Author: Chris Language: text
Description: ZFS again Timestamp: 2015-07-21 19:15:33 +0000
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  1. Hi guys,
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  3. I love the show, thank you for putting it together. I have no idea how you guys find the time... I know the time and work commitment you put in each weak must be extraordinary.
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  5. You recently described a ZFS backup strategy in which mirrored sets are rotated in and out of a pool like a tape backup.  I have some questions about these "hot swapping" backup approaches:
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  7. 1. When an "old" set is brought back online, does it undergo a full resilver?
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  9. 2. Can you comment on Jordan Hubbard's implication that hot swapping hard drives damages their electronics? [1]
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  11. 3. After unmounting file systems, what more should I do before hot-unplugging  the drives? e.g. is there a camcontrol command I should issue? [2]
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  13. 4. How do you guarantee that each drive in the mirrored set was offlined at the same instant in time?  Or perhaps you don't need to?
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  15. Thanks again,
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  17. Chris
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  19. [1] See comment 6: https://bugs.freenas.org/issues/10163#note-6
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  21. [2] Asked with more detail at https://lists.freebsd.org/pipermail/freebsd-questions/2015-June/266396.html
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