Darren J Moffat wrote: > On 11/06/2010 11:42, Arne Jansen wrote: >> Darren J Moffat wrote: >>>> But the following document says "Recursive ZFS snapshots are created >>>> quickly as one atomic operation. The snapshots are created together >>>> (all >>>> at once) or not created at all." >>>> http://docs.sun.com/app/docs/doc/819-5461/gdfdt?a=view >>> >>> I've looked at the code again - I miss read part of it - it does appear >>> to be an "all or nothing" both for the create and destroy. >>> >> >> I read the code differently, zfs destroy does the iteration in the >> zfs utility, not even in libzfs. The ioctl doesn't even have a recurse >> flag. > > In zfs_do_destroy() if recurse is set we call zfs_destroy_snaps() > > http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/lib/libzfs/common/libzfs_dataset.c#zfs_destroy_snaps > > > Which makes a single ioctl call ZFS_IOC_DESTROY_SNAPS >
Ah! There's an extra ioctl for a recursive snapshot delete, I missed that part. Many thanks! This will also help me with my multi-snapshot- destroy-module. I should at least have checked with a simple truss... You made my day :) --Arne _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
