[pbs-devel] [PATCH proxmox v4 0/2] restore files from pxar sparsely

[Dominik Csapak <d.csapak@proxmox.com>]

to be able to restore containers with big sparse files

ideally we would save hole information directly in the pxar archive
and not even use zero chunks, so that we can have smaller
pxar archives, and accurately restore sparse files like they were before

for now, restore all files sparsely

changes from v3:
* collect subsequent holes, so that we only seek one time per hole
* add tests for sparse_copy(_async)
* also return if the last operation was a seek and only truncate then
* create buffer with explicit 4096 bytes
* use rustfmt
* adds a patch to add poll_once to proxmox module (for async testing)

changes from v2:
* always sparse copy and truncate after

changes from RFC:
* drop the zero module of proxmox, rust can generate fast code by itself

proxmox:

Dominik Csapak (2):
  proxmox/tools: add poll_once module for testing
  proxmox: add sparse_copy(_async) to tools::io

 proxmox/src/tools/io/mod.rs | 320 ++++++++++++++++++++++++++++++++++++
 proxmox/src/tools/mod.rs    |  36 ++++
 2 files changed, 356 insertions(+)

proxmox-backup:

Dominik Csapak (1):
  pxar/extract: if possible create files sparesly

 src/pxar/extract.rs | 43 ++++++++++++++++++++++++++++++++++++-------
 1 file changed, 36 insertions(+), 7 deletions(-)

-- 
2.20.1