Neil Brown wrote:
But if you use 1.0, then some well-meaning install program might mount one drive from a raid1 as a filesystem, write to it, and get your RAID all out of sync.
One more thing on this: this is actually fine as long as the RAID code detects the out-of-syncness. This can't be foolproof, of course, but for virtually all filesystems there is *something* in the first megabyte or so (usually within the first 128K) that is touched by almost every write -- the superblock, or its equivalent.
If the RAID code did a sanity check on the first megabyte, it would catch the vast majority of all unintentional desynchronization events.
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