About Filesystem freeze/thaw in freebsd

[andy zhang]

Thanks, I have already tried "UFSSUSPEND/UFSRESUME ioctls on the
/dev/ufssuspend", and I found it actually not work. In Linux, if I send
freeze ioctl, all write operations will be blocked unless I send thaw ioctl. 
   While for "UFSSUSPEND/UFSRESUME ioctls", it does not work in that way.
that is:
   If I send UFSSUSPEND ioctl, I still can do write operations, like create
files, etc.

   I am still looking that the code of ufssuspend, and if that really not
works, i may implement that in my driver level. thanks for any advice.



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