* creating a byte buffer for SFTP file segments
* Adding an error condition for when there are
remaining segments in the queue
* Simplification of the queue using a map
it is possible that ILM or Deletes got triggered on batch
of objects that we are attempting to batch replicate, ignore
this scenario as valid behavior.
sendfile implementation to perform DMA on all platforms
Go stdlib already supports sendfile/splice implementations
for
- Linux
- Windows
- *BSD
- Solaris
Along with this change however O_DIRECT for reads() must be
removed as well since we need to use sendfile() implementation
The main reason to add O_DIRECT for reads was to reduce the
chances of page-cache causing OOMs for MinIO, however it would
seem that avoiding buffer copies from user-space to kernel space
this issue is not a problem anymore.
There is no Go based memory allocation required, and neither
the page-cache is referenced back to MinIO. This page-
cache reference is fully owned by kernel at this point, this
essentially should solve the problem of page-cache build up.
With this now we also support SG - when NIC supports Scatter/Gather
https://en.wikipedia.org/wiki/Gather/scatter_(vector_addressing)
`monitorAndConnectEndpoints` will continue to attempt to reconnect offline disks.
Since disks were never closed, a `MarkOffline` would continue to try to check these disks forever.
Close previous disks.
replace io.Discard usage to fix NUMA copy() latencies
On NUMA systems copying from 8K buffer allocated via
io.Discard leads to large latency build-up for every
```
copy(new8kbuf, largebuf)
```
can in-cur upto 1ms worth of latencies on NUMA systems
due to memory sharding across NUMA nodes.
Fix various regressions from #18029
* If context is canceled the token is never returned. This will lead to scanner being unable to save and deadlocking.
* Fix backup not being able to get any data (hr empty)
* Reduce backup timeout.
Tiering statistics have been broken for some time now, a regression
was introduced in 6f2406b0b6
Bonus fixes an issue where the objects are not assumed to be
of the 'STANDARD' storage-class for the objects that have
not yet tiered, this should be conditional based on the object's
metadata not a default assumption.
This PR also does some cleanup in terms of implementation,
fixes#18070
https://github.com/minio/minio/pull/18307 partially removed the duplicate upload id check.
While I can't really see how ListDir can return duplicate entries, let's re-add it, since it is a cheap sanity check.
There can be rare situations where errors seen in bucket metadata
load on startup or subsequent metadata updates can result in missing
replication remotes.
Attempt a refresh of remote targets backed by a good replication config
lazily in 5 minute intervals if there ever occurs a situation where
remote targets go AWOL.
Since relaxing quorum the error across pools
for ListBuckets(), GetBucketInfo() we hit a
situation where loading IAM could potentially
return an error for second pool that server
is not initialized.
We need to handle this, let the pool come online
and retry transparently - this PR fixes that.
x-amz-signed-headers is meant for HTTP headers only
not for query params, using that to verify things
further can lead to failure.
The generated presigned URL with custom metadata
is already kosher (tamper proof).
fixes#18281
`resourceMetricsMap` has no protection against concurrent reads and writes.
Add a mutex and don't use maps from the last iteration.
Bug introduced in #18057Fixes#18271
globalDeploymentID was being read while it was being set.
Fixes race:
```
WARNING: DATA RACE
Write at 0x0000079605a0 by main goroutine:
github.com/minio/minio/cmd.connectLoadInitFormats()
github.com/minio/minio/cmd/prepare-storage.go:269 +0x14f0
github.com/minio/minio/cmd.waitForFormatErasure()
github.com/minio/minio/cmd/prepare-storage.go:294 +0x21d
...
Previous read at 0x0000079605a0 by goroutine 105:
github.com/minio/minio/cmd.newContext()
github.com/minio/minio/cmd/utils.go:817 +0x31e
github.com/minio/minio/cmd.adminMiddleware.func1()
github.com/minio/minio/cmd/admin-router.go:110 +0x96
net/http.HandlerFunc.ServeHTTP()
net/http/server.go:2136 +0x47
github.com/minio/minio/cmd.setBucketForwardingMiddleware.func1()
github.com/minio/minio/cmd/generic-handlers.go:460 +0xb1a
net/http.HandlerFunc.ServeHTTP()
net/http/server.go:2136 +0x47
...
```
currently the default for all drives is 512, which is a lot
for HDDs the recent testing has revealed moving this to 32
for HDDs seems like a fair value.
Introducing a new version of healthinfo struct for adding this info is
not correct. It needs to be implemented differently without adding a new
version.
This reverts commit 8737025d940f80360ed4b3686b332db5156f6659.
There is a fundamental race condition in `newErasureServerPools`, where setObjectLayer is
called before the poolMeta has been loaded/populated.
We add a placeholder value to this field but disable all saving of the value, so we don't risk
overwriting the value on disk. Once the value has been loaded or created, it is replaced with
the proper value, which will also be saved.
Also fixes various accesses of `poolMeta` that were done without locks.
We make the `poolMeta.IsSuspended` return false, even if we shouldn't risk out-of-bounds
reads anymore.
if erasure upgrade is needed rely on the in-memory
values, instead of performing a "DiskInfo()" call.
https://brendangregg.com/blog/2016-09-03/sudden-disk-busy.html
for HDDs these are problematic, lets avoid this because
there is no value in "being" absolutely strict here
in terms of parity. We are okay to increase parity
as we see based on the in-memory online/offline ratio.
Several callers to putObjectTar may be fighting to set sc. Move the write out of the loop.
Use static resp, and request elements.
Fixes tests with -race:
```
WARNING: DATA RACE
Read at 0x00c01cd680e0 by goroutine 691354:
github.com/minio/minio/cmd.objectAPIHandlers.PutObjectExtractHandler.func1()
e:/gopath/src/github.com/minio/minio/cmd/object-handlers.go:2130 +0x149
github.com/minio/minio/cmd.untar.func1()
e:/gopath/src/github.com/minio/minio/cmd/untar.go:250 +0x2b6
github.com/minio/minio/cmd.untar.func8()
e:/gopath/src/github.com/minio/minio/cmd/untar.go:261 +0xa4
Previous write at 0x00c01cd680e0 by goroutine 691352:
github.com/minio/minio/cmd.objectAPIHandlers.PutObjectExtractHandler.func1()
e:/gopath/src/github.com/minio/minio/cmd/object-handlers.go:2131 +0x15d
github.com/minio/minio/cmd.untar.func1()
e:/gopath/src/github.com/minio/minio/cmd/untar.go:250 +0x2b6
github.com/minio/minio/cmd.untar.func8()
e:/gopath/src/github.com/minio/minio/cmd/untar.go:261 +0xa4
```
Calling unfreezeServices twice results in panic:
```
panic: "POST /minio/peer/v32/signalservice?signal=4&sub-sys=": close of nil channel
goroutine 14703 [running]:
runtime/debug.Stack()
runtime/debug/stack.go:24 +0x65
github.com/minio/minio/cmd.setCriticalErrorHandler.func1.1()
github.com/minio/minio/cmd/generic-handlers.go:549 +0x8e
panic({0x27c3020, 0x4c9b370})
runtime/panic.go:884 +0x212
github.com/minio/minio/cmd.unfreezeServices()
github.com/minio/minio/cmd/service.go:112 +0xc7
github.com/minio/minio/cmd.(*peerRESTServer).SignalServiceHandler(0x0?, {0x4cb6af0, 0xc010b96420}, 0xc01affab00)
github.com/minio/minio/cmd/peer-rest-server.go:837 +0x13a
net/http.HandlerFunc.ServeHTTP(...)
```
If the function was called a second time `val` would not be nil, but the returned channel `ch` would be, causing the panic.
Check the channel isn't nil and also use Swap for an atomic swap instead of 2 separate operations (though we are in a mutex).
Disk level O_DIRECT support checking at xl storage initialization was
conditional on a config setting being enabled. (This never took effect
because config initialization happens after ObjectLayer is ready.) This
is not necessary as the config setting is dynamic - O_DIRECT should be
enabled via runtime config. So we need to do the disk level support
check regardless of the config setting.
- Trace needs higher buffered channels than 4000 to ensure
when we run `mc admin trace -a` it captures all information
sufficiently.
- Listen event notification needs the event channel to be
`apiRequestsMaxPerNode` * number of nodes
Currently, the retry is not fully used when there is no backup copy of
the data usage; use 5 retry attempts when we don't have any valid data,
new or backup, unless we have seen an un-recognized error.
comment in the code provides more detailed explanation
on what this PR entails and its assumptions.
this PR reduces the amount of listing() by an order
of magnitude, however there are other such calls that
still needs further optimization that shall be done
in subsequent PRs.
Add a new endpoint for "resource" metrics `/v2/metrics/resource`
This should return system metrics related to drives, network, CPU and
memory. Except for drives, other metrics should have corresponding "avg"
and "max" values also.
Reuse the real-time feature to capture the required data,
introducing CPU and memory metrics in it.
Collect the data every minute and keep updating the average and max values
accordingly, returning the latest values when the API is called.
without this the rename2() can rename the previous dataDir
causing issues for different versions of the object, only
latest version is preserved due to this bug.
Added healing code to ensure recovery of such content.
not checking w.Close() can prematurely make us
think that the w.Write() actually succeeded, apparently
Write() may or may not return an error but sometimes
only during a Close() call to the fd we may see the
error from Write() propagate.
Fdatasync(w) on the FD would return an error requiring
Close() error handling is less of a concern, however it may
happen such that fdatasync() did not return an error, where
as Close() would.
Currently, setting a new tiering target returns an error when a bucket
is versioned and the tiering credentials does not have authorization to
specify a version-id when reading or removing a specific version;
Since tiering does not require versioning anymore; avoid doing versioned
operations when performing checklist ops while adding a new tiering
configuration.
Do not error out when a provided marker is before or after the prefix, but instead just ignore it if before and return an empty list when after.
Fixes#18093
