Module devicemapper::consts [−] [src]

shared constants

Modules

IEC	International Electrotechnical Commission Units Standards

Flags used by devicemapper.

DM_ACTIVE_PRESENT	Out: Active table is present.
DM_BUFFER_FULL	Out: Passed-in buffer was too small.
DM_CTL_PATH	Control path for user space to pass IOCTL to kernel DM
DM_DATA_OUT	Out: A message generated output data.
DM_DEFERRED_REMOVE	In: Do not remove in-use devices. Out: Device scheduled to be removed when closed.
DM_INACTIVE_PRESENT	Out: Inactive table is present.
DM_INTERNAL_SUSPEND	Out: Device is suspended internally.
DM_IOCTL	Indicator to send IOCTL to DM
DM_NAME_LEN	Name max length
DM_NOFLUSH	In: Suspend without flushing queued I/Os.
DM_PERSISTENT_DEV	In: Use passed-in minor number.
DM_QUERY_INACTIVE_TABLE	In: Query inactive table instead of active.
DM_READONLY	In: Device should be read-only. Out: Device is read-only.
DM_SECURE_DATA	In: All buffers are wiped after use. Use when handling crypto keys.
DM_SKIP_BDGET	Obsolete.
DM_SKIP_LOCKFS	In: Avoid freezing filesystem when suspending.
DM_STATUS_TABLE	In: STATUS command returns table info instead of status.
DM_SUSPEND	In: Device should be suspended. Out: Device is suspended.
DM_UEVENT_GENERATED	Out: A uevent was generated, the caller may need to wait for it.
DM_UUID	In: Rename affects UUID field, not name field.
DM_UUID_LEN	UUID max length
DM_VERSION_MAJOR	Major version
DM_VERSION_MINOR	Minor version
DM_VERSION_PATCHLEVEL	Patch level
MIN_BUF_SIZE	Start with a large buffer to make BUFFER_FULL rare. Libdm does this too.s
SECTOR_SIZE	disk sector size in bytes