Name 

Description 

PRL_DISK_ALIGN_REQUESTS 

Incoming requests to read/write async must be gathered and aligned 

PRL_DISK_ALLOW_DATA_MODIFY 

Allow inplace data modification to reduce memory copying and allocation 

PRL_DISK_CACHE_DEFAULT 

Disk cache default. 

PRL_DISK_CACHE_DISABLED 

Uncached access to disk image. 

PRL_DISK_CACHE_ENABLED 

Cached access to disk image. 

PRL_DISK_CACHE_UNCACHED_READ 

Cached write/uncached read. 

PRL_DISK_CACHE_UNCACHED_SEQ_READ 

Like PRL_DISK_CACHE_UNCACHED_READ, but cache is enabled for

• small and random/reordered requests. 

PRL_DISK_DEFAULT_FLAG 

Default (writelock always on at write on). 

PRL_DISK_FAKE_OPEN 

Fake open, just for parameters get (processed by real disks that need administrative privileges to work with). 

PRL_DISK_FOPS_DEFAULT 

Default access mode that compiled in Virtuozzo itself. 

PRL_DISK_FOPS_MASK 

Type of the file access to use (15 file accessors is enough). 

PRL_DISK_FOPS_MERGING 

DEPRECATED! Access mode with requests merging. 

PRL_DISK_FOPS_NONCACHED 

DEPRECATED! Access mode with file caching turned off. 

PRL_DISK_FOPS_NORMAL 

DEPRECATED! Normal access mode (default os) 

PRL_DISK_FOPS_PCS 

DEPRECATED! Access mode to files on PCS storage 

PRL_DISK_IGNORE_PROTECTION 

Ignore storages read only flag (useful at disk creation) 

PRL_DISK_INVALID 

Last (invalid). 

PRL_DISK_NO_ERROR_CHECKING 

Force open of disk for reading without error checking 

PRL_DISK_NO_SPACE_CHECKS 

Do not check host free space 

PRL_DISK_NOT_LIMIT_HANDLES 

Do not use handle pool for disk image handles 

PRL_DISK_NOTHING 

Nothing. 

PRL_DISK_PROGRESS_COMPLETED 

 

PRL_DISK_PROGRESS_MAX 

 

PRL_DISK_PROGRESS_MIN 

States progress definition. 

PRL_DISK_READ 

Read 

PRL_DISK_READ_LOCK 

ReadLock 

PRL_DISK_USE_RAW_DISK 

Use raw disk for BootCamp partition (/dev/rdisk instead of /dev/disk) 

PRL_DISK_WRITE 

Write 

PRL_DISK_XML_CHANGE 

This parameter is used when user need to change XML data but not access to the drive itself.