The assignemnt to `err = nil` is not used in the rest of the code,
however, this was a protective err = nil assignment.
Change-Id: Id70fb2a2e68b91e2481952d865334e603ca41188
We were reading in a segment's stream ID and position, and assuming that
was enough for the downloader. But of course, the downloader needs
AliasPieces filled in. So now we request each segment record from the
metabase and fill in the VerifySegment records entirely.
Change-Id: If85236388eb99a65e2cb739aa976bd49ee2b2c89
We have to wait until the slowest node is done being tested before we
can move on to the next of segments. Since the slowest node can be
arbitrarily slow, we'll set a timeout and treat too-slow nodes as
temporarily offline.
Change-Id: I80fe865dd4e8f826700430fb0140c2d3aefca381
When we are verifying pieces by downloading the first byte, if we
encounter a timeout, treat the node as if we failed to connect to it,
and log the error once instead of twice.
Change-Id: I70602d554183c98f1213f3ffb1bfec41100ea0e7
This csv file was being closed as soon as the service was created.
All subsequent writes to the closed file handle produced errors,
which were logged but otherwise ignored.
Instead, we would like the file to remain open and writable, until
the service is destroyed.
Change-Id: Ib29944d25b2f5b2d0f90fdbdcde44fea8d769321
Previously, if any pieces are still on disqualified nodes, this tool
would treat those pieces as fine (if the disqualified node is still
online) or temporarily unavailable (if the disqualified node is
offline). Instead, we should treat such pieces as lost.
This also fixes a slight problem with the code that handles a broken
alias. This is not likely to happen, but if we do see an alias that is
not in the alias map, we return an error instead of nil.
Change-Id: Ib4e2e729ef0535dd7bd9ce2f621680d9f959891c
The WithExists methods previously were not writing problematic pieces to
problem-pieces.csv. With this change, they will.
Change-Id: I51eadd3d8f4299e1efa787c9266a7aacfa525eb3
When this branch is followed, `audit.OutcomeFailure` is returned, and
`MarkNotFound()` is immediately called again (in
`(*NodeVerifier).Verify()`). Calling `MarkNotFound()` twice for the same
piece is not correct.
Change-Id: I1a2764bc32ed015628fcd9353ac3307f269b4bbd
It may help to know how much faster these methods are than the
alternative (asking nodes for each piece in turn).
Change-Id: Ieb7c963f62b662f72c84a49de8a09c065c14f782
* better error handling when Exists method is not avaialble on SN
* more optimal processing of response from Exists method
Change-Id: I6d61c09473e9f5ab76a4601720e8bd520767f4c2
This adds the capability to the segment-verify tool of checking all
pieces of every indicated segment.
Pieces which could not be accessed (i.e. we couldn't get a single
byte from them) are recorded in a csv file.
I haven't been able to test this in any very meaningful way, yet, but I
am comforted by the fact that the worst things it could possibly do are
(a) download pieces too many times, and (b) miss downloading some
pieces.
Change-Id: I3aba30921572c974993363eb36d0fd5b3ae97907
It's quite likely to hit some timelimit, rather than giving up
immediately, let's retry after the throttle amount.
Change-Id: I20944b058d771f5d4bfa0eea7a2c26cefcd74739
* Disallow too large listing limit, which would cause a lot of memory to
be consumed.
* Fix throttling logic and add a test.
* Fix read error handling; depending on the concurrency it can return
the NotFound status either in the Read or Close.
Change-Id: I778f04a5961988b2480df5c7faaa22393fc5d760
