Hi! I have a question for HA scenarios, where multiple hosts connect to a shared block device:
AFAIK, Linux buffers blocks from block devices. So if host A reads a block from shared storage (e.g. the MBR), and later host B modifies that block, will host A still have the last block read in cache? If so there's a big problem. Consider that you want to mount a non-clustered filesystem alternatingly on two hosts (like for a HA failover). If host A used the filesystem, the host B took over the filesystem without booting host A, and later host A takes back the filesystem from host B, host A might have some obsolete blocks in its buffer. Does the application have to flush the buffers explicitly, and if so: Where on a multipath device (i.e. on every path or only on the multipath device)? Sorry, if that's not directly connected to iSCSI, but to shared block storage in general. Regards, Ulrich -- You received this message because you are subscribed to the Google Groups "open-iscsi" group. To post to this group, send email to firstname.lastname@example.org. To unsubscribe from this group, send email to open-iscsi+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/open-iscsi?hl=en.