Parallels Virtualization SDK
PRL_DISK__ Macros
PRL_DISK__
Macros
Name
Description
Incoming requests to read/write async must be gathered and aligned
Allow inplace data modification to reduce memory copying and allocation
Special for backup operation
Disk cache default.
Uncached access to disk image.
Cached access to disk image.
Cached write and uncached read is used, while filesystem cache does not grow large enough.
Cached write/uncached read.
Like PRL_DISK_CACHE_UNCACHED_READ , but cache is enabled for
  • small and random/reordered requests.
Default (writelock always on at write on).
Explicitly enable re-open disk with non-current snapshot (useful for backup, reclame all snapshots etc.)
Fake open, just for parameters get (processed by real disks that need administrative privileges to work with).
Default access mode that compiled in Parallels itself.
Type of the file access to use (15 file accessors is enough).
DEPRECATED! Access mode with requests merging.
DEPRECATED! Access mode with file caching turned off.
DEPRECATED! Normal access mode (default os)
DEPRECATED! Access mode to files on PCS storage
Ignore storages read only flag (useful at disk creation)
Last (invalid).
Force open of disk for reading without error checking
So not create image when creating disk, just put reference to file in XML
Do not check host free space
Do not use handle pool for disk image handles
Nothing.
States progress definition.
Read
ReadLock
Use raw disk for BootCamp partition (/dev/rdisk instead of /dev/disk)
Write
This parameter is used when user need to change XML data but not access to the drive itself.
Copyright © 1999-2017 Parallels International GmbH. All rights reserved.