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feat(mounts): Expose options to control whether host mounts are cached or not #56

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Merged
bleggett merged 1 commit into from
Sep 9, 2026
Merged

feat(mounts): Expose options to control whether host mounts are cached or not #56

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13 changes: 13 additions & 0 deletions protect/control/v1/common.proto
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Original file line number Diff line number Diff line change
Expand Up @@ -187,10 +187,22 @@ message ProcessSpec {
repeated int64 additional_gids = 13;
}

// How a host mount is cached inside the zone. CACHED enables caching for the host mount.
// NONE disables mount caching.
//
// The KVM backend currently doesn't use this, because it doesn't support per-mount FS devices.
enum MountCacheMode {
// Treated as CACHED.
MOUNT_CACHE_MODE_UNKNOWN = 0;
MOUNT_CACHE_MODE_CACHED = 1;
MOUNT_CACHE_MODE_NONE = 2;
}

message MountSpec {
string host_path = 1;
string target_path = 2;
bool read_only = 3;
MountCacheMode cache = 4;
}

message EnvironmentVariableSpec {
Expand Down Expand Up @@ -628,6 +640,7 @@ message WorkloadMountInfo {
string host_path = 3;
string target_path = 5;
bool read_only = 6;
MountCacheMode cache = 7;
reserved 1, 4;
}

Expand Down