Re: amcheck (B-Tree integrity checking tool)

On Mon, Mar 14, 2016 at 11:48 PM, Amit Langote
<Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp> wrote:
>> Dunno about that. It's defining characteristic is that it checks child
>> pages against their parent IMV. Things are not often defined in terms
>> of their locking requirements.
>
> At the risk of sounding a bit verbose, do bt_check_level() for a check
> that inspects a level at a time and bt_check_multi_level() for a check
> that spans levels sound descriptive?

Hmm. But all functions verify multiple levels. What distinguishes
bt_index_parent_check()'s verification is that the downlinks in
internal pages are checked against actual child pages (every item in
the child page, in fact). It's the parent/child relationship that is
verified in addition to the standard checks of every page on and
across (not between) every level.

--
Peter Geoghegan