Date: Thu, 23 Apr 2015 13:39:02 -0400 From: Kurt Lidl <lidl@pix.net> To: freebsd-fs@freebsd.org Subject: creating new zpool under jail? Message-ID: <55392E36.6070209@pix.net>
next in thread | raw e-mail | index | archive | help
Greetings - I've run into a problem that I haven't been able to figure out how to work around, and after looking through some of the kernel code, I'm not sure it is currently possible to do what I want. I have a script that creates a 2GB file, and then creates a fresh zpool using that file as the backing store. That works perfectly on a regular machine. I can create the zpool and some filesystems, and when I'm done, use 'zfs send' to serialize the contents of the filesystems into a static set of files. Here's the commands from that script: mkdir zfs truncate -s +2g zfs.file zpool create -o cachefile=none -m `pwd`/zfs system `pwd`/zfs.file When run on a jailed instance, the 'zpool create' fails like this: zpool create -o cachefile=none -m `pwd`/zfs system `pwd`/zfs.file cannot create 'system': 'mountpoint' cannot be set while dataset 'zoned' property is set So, changing it slightly to work around the "zoned" issue: zpool create -o cachefile=none -O jailed=on \ -m `pwd`/zfs system `pwd`/zfs.file cannot create 'system': permission denied Using ktrace/kdump on the command under the jail, it fails with: 4832 zpool SCTL "sysctl.name2oid" 4832 zpool RET __sysctl 0 4832 zpool CALL __sysctl(0x7fffffffb700,0x3,0x7fffffffb7a4,0x7fffffffb7a8,0,0) 4832 zpool SCTL "security.jail.jailed" 4832 zpool RET __sysctl 0 4832 zpool CALL __sysctl(0x7fffffffb8e0,0x2,0x7fffffffb920,0x7fffffffb918,0x801473dfd,0x15) 4832 zpool SCTL "sysctl.name2oid" 4832 zpool RET __sysctl 0 4832 zpool CALL __sysctl(0x7fffffffb920,0x4,0x7fffffffb9cc,0x7fffffffb9d0,0,0) 4832 zpool SCTL "vfs.zfs.version.ioctl" 4832 zpool RET __sysctl 0 4832 zpool CALL ioctl(0x3,0xc0185a00,0x7fffffffb950) 4832 zpool RET ioctl -1 errno 1 Operation not permitted I would think that creating a file-backed zpool under a jail ought to be allowed. Any suggestions/solutions welcomed! Thanks for reading. -Kurt
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?55392E36.6070209>