I'm being exposed to drbd for the first time, and I'm not impressed. I'm finding it's a sort-of inflexible kludge for the purpose of mirroring storage locally and remotely.
What about md or lvm mirroring to an iscsi device? Experience? Opinions? Ideally, I'd love to see something comparable to zfs mirroring with an iscsi device. That is - If the iscsi device disappears and reappears, it only needs to resilver the blocks that changed in the meantime. And the iscsi device is never inconsistent. (Both characteristics lacking by drbd). But I don't have a lot of experience with md or lvm mirroring.
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