[CentOS] openfiler (was: using CentOS as an iSCSI server?)
Benjamin Franz
jfranz at freerun.comWed Oct 21 00:22:31 UTC 2009
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John R Pierce wrote: > nate wrote: > >> Network RAID – only available from HP >> >> > > Fantasy ideas (eg, I've only thought of this and never tried it). YMMV, > caveat emptor, objects in mirror may be closer than they appear, etc etc. > > 1) two ISCSI servers, each with identical storage. each offers the same > sized iscsi target to the host. the host uses mdraid 1 to mirror these. > I've done it experimentally. It worked. Obviously you can't share a raid volume with multiple client hosts. > 2) two ISCSI servers, each with identical storage, configured as > active-standby cluster, using conventional cluster management software. > active 'master' replicates block storage to 'slave' using DRBD. > > I've done this too (active-active using RH Cluster and GFS). I gave up finally because I just couldn't get reliable multipathing. The paths would keep locking up in weird ways, fail to come up (randomly), and all kinds of hate and discontent. :( -- Benjamin Franz
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