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chunked: do not write cache file to RO store #2031

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7 changes: 7 additions & 0 deletions pkg/chunked/cache_linux.go
Original file line number Diff line number Diff line change
Expand Up @@ -287,6 +287,13 @@ func (c *layersCache) load() error {
newLayers = append(newLayers, l)
continue
}

if r.ReadOnly {
// if the layer is coming from a read-only store, do not attempt
// to write to it.
continue
}

// the cache file is either not present or broken. Try to generate it from the TOC.
l, err = c.createCacheFileFromTOC(r.ID)
if err != nil {
Expand Down