What is testable and should work :

• restore from partition of types :
  • ext2 / ext3 / ext4
  • XFS
  • Btrfs
  • FAT / VFAT / exFAT (in-kernel since 5.7)
  • NTFS3 (new in-kernel driver, since 5.15 — parallel to ntfs-3g)
  • f2fs
  • ISO 9660 / UDF (optical media)
  • squashfs / erofs (read-only images)
• restore from LVM as long as there is only one VDI involved
• handle disk without partition table, with GTP, with MBR

Note that, by design, the file restore is slow : each time the xoa want to read 4KB of data or even 1B we have to load a full backup block (2MB) decrypt, and inflate it ,extract the 4KB , ... . Expect 1/10 to 1/30 of your remote performance

But at least it should not crash anymore, with zip or tar restore. The worse we tested is a windows folder ( 26GB , 10 of thousands of files)

For now the fixes are in https://github.com/vatesfr/xen-orchestra/pull/9776 ( branch fix_flr ) and are expected to reach master during next week

fbeauchamp opened this pull request in vatesfr/xen-orchestra

open fix(backups): file level restore : omnibus fixes #9776