Mike Christie wrote:
Are you sure that there are no now or will be available in the nearest
feature such (eg iSCSI) SCSI arrays with response time/latency so
small that having 5 (five) context switches or more per command, some
of which include map/unmap operations, will not increase the latency
too much? I mean, eg NFS server, which originally was user space
daemon and many people didn't want it in the kernel. Eventually, it's
in. I don't see any fundamental difference between NFS server and SCSI
target server,
Isn't the reason a NFS server is still in the kernel is becuase some of
the locking difficulties?
Might be. But from what I remember, the major reason was the
performance. After googling a bit I found many acknowledgments of that.
Vlad
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