softgose.blogg.se - february 2022

#Docker for mac qcow2 vs raw update#
#Docker for mac qcow2 vs raw Offline#

#Docker for mac qcow2 vs raw update#

Update 2019: many updates have been done to Docker for Mac since this answer was posted to help mitigate problems (notably: supporting a different filesystem).Ĭleanup is still not fully automatic though, you may need to prune from time to time. Perhaps 64GiB is too large for some environments and a We’re also looking at making the maximum size of the.

#Docker for mac qcow2 vs raw Offline#

We’ll create a compaction tool which can be run offline to shrink theĭisk (a bit like the qemu-img convert but without the dd if=/dev/zeroĪnd it should be fast because it will already know where the emptyĢ) we’ll automate running of the compaction tool over VM reboots,ģ) we’ll switch to an online compactor (which is a bit like a GC in a Implement free-block tracking in a metadata file next to the qcow2. Planning / design stage, but I hope it gives you an idea)ġ) we’ll switch to a connection protocol which supports TRIM, and We’re hoping to fix this in several stages: (note this is still at the qcow2 file causing it to grow in size, until itĮventually becomes fully allocated. New sectors are written to the block device.

As new files are created in the filesystem by containers, qcow2 is exposed to the VM as a block device with a maximum size To see the physical size of the file you can use this command:ĭocker on Mac has an additional problem that is hurting a lot of people: the docker.qcow2 file can grow out of proportions (up to 64gb) and won’t ever shrink back down on its own.Īs stated in one of the replies by djs55 this is in the planning to be fixed, but its not a quick fix. This can be somehow misleading because it will output the logical size of the file rather than its physical size. It is also worth mentioning that file size of docker.qcow2 (or Docker.raw on High Sierra with Apple Filesystem) can seem very large (~64GiB), larger than it actually is, when using the following command: You can alias them, and/or put them in a CRON job to regularly clean up the local disk. These are safe to run, they won’t delete image layers that are referenced by images, or data volumes that are used by containers.

docker volume rm $(docker volume ls -qf dangling=true) – remove volumes that are not used by any containers.

docker rmi $(docker images -f "dangling=true" -q) – remove image layers that are not used in any images.

docker rm $(docker ps -f status=exited -aq) – remove stopped containers.

These three commands clear down anything not being used: In a dev environment with lots of building and running, that can be a lot of disk space. There are three areas of Docker storage that can mount up, because Docker is cautious – it doesn’t automatically remove any of them: exited containers, unused container volumes, unused image layers. See the Docker system prune docs Solution no. Use the –volumes flag when running the command to prune volumes as well:ĭocker now has a single command to do that: docker system prune -a -volumes 1:īy default, volumes are not removed to prevent important data from being deleted if there is currently no container using the volume. The easiest way to workaround the problem is to prune the system with the Docker utilties. How can I face this problem?Ģ020 and the problem persists, leaving this update for the community: My OS is OSX 10.11.6.Īt the end of the day I see I keep losing Mbs. The containers that are created from custom images, running from node and a standard redis. The lifecycle I’m applying to my containers is: > docker build. I noticed that every time I run an image and delete, my system doesn’t return to the original amount of available space.