On Mar 16, 2012, at 3:06 PM, Brandon High wrote: > On Fri, Mar 16, 2012 at 2:35 PM, Philip Brown <p...@bolthole.com> wrote: >> if there isnt a process visible doing this via ps, I'm wondering how >> one might check if a zfs filesystem or snapshot is rendered "busy" in >> this way, interfering with an unmount or destroy? >> >> I'm also wondering if this sort of thing can mean interference between >> some combination of multiple send/receives at the same time, on the >> same filesystem? > > Look at 'zfs hold', 'zfs holds', and 'zfs release'. Sends and receives > will place holds on snapshots to prevent them from being changed.
For most cases, without other breakage, there is a process on each end: one running zfs send, the other running zfs receive. -- richard -- DTrace Conference, April 3, 2012, http://wiki.smartos.org/display/DOC/dtrace.conf ZFS Performance and Training richard.ell...@richardelling.com +1-760-896-4422
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