:~ # zfs set mountpoint=/tmp/zfs zroot/j1fs root@jail2:~ # zfs mount -a root@jail2:~ # logout % zfs list NAME USED AVAIL REFER MOUNTPOINT zroot 39.5G 2.62T 31K none zroot/j1fs 51K 2.62T 51K /tmp/zfs zroot/root 37.4G 2.62T 36.2G / % zfs mount zroot/j1fs cannot mount 'zroot/j1fs': dataset is exported to a local zone On the master system i see that zroot/j1fs has a mount point /tmp/zfs (actually <jail2 root path>/tmp/zfs) However, documentation and zfs get does not answer how to find out that the owner of zroot/j1fs is jail2 (or jid 2) % zfs get all zroot/j1fs NAME PROPERTY VALUE SOURCE zroot/j1fs type filesystem - zroot/j1fs creation Fri Nov 15 22:41 2013 - zroot/j1fs used 51K - zroot/j1fs available 2.62T - zroot/j1fs referenced 51K - zroot/j1fs compressratio 1.00x - zroot/j1fs mounted yes - zroot/j1fs quota none default zroot/j1fs reservation none default zroot/j1fs recordsize 128K default zroot/j1fs mountpoint /tmp/zfs local zroot/j1fs sharenfs off default zroot/j1fs checksum on default zroot/j1fs compression off default zroot/j1fs atime on default zroot/j1fs devices on default zroot/j1fs exec on default zroot/j1fs setuid on default zroot/j1fs readonly off default zroot/j1fs jailed on local zroot/j1fs snapdir hidden default zroot/j1fs aclmode discard default zroot/j1fs aclinherit restricted default zroot/j1fs canmount on default zroot/j1fs xattr off temporary zroot/j1fs copies 1 default zroot/j1fs version 5 - zroot/j1fs utf8only off - zroot/j1fs normalization none - zroot/j1fs casesensitivity sensitive - zroot/j1fs vscan off default zroot/j1fs nbmand off default zroot/j1fs sharesmb off default zroot/j1fs refquota none default zroot/j1fs refreservation none default zroot/j1fs primarycache all default zroot/j1fs secondarycache all default zroot/j1fs usedbysnapshots 0 - zroot/j1fs usedbydataset 51K - zroot/j1fs usedbychildren 0 - zroot/j1fs usedbyrefreservation 0 - zroot/j1fs logbias latency default zroot/j1fs dedup off default zroot/j1fs mlslabel - zroot/j1fs sync standard default zroot/j1fs refcompressratio 1.00x - zroot/j1fs written 51K - zroot/j1fs logicalused 35.5K - zroot/j1fs logicalreferenced 35.5K -
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