Documentation
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Overview ¶
Package storagetransfer provides HTTP streaming of vdisk files and subvolumes to/from presigned S3 URLs. It is used to move a deployment's persistent bytes (zmount disks and VM rootfs layers) between nodes during a contract move. The helpers are shared by both the storage and storage_light modules.
Index ¶
Constants ¶
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Variables ¶
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Functions ¶
func DownloadDir ¶
DownloadDir GETs url and extracts the tar stream into `dir`.
func DownloadToFile ¶
DownloadToFile GETs url and writes the body into an existing file, truncating it.
func UploadDir ¶
UploadDir streams a tar of `dir` to url. It uses two passes so it needs no temp file (nodes run from a small tmpfs): pass 1 tars to a byte counter to get the exact Content-Length (presigned PUT rejects chunked encoding), pass 2 tars straight into the request body via an io.Pipe. The source is a paused VM's rootfs, so it is static between the two passes.
func UploadFile ¶
UploadFile PUTs a seekable file so net/http sets a definite Content-Length (presigned S3/MinIO PUT rejects chunked transfer encoding).
Types ¶
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Source Files