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FUSE and Reed Solomon #252

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jkiebzak opened this issue Jun 23, 2021 · 2 comments
Open

FUSE and Reed Solomon #252

jkiebzak opened this issue Jun 23, 2021 · 2 comments

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@jkiebzak
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While using the FUSE mount, how do I specify that files should be written with Reed Solomon replication?

@mikeov
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mikeov commented Jul 22, 2021

Fuse write support is incomplete for replicated files, and RS support is even more limited.
File create parameters can can be specified with create=S mount option. With this option QFS fuse will emit warning about limited write support including RS write specifics.

File create parameters:
,,,,,<min. storage tier>,<max. storage tier>
S is shortcut for 1,6,3,65536,2,15,15
data stripe count: from 1 to 64 with Reed Solomon encoding (RS), and up to 511 with no recovery
recovery stripe count: 0, or 3 with RS
stripe size: from 4096 to 67108864 in 4096 increments
stiper type: 1 no stiping, or 2 is RS
min. storage tier: 15 from 0 to 15
max. storage tier: 15 from 0 to 15

@jkiebzak
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jkiebzak commented Jul 22, 2021 via email

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