improve(apiserver):check localdisk exist before using

[hikariwo]

What this PR does / why we need it:

check localdisk exist before using

Special notes for your reviewer:

Does this PR introduce a user-facing change?

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (4d8e24b) 28.74% compared to head (b0b44ff) 28.74%.
Report is 27 commits behind head on main.

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Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1339   +/-   ##
=======================================
  Coverage   28.74%   28.74%           
=======================================
  Files          34       34           
  Lines        3079     3079           
=======================================
  Hits          885      885           
  Misses       2077     2077           
  Partials      117      117           

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[hikariwo]

@peng9808 can you have a look?

[peng9808]

lgtm