On Aug 30, 2021, at 7:14 PM, Xiubo Li <xiubli@xxxxxxxxxx<mailto:xiubli@xxxxxxxxxx>> wrote: We are using “Most Recently Used” - however there are 50 ESXi hosts all trying to access the same data stores, so it’s very possible that one host is choosing iSCSI gateway 1 and another host is choosing iSCSI gateway 2. If so, you need to fix this. I did a quick test where I re-enabled a second iSCSI gateway to take a closer look at the paths on the ESXi hosts and I definitely see that when the second path becomes available, different hosts are pointing to different gateways for the Active I/O Path. I was reading on how ALUA works and as far as I can tell, isn’t CEPH supposed to indicate to the ESXi hosts which iSCSI gateway “owns” a given LUN at any point so that the hosts know which path to make active? Could there be something wrong where more than one iSCSI gateway is advertising that it owns the LUN to the ESXi hosts? -Paul _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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