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capacityを小さめにNVMを作った際のエラーを親切にする #2

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sile opened this issue Oct 17, 2018 · 0 comments

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sile commented Oct 17, 2018

例えば

let dir = track_io!(TempDir::new("cannyls_test"))?;
let nvm = track!(FileNvm::create(
    dir.path().join("test.lusf"),
    Alignment::min().ceil_align(2048)
))?;
let mut storage = track!(StorageBuilder::new().journal_region_ratio(0.5).create(nvm))?;

など書いて

Error: Other (cause; failed to write whole buffer)
HISTORY:
  [0] at src/nvm/mod.rs:96
  [1] at src/storage/builder.rs:134
  [2] at src/storage/mod.rs:650

と出てもどうして良いか分からない。
（capacityが足りないことに察しがついたとしても、何故足りないのかエスパーするのが難しい）

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