On 2003-03-26T18:31:31,
Lincoln Dale <ltd@cisco.com> said:
> >Indeed, there are iSCSI implementations that do multipath and
> >failover.
> iSCSI is a transport.
> logically, any "multipathing" and "failover" belongs in a layer above it --
"Multipathing" on iSCSI is actually a layer below - network resiliency is
handled by routing protocols, the switching fabric etc.
> >Both iSCSI and ENBD currently have issues with pending writes during
> >network outages. The current I/O layer fails to report failed writes
> >to fsync and friends.
> these are not "iSCSI" or "ENBD" issues. these are issues with VFS.
Yes, and it is a fairly annoying issue... In particular with ENBD, a partial
write could occur at the block device layer. Now try to report that upwards to
the write() call. Good luck.
Sincerely,
Lars Marowsky-Brée <lmb@suse.de>
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