This change adds support for CDI devices to the ctr --device flag.
If a fully-qualified CDI device name is specified, this is injected
into the OCI specification before creating the container.
Note that the CDI specifications and the devices that they represent
are local and mirror the behaviour of linux devices in the ctr command.
Signed-off-by: Evan Lezar <elezar@nvidia.com>
This flag allows cpuset.mems to be specified when running a container. If
provided, the container will use only the defined memory nodes.
Signed-off-by: Peteris Rudzusiks <rye@stripe.com>
This flag allows cpuset.cpus to be specified when starting a container. If
provided, the container will use only the defined CPU cores.
Signed-off-by: Peteris Rudzusiks <rye@stripe.com>
From golangci-lint:
> SA1019: rand.Read has been deprecated since Go 1.20 because it
>shouldn't be used: For almost all use cases, crypto/rand.Read is more
>appropriate. (staticcheck)
> SA1019: rand.Seed has been deprecated since Go 1.20 and an alternative
>has been available since Go 1.0: Programs that call Seed and then expect
>a specific sequence of results from the global random source (using
>functions such as Int) can be broken when a dependency changes how
>much it consumes from the global random source. To avoid such breakages,
>programs that need a specific result sequence should use
>NewRand(NewSource(seed)) to obtain a random generator that other
>packages cannot access. (staticcheck)
See also:
- https://pkg.go.dev/math/rand@go1.20#Read
- https://pkg.go.dev/math/rand@go1.20#Seed
Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
The `ctr image usage` can display the usage of snapshots with a given
image ref. It's easy for user to get chain snapshot IDs and unpack
usage. And according to the [discuss][1], this subcommand can be used to
ensure if snapshot's pagecache has been discarded in a unexpected
reboot.
How to use it:
```bash
$ bin/ctr image usage --snapshotter native docker.io/library/golang:1.19.3
ctr: image docker.io/library/golang:1.19.3 isn't unpacked in snapshotter native
$ bin/ctr image usage --snapshotter overlayfs docker.io/library/golang:1.19.3
KEY SIZE INODES
sha256:28114d8403bac6352c3e09cb23e37208138a0cd9d309edf3df38e57be8075a1d 16.0 KiB 4
sha256:f162c02ce6b9b594757cd76eda1c1dd119b88e69e882cb645bf7ad528b54f0d2 476.2 MiB 13660
sha256:a5b9faceaa495819b9ba7011b7276c4ffaffe6c7b9de0889e11abc1113f7b5ca 225.5 MiB 3683
sha256:412b2615d27d6b0090558d25b201b60a7dff2a40892a7e7ca868b80bf5e5de41 159.8 MiB 6196
sha256:dbce1593502d39c344ce089f98187999f294de5182a7106dcb6c9d04ce0c7265 19.4 MiB 502
sha256:8953bf5d24149e9b2236abc76bd0aa14b73828f1b63e816cb4b457249f6125bc 12.2 MiB 958
sha256:ccba29d6937047c719a6c048a7038d3907590fbb8556418d119469b2ad4f95bc 134.7 MiB 7245
$ bin/ctr image usage --snapshotter overlayfs docker.io/library/golang:1.19
ctr: failed to ensure if image docker.io/library/golang:1.19 exists: image "docker.io/library/golang:1.19": not found
```
[1]: <https://github.com/containerd/containerd/issues/5854#issuecomment-1415915765>
Signed-off-by: Wei Fu <fuweid89@gmail.com>
