Hi Jeff,
Thanks a lot for your reply.
On 2022/9/27 3:52, Jeff Moyer wrote:
"Yang, Xiao/杨 晓" <yangx.jy@xxxxxxxxxxx> writes:
Hi Ross, Toshi, Jeff and others
After reading the kernel patches[1][2][3] about dm, I think only three
types(linear, stripe and log-writes) of dm can support DAX now, right?
Right.
I wonder why only three types of dm need to support DAX? Is there any
reason/history and use case?
It was easy to add DAX support to those targets. Note that if a target
needs to intercept I/O, then it is fundamentally incompatible with DAX.
How can I know which target needs to intercept I/O? Could you tell me
why it is fundamentally incompatible with DAX?
Best Regards,
Xiao Yang
Cheers,
Jeff
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