Solaris 10 5/09 Release Notes

zfs snapshot -r Fails When File System Is Busy (6462803)

This issue is caused because of a problem with the way synchronous I/O is handled when a file system is unmounted. When more than one ZFS BE exists in a ZFS root pool, a recursive snapshot might fail.

cannot create snapshot 'rpool@today': dataset is busy

Workaround: Choose one of the following workarounds: