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On Tuesday 21 Mar 2017 22:50:04 Kai Krakow wrote: |
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> I'm combining this with bcache. That's a cache between kernel and |
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> filesystem that you put on SSD. Apparently, it requires repartitioning |
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> to map your filesystem through bcache (it has to add a protective |
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> superblock in front of your FS). So, a small SSD + bcache can make your |
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> complete 500GB spinning rust act mostly like SSD perfomance-wise. |
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> |
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> I think there's a script that can move your FS 8 kB forward on HDD to |
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> add that bcache superblock. But I wouldn't try that without backup and |
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> some spare time. But it is a performance wonder. |
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> |
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> Using 3x 1TB btrfs RAID + 500GB bcache here. The system feels like an |
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> SSD system but I don't have to decide what to put on a small SSD and |
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> what to put on big slow storage. Is just automagic. ;-) |
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You have me thinking now. I have a couple of spare 1TB SSDs here, and my |
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workstation is a 12-core i7 running on a 256GB NVMe drive with 32 GB RAM. |
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Maybe I should put the SSDs into a RAID-1 to contain the system (the same as |
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they were in the old, now defunct box), then use the NVMe for bcache. What |
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do you think of that idea? I'm not desperately short of space, but I've none |
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spare either. |
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The workstation's full time is spent running physics BOINC projects. That's |
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all other than the usual desktop tasks. |
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-- |
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Regards |
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Peter |
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