Overlayfs TODO

Table of Contents Compliance Performance Testing Features

Compliance

• SELinux support (v4.8)
• POSIX ACL fixes (v4.8..v4.9)
• File locks (v4.9)
• Redirect dir (v4.10)
  • Redirect by file handle (RFC)
• Consistent rd/wr file descriptor (v4.12 ?)
• Constant st_ino/d_ino (POC)
  • Rename dtype (POC)
  • Unbreaking hardlinks (???)
  • NFS export (???)

Performance

• Clone up (v4.10)
• Concurrent copy up (v4.11-rc1)

Testing

• Write xfstests to cover all overlayfs non standard behavior issues
• unionmount-testsuite recycle layers
  • unionmount-testsuite configure recycle points
• xfstests mount cycle of base fs on -overlay run
  • xfstests mkfs of base fs on -overlay run
• Stress test

Features

• Recycle upper layer of mounted overlay (???)
• Offline/online layers merge tool