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Add a writeback device to zram0 #247

@MilesBHuff

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@MilesBHuff

Switching to zram swap as per #245 has been great for server performance and stability. But RAM is still limited; I would sleep better knowing that we had 1GiB of on-disk swap as spillover, just in case. zram swap can be configured to writeback to a block device, but not on Alma Linux 9 — we'll need a newer kernel first. Accordingly, this is blocked until we are on Alma Linux 10. (#243)

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administrationThis ticket addresses server maintenance and changes.performanceThis ticket addresses server performance.

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