[pve-devel] [PATCH 00/10] Single-file-restore GUI for PBS snapshots

[Stefan Reiter <s.reiter@proxmox.com>]

Implements the necessary API for allowing single file restore via the PVE web
GUI.

This requires some adaptations of the HTTP server, to allow data streaming
without buffering - otherwise bigger restores would a) use up too much memory b)
get slowed down by the pvedaemon->pveproxy->client return path. Instead, we
transfer the data via a temporary FIFO.

Known issues/further work:
* restore VMs are not shown or stopped, they always run until timeout. Ideas
  would be to stop them when a user closes the restore window (but what if
  another user/tab/... is using the VM too?), or start a worker task for them
  (how to detect new VMs? parse proxmox-file-restore status before and after
  command?). Thoughts appreciated :)
* restarting the daemon or proxy marks the worker as failed and correctly
  stops it, but the browser says the download is OK - just with not enough data.
  Not the best experience, but unsure on how to fix this. Chunked encoding
  maybe, and terminate with an invalid chunk in case of error/abort?
* downloading an entire container archive (clicking on the root) doesn't
  currently work. I'll fix that in proxmox-file-restore.

Not required, but looks better with:
https://lists.proxmox.com/pipermail/pbs-devel/2021-April/002595.html


common: Stefan Reiter (5):
  JSONSchema: don't cycle-check 'download' responses
  PBSClient: allow running other binaries
  PBSClient: add file_restore_list command
  PBSClient: allow different command execution callback
  PBSClient: add file_restore_extract function

 src/PVE/JSONSchema.pm |   5 +-
 src/PVE/PBSClient.pm  | 107 +++++++++++++++++++++++++++++++++++-------
 2 files changed, 94 insertions(+), 18 deletions(-)

http-server: Stefan Reiter (3):
  allow 'download' to be passed from API handler
  support streaming data form fh to client
  allow stream download from path and over pvedaemon-proxy

 PVE/APIServer/AnyEvent.pm | 142 +++++++++++++++++++++++++++++++++++---
 1 file changed, 133 insertions(+), 9 deletions(-)

storage: Stefan Reiter (1):
  add FileRestore API for PBS

 PVE/API2/Storage/FileRestore.pm | 163 ++++++++++++++++++++++++++++++++
 PVE/API2/Storage/Makefile       |   2 +-
 PVE/API2/Storage/Status.pm      |   6 ++
 3 files changed, 170 insertions(+), 1 deletion(-)
 create mode 100644 PVE/API2/Storage/FileRestore.pm

manager: Stefan Reiter (1):
  backupview: add file restore button

 www/manager6/grid/BackupView.js    | 23 +++++++++++++++++++++++
 www/manager6/storage/BackupView.js | 19 +++++++++++++++++++
 2 files changed, 42 insertions(+)

-- 
2.20.1