Avi Kivity 4ad212dc01 Merge "Fix memory leak on zone reclaim" from Tomek
"_free_segments_in_zones is not adjusted by
segment_pool::reclaim_segments() for empty zones on reclaim under some
conditions. For instance when some zone becomes empty due to regular
free() and then reclaiming is called from the std allocator, and it is
satisfied from a zone after the one which is empty. This would result
in free memory in such zone to appear as being leaked due to corrupted
free segment count, which may cause a later reclaim to fail. This
could result in bad_allocs.

The fix is to always collect such zones.

Fixes #3129
Refs #3119
Refs #3120"

* 'tgrabiec/fix-free_segments_in_zones-leak' of github.com:scylladb/seastar-dev:
  tests: lsa: Test _free_segments_in_zones is kept correct on reclaim
  lsa: Expose max_zone_segments for tests
  lsa: Expose tracker::non_lsa_used_space()
  lsa: Fix memory leak on zone reclaim
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Scylla

Quick-start

$ git submodule update --init --recursive
$ sudo ./install-dependencies.sh
$ ./configure.py --mode=release
$ ninja-build -j4 # Assuming 4 system threads.
$ ./build/release/scylla
$ # Rejoice!

Please see HACKING.md for detailed information on building and developing Scylla.

Running Scylla

  • Run Scylla
./build/release/scylla

  • run Scylla with one CPU and ./tmp as data directory
./build/release/scylla --datadir tmp --commitlog-directory tmp --smp 1
  • For more run options:
./build/release/scylla --help

Building Fedora RPM

As a pre-requisite, you need to install Mock on your machine:

# Install mock:
sudo yum install mock

# Add user to the "mock" group:
usermod -a -G mock $USER && newgrp mock

Then, to build an RPM, run:

./dist/redhat/build_rpm.sh

The built RPM is stored in /var/lib/mock/<configuration>/result directory. For example, on Fedora 21 mock reports the following:

INFO: Done(scylla-server-0.00-1.fc21.src.rpm) Config(default) 20 minutes 7 seconds
INFO: Results and/or logs in: /var/lib/mock/fedora-21-x86_64/result

Building Fedora-based Docker image

Build a Docker image with:

cd dist/docker
docker build -t <image-name> .

Run the image with:

docker run -p $(hostname -i):9042:9042 -i -t <image name>

Contributing to Scylla

Guidelines for contributing

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