Date: Sat, 1 Nov 2014 16:26 EDT From: Winston <wbe@psr.com> To: freebsd-doc@FreeBSD.org Subject: FreeBSD Handbook section 20.4.5.3 edits/issues Message-ID: <201411012026.sA1KQjXW070137@psr.com>
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In the FreeBSD Handbook page at http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/zfs-zfs.html as of 2014/11/01 17:20:42 GMT in Section 20.4.5.3, Snapshot Rollback, please consider the following changes: 1) Typo in paragraph 2 ("the first example"): The "ls /var/tmp" result of passwd passwd.copy should be: passwd passwd.copy vi.recover Otherwise the "ls /var/tmp" after the rm makes no sense. 2) Recommendation at the end of the first paragraph seems wrong: The last two sentences of the first paragraph say: "Taking a snapshot of the current state of the dataset before rolling back to a previous one is a good idea when some data is required later. This way, the user can roll back and forth between snapshots without losing data that is still valuable." However, that appears to me to conflict with this: "This warning means that snapshots exist between the current state of the dataset and the snapshot to which the user wants to roll back. To complete the rollback, these snapshots must be deleted." Doing "zfs snapshot mypool/var/tmp@oops" would make the @diff_snapshot no longer the most recent. If zfs rollback mypool/var/tmp/@diff_snapshot does indeed require deleting the more recent @oops snapshot, then making that snapshot was a waste of time. In particular, the earlier claim that "the user can roll back and forth between snapshots" seems untrue. Please clarify the document or fix. HTH, -WBE
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