It was possible to get into a situation where successfulPieces =
es.RequiredCount(), errorCount < minFailures, and inProgress == 0 (when
the succeeding gets all completed before the failures), whereupon the
last goroutine in the limiter would sit and wait forever for another
goroutine to finish.
This change corrects the handling of that situation.
As an aside, this is really pretty confusing code and we should think
about redoing the whole function.
Change-Id: Ifa3d3ad92bc755e563fd06b2aa01ef6147075a69
Several tests using `(*ECRepairer).Get()` have begun to exhibit flaky
results. The tests are expecting to see failures in certain cases, but
the failures are not present. It appears that the cause of this is that,
sometimes, the fastest good nodes are able to satisfy the repairer
(providing RequiredCount pieces) before the repairer is able to identify
the problem scenario we have laid out.
In this commit, we add an argument to `(*ECRepairer).Get()` which
specifies how many failure results are expected. In normal/production
conditions, this parameter will be 0, meaning Get need not wait for
any errors and should only report those that arrived while waiting for
RequiredCount pieces (the existing behavior). But in these tests, we can
request that Get() wait for enough results to see the errors we are
expecting.
Refs: https://github.com/storj/storj/issues/5593
Change-Id: I2920edb6b5a344491786aab794d1be6372c07cf8
We have an alert on `repair_too_many_nodes_failed` which fires too
frequently. Every time so far, it has been because of a network blip of
some nature on the satellite side.
Satellite operators are expected to have other means in place for
alerting on network problems and fixing them, so it's not necessary for
the repair framework to act in that way.
Instead, in this change, we change the way that
`repair_too_many_nodes_failed` works. When a repair fails, we collect
piece fetch errors by type and determine from them whether it looks like
we are having network problems (most errors are connection failures,
possibly also some successful connections which subsequently time out)
or whether something else has happened.
We will now only emit `repair_too_many_nodes_failed` when the outcome
does not look like a network failure. In the network failure case, we
will instead emit `repair_suspected_network_problem`.
Refs: https://github.com/storj/storj/issues/4669
Change-Id: I49df98da5df9c606b95ad08a2bdfec8092fba926
This structure is entirely unused within the audit module, and is only
used by repair code. Accordingly, this change moves the structure from
audit code to repair code.
Also, we take the opportunity here to rename the structure to something
less generic.
Refs: https://github.com/storj/storj/issues/4669
Change-Id: If85b37e08620cda1fde2afe98206293e02b5c36e
We retry a GET_REPAIR operation in one case, and one case only (as far
as I can determine): when we are trying to connect to a node using its
last known working IP and port combination rather than its supplied
hostname, and we think the operation failed the first time because of a
Dial failure.
However, logs collected from storage node operators along with logs
collected from satellites are strongly indicating that we are retrying
GET_REPAIR operations in some cases even when we succeeded in connecting
to the node the first time. This results in the node complaining loudly
about being given a duplicate order limit (as it should), whereupon the
satellite counts that as an unknown error and potentially penalizes the
node.
See discussion at
https://forum.storj.io/t/get-repair-error-used-serial-already-exists-in-store/17922/36
.
Investigation into this problem has revealed that
`!piecestore.CloseError.Has(err)` may not be the best way of determining
whether a problem occurred during Dial. In fact, it is probably
downright Wrong. Handling of errors on a stream is somewhat complicated,
but it would appear that there are several paths by which an RPC error
originating on the remote side might show up during the Close() call,
and would thus be labeled as a "CloseError".
This change creates a new error class, repairer.ErrDialFailed, with
which we will now wrap errors that _really definitely_ occurred during
a Dial call. We will use this class to determine whether or not to retry
a GET_REPAIR operation. The error will still also be wrapped with
whatever wrapper classes it used to be wrapped with, so the potential
for breakage here should be minimal.
Refs: https://github.com/storj/storj/issues/4687
Change-Id: Ifdd3deadc8258f34cf3fbc42aff393fa545794eb
To save load on DNS servers, the repair code first tries to dial the
last known good ip and port for a node, and then falls back to a DNS
lookup only if we fail to connect to the last known good ip and port.
However, it looks like we are seeing errors during the client stream
Close() call (probably due to quic-go code), and those are classified
the same as errors encountered during Dial. The repairer code sees this
error, assumes that we failed to contact the node, and retries- but
since we did actually succeed in connecting the first time around, this
results in submitting the same order limit (with the same serial number)
to the storage node, which (rightfully) rejects it.
So together with change I055c186d5fd4e79560f67763175bc3130b9bc7d2 in
storj/uplink, this should avoid the double submission and avoid dinging
nodes' suspension scores unfairly.
See https://github.com/storj/storj/issues/4687.
Also, moving the testsuite directory check up above check-monkit in the
Jenkins Lint task, so that a non-tidy testsuite/go.mod can be recognized
and handled before everything breaks weirdly and seemingly randomly
later on.
Change-Id: Icb2b05aaff921d0af6aba10e450ac7e0a7bb2655
The "satellite fetch-pieces" command allows a satellite operator to
fetch as many pieces of a segment as possible, along with their
original order limits and hashes as provided by the storage nodes. The
fetched pieces and associated info will be stored on in a specified
folder as they are, rather than being RS-decoded or decrypted.
It is hoped that this will allow easier debugging of certain one-off
problems we've observed in the wild.
Change-Id: I42ae0e9ef0023538e42473a9be5a2460a3ac0f3a
inconsistency
The original design had a flaw which can potentially cause discrepancy
for nodes reputation status between reputations table and nodes table.
In the event of a failure(network issue, db failure, satellite failure, etc.)
happens between update to reputations table and update to nodes table, data
can be out of sync.
This PR tries to fix above issue by passing through node's reputation from
the beginning of an audit/repair(this data is from nodes table) to the next
update in reputation service. If the updated reputation status from the service
is different from the existing node status, the service will try to update nodes
table. In the case of a failure, the service will be able to try update nodes
table again since it can see the discrepancy of the data. This will allow
both tables to be in-sync eventually.
Change-Id: Ic22130b4503a594b7177237b18f7e68305c2f122
When we can't complete an audit or repair, we need more information about
what happened during each individual share/piece download.
In audit, add the number of offline, unknown, contained, failed nodes to
the error log. In repair, combine the errors from each download and add
them to the error log.
Change-Id: Ic5d2a0f3f291f26cb82662bfb37355dd2b5c89ba
Sometimes we see timeouts from DNS lookups when trying to do
repair GETs. Solution: try using node's last IP and port first.
If we can't connect, retry with DNS lookup.
Change-Id: I59e223aebb436118779fb18378f6e09d072f12be
We want to use StreamID/Position to identify injured
segment. As it is hard to alter existing injuredsegments
table we are adding a new table that will replace existing
one. Old table will be dropped later.
Change-Id: I0d3b06522645013178b6678c19378ebafe485c49
Piece hash verification failures during repair download are considered
audit failures, but we are not logging these occurrences. Now we log
them.
Change-Id: If456cebcfda6af7a659be3d1fc74448e681fb653
Adds monkit tracing for ecrepairer.downloadAndVerifyPiece and
ecrepairer.putPiece so we can get more accurate estimates of node
performance during repair.
Change-Id: Ic05025bf3c493bb3d6f5d325d090c5b7c9e5465d
This will speed up the Put step of repair by not waiting to time out for
a handful of slow nodes, at the expense of a slightly less durable
pointer. It will still repair to the optimal threshold, but not every
node that is selected will end up in the pointer.
Change-Id: I02a0658e3fe6fc0383f26af0f50a065b8b11a651
* satellite: update log levels
Change-Id: I86bc32e042d742af6dbc469a294291a2e667e81f
* log version on start up for every service
Change-Id: Ic128bb9c5ac52d4dc6d6c4cb3059fbad73f5d3de
* Use monkit for tracking failed ip resolutions
Change-Id: Ia5aa71d315515e0c5f62c98d9d115ef984cd50c2
* fix compile errors
Change-Id: Ia33c8b6e34e780bd1115120dc347a439d99e83bf
* add request limit value to storage node rpc err
Change-Id: I1ad6706a60237928e29da300d96a1bafa94156e5
* we cant track storage node ids in monkit metrics so lets use logging to track that for expired orders
Change-Id: I1cc1d240b29019ae2f8c774792765df3cbeac887
* fix build errs
Change-Id: I6d0ffe058e9a38b7ed031c85a29440f3d68e8d47
Add flag to satellite repairer, "InMemoryRepair" that allows the
satellite to decide whether to download the entire segment being
repaired into memory (this is what the satellite already does), or to
download it into temporary files on disk that will be read from in the
upload phase of repair.
This should help with handling high repair traffic on satellites that
cannot afford to spend 64mb of memory per repair worker.
Updates tests to test repair for both in memory and to disk.
Change-Id: Iddf591e165621497c98533d45bfea3c28b08a194
Previously, we were simply discarding rows from the repair queue when
they couldn't be repaired (either because the overlay said too many
nodes were down, or because we failed to download enough pieces).
Now, such segments will be put into the irreparableDB for further
and (hopefully) more focused attention.
This change also better differentiates some error cases from Repair()
for monitoring purposes.
Change-Id: I82a52a6da50c948ddd651048e2a39cb4b1e6df5c
all of the packages and tests work with both grpc and
drpc. we'll probably need to do some jenkins pipelines
to run the tests with drpc as well.
most of the changes are really due to a bit of cleanup
of the pkg/transport.Client api into an rpc.Dialer in
the spirit of a net.Dialer. now that we don't need
observers, we can pass around stateless configuration
to everything rather than stateful things that issue
observations. it also adds a DialAddressID for the
case where we don't have a pb.Node, but we do have an
address and want to assert some ID. this happened
pretty frequently, and now there's no more weird
contortions creating custom tls options, etc.
a lot of the other changes are being consistent/using
the abstractions in the rpc package to do rpc style
things like finding peer information, or checking
status codes.
Change-Id: Ief62875e21d80a21b3c56a5a37f45887679f9412
* update audit status as failed for nodes that failed piece hash verification
* remove comment
* fix lint error
* add test
* fix format
* use named return value for Get
* add comments
* add more better comment
* format
* add outline for ECRepairer
* add description of process in TODO comments
* begin download/getting hash for a single piece
* verify piece hash and order limit during download
* fix download piece
* begin filling out ESREpair. Get
* wip move ecclient.Repair to ecrepairer.Repair
* pass satellite signee into repairer
* reconstruct original stripe from pieces
* move rebuildStripe()
* calculate piece size differently, increment successful count
* fix shares slices initialization
* rename stripeData to segment
* do not pad reader in Repair()
* temp debug
* create unsafeRSScheme
* use decode reader
* rename file name to be all lowercase
* make repair downloader async
* declare condition variable inside Get method
* set downloadAndVerifyPiece's in-memory buffer to be share size
* update unusedLimits var
* address comments
* remove unnecessary comments
* move initialization of segmentRepaire to be outside of repairer service
* use ReadAll during download
* remove dots and move hashing to after validating for order limit signature
* wip test
* make sure files exactly at min threshold are repaired
* remove unused code
* use corrput data and write back to storagenode
* only create corrupted node and piece ids once
* add comment
* address nat's comment
* fix linting and checker_test
* update comment
* add comments
* remove "copied from ecclient" comments
* add clarification comments in ec.Repair
