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authorMatthew Heon <mheon@redhat.com>2022-03-17 10:40:55 -0400
committerMatthew Heon <mheon@redhat.com>2022-03-17 10:45:08 -0400
commit0793a58343a49b2ed30d3da2d10dd5f14cc13f1a (patch)
treebe0beec90630c74b3e29411451b66ec8c56962c8 /cmd/podman
parentecd2746ce36db6ebe5d99b26045f197cb136cd61 (diff)
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Deduplicate between Volumes and Mounts in compat API
Docker Compose v2.0 passes mount specifications in two different places: Volumes (just the destination) and Mounts (full info provided - source, destination, etc). This was causing Podman to refuse to create containers, as the destination was used twice. Deduplicate between Mounts and Volumes, preferring volumes, to resolve this. Fixes #11822 Signed-off-by: Matthew Heon <mheon@redhat.com>
Diffstat (limited to 'cmd/podman')
-rw-r--r--cmd/podman/common/create_opts.go13
1 files changed, 11 insertions, 2 deletions
diff --git a/cmd/podman/common/create_opts.go b/cmd/podman/common/create_opts.go
index b110b3d85..e5a2a0da3 100644
--- a/cmd/podman/common/create_opts.go
+++ b/cmd/podman/common/create_opts.go
@@ -97,12 +97,21 @@ func ContainerCreateToContainerCLIOpts(cc handlers.CreateContainerConfig, rtc *c
}
// mounts type=tmpfs/bind,source=...,target=...=,opt=val
+ volSources := make(map[string]bool)
+ volDestinations := make(map[string]bool)
mounts := make([]string, 0, len(cc.HostConfig.Mounts))
var builder strings.Builder
for _, m := range cc.HostConfig.Mounts {
addField(&builder, "type", string(m.Type))
addField(&builder, "source", m.Source)
addField(&builder, "target", m.Target)
+
+ // Store source/dest so we don't add duplicates if a volume is
+ // also mentioned in cc.Volumes.
+ // Which Docker Compose v2.0 does, for unclear reasons...
+ volSources[m.Source] = true
+ volDestinations[m.Target] = true
+
if m.ReadOnly {
addField(&builder, "ro", "true")
}
@@ -328,8 +337,6 @@ func ContainerCreateToContainerCLIOpts(cc handlers.CreateContainerConfig, rtc *c
}
// volumes
- volSources := make(map[string]bool)
- volDestinations := make(map[string]bool)
for _, vol := range cc.HostConfig.Binds {
cliOpts.Volume = append(cliOpts.Volume, vol)
// Extract the destination so we don't add duplicate mounts in
@@ -348,6 +355,8 @@ func ContainerCreateToContainerCLIOpts(cc handlers.CreateContainerConfig, rtc *c
// format of `-v` so we can just append them in there.
// Unfortunately, these may be duplicates of existing mounts in Binds.
// So... We need to catch that.
+ // This also handles volumes duplicated between cc.HostConfig.Mounts and
+ // cc.Volumes, as seen in compose v2.0.
for vol := range cc.Volumes {
if _, ok := volDestinations[filepath.Clean(vol)]; ok {
continue