HP-UX

lvmkd 데몬은 어떤 데몬인가요?

 
이정규
비정기 기여자

lvmkd 데몬은 어떤 데몬인가요?

ps -ef상에서 데몬들을 확인해보니까 lvmkd라는 데몬이 돌아가던데요...

이 데몬은 어떤 데몬인가요? 제가 가진 자료에서는 찾을 수가 없네요.



알고계신분 부탁드립니다.



자료있으면 더 감사하구요.
1 응답 1
고광태
중학생

lvmkd 데몬은 어떤 데몬인가요?

lvmkd 는 queue 를 지켜보는 프로세스 데몬입니다. queue 안으로 job 이 들어오면 lvmkd 는 프로세스로써 job을 올립니다.



이것은 kernel 에 의해서 관리됩니다.



The following are the routines that call lvmkd:



* NAME: lv_check_pf_pvs

*

* FUNCTION:

* Look at all disks belonging to any volume group, if the device is readable.

* assume it has come back to life and restart any I/O waiting for it.



* NAME: lv_startpv

*

* FUNCTION: Initiate all I/O pending for a given physical volume.

* Must not be called from within an interrupt

* service routine (biodone) to prevent recursion

* and reentry of the physical disk driver.



* NAME: lv_reschedule

*

* FUNCTION:

* Schedule pended logical operations. This function is called

when ever physical buffers have been released and there are

logical buffers waiting for physical buffers. This will

schedule as many pended logical buffers as possible given the

number of available physical buffers.

*

* NAME: lv_begin

*

* FUNCTION:

* Begin physical I/O operations.

* NAME: lv_initiate

*

* FUNCTION: Initiate all ready logical requests for a logical

volume.

*

* lv_resync_pfpv:

*

* For every PV in every VG, check for the LVM_PVNEEDSYNC flag

* and resync those PVs.