More inodes needed

[bryanlarsen]

Is this a BUG REPORT or FEATURE REQUEST? (choose one):

Could be either, depending on view

Minikube version (use minikube version):

v0.18.0

Environment:

• OS: Ubuntu 16.04.2 using vagrant-lxc to run inside Ubuntu 16.04.2
• VM Driver: kvm
• ISO version: v0.18.0
• Install tools:
• Others:

What happened:

Ran out of inodes.

$ df -i
Filesystem      Inodes   IUsed  IFree IUse% Mounted on
devtmpfs        245140     337 244803    1% /dev
tmpfs           256053       1 256052    1% /dev/shm
tmpfs           256053     797 255256    1% /run
tmpfs           256053      14 256039    1% /sys/fs/cgroup
tmpfs           256053      59 255994    1% /tmp
/dev/sda1      2434064 2428665   5399  100% /mnt/sda1

What you expected to happen:

Default minikube environment would have enough inodes to run a replica of a good sized production environment

How to reproduce it (as minimally and precisely as possible):

Build a good number of docker images.

Anything else do we need to know:

See #1380 for a better long term solution and more background information, but in the interim, just formatting the partition with more inodes could help a lot. We could format with mkfs.ext4 -N 20000000; a better idea might be just to choose a better inode ratio, perhaps mkfs.ext4 -T news.

[bryanlarsen]

I guess this is the mkfs line here:

minikube/deploy/iso/minikube-iso/package/automount/minikube-automount

Line 55 in 4293b01

mkfs.ext4 -i 8192 -L $LABEL $BOOT2DOCKER_DATA

the -i 8192 option is used, lowering this to -i 4096 or even lower would increase the number of inodes, I believe.

[aaron-prindle]

I don't see any issue with changing the partition to have more inodes. Could you submit a PR making this change in minikube-automount? The CI will build the iso then you can test the iso w/ your workload using the CI build by running minikube start --iso-url=https://storage.googleapis.com/minikube-builds/PR_NUMBER/minikube-testing.iso

[bryanlarsen]

That's pretty cool. I'm currently building locally, but it takes a long time to build an entire Linux distribution!