XFS real-time allocator

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Hi all,

I have created a real-time partition as follows.

root@node2:~# mkfs.xfs -f -r rtdev=/dev/sda3 /dev/sda4

meta-data=/dev/sda4              isize=256    agcount=4, agsize=56122440 blks

         =                       sectsz=512   attr=2, projid32bit=0

data     =                       bsize=4096   blocks=224489757, imaxpct=25

         =                       sunit=0      swidth=0 blks

naming   =version 2              bsize=4096   ascii-ci=0

log      =internal log           bsize=4096   blocks=109614, version=2

         =                       sectsz=512   sunit=0 blks, lazy-count=1

realtime =/dev/sda3              extsz=4096   blocks=14865657,
rtextents=14865657


I wonder how to use its real-time feature. And I should call some interfaces
supported by XFS in the user/kernel-space, right?


-- 
Thanks
Weiwei  Jia (Harry Wei)

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