Mount error shouldn't be ignored

[cwen0]

This error shouldn't be ignored:

[2021-01-14 20:24:11.338447 +08:00] INFO [toda::ptrace] src/ptrace/mod.rs:100: detach process: 5282 successfully
Error: source: /var/lib/mysql/data/mydata/wenlin/, target: /var/lib/mysql/data/mydata/__chaosfs__wenlin__

Caused by:
    EINVAL: Invalid argument

Stack backtrace:
   0: <E as anyhow::context::ext::StdError>::ext_context
             at ./root/.cargo/registry/src/github.com-1ecc6299db9ec823/anyhow-1.0.31/src/backtrace.rs:26
      anyhow::context::<impl anyhow::Context<T,E> for core::result::Result<T,E>>::context::{{closure}}
             at ./root/.cargo/registry/src/github.com-1ecc6299db9ec823/anyhow-1.0.31/src/context.rs:50
      core::result::Result<T,E>::map_err
             at ./rustc/16957bd4d3a5377263f76ed74c572aad8e4b7e59/src/libcore/result.rs:612
      anyhow::context::<impl anyhow::Context<T,E> for core::result::Result<T,E>>::context
             at ./root/.cargo/registry/src/github.com-1ecc6299db9ec823/anyhow-1.0.31/src/context.rs:50
      toda::mount::MountsInfo::move_mount
             at src/mount.rs:42
   1: toda::mount_injector::MountInjector::mount
             at src/mount_injector.rs:115
   2: toda::inject
             at src/main.rs:75
      toda::main
             at src/main.rs:139
   3: std::rt::lang_start::{{closure}}
             at ./rustc/16957bd4d3a5377263f76ed74c572aad8e4b7e59/src/libstd/rt.rs:67
   4: std::rt::lang_start_internal::{{closure}}
             at src/libstd/rt.rs:52
      std::panicking::try::do_call
             at src/libstd/panicking.rs:342
      std::panicking::try
             at src/libstd/panicking.rs:319
      std::panic::catch_unwind
             at src/libstd/panic.rs:394
      std::rt::lang_start_internal
             at src/libstd/rt.rs:51
   5: main
   6: <unknown>
   7: _start

[brutus333]

Hello! I'm hitting this error but maybe it's a matter of misconfiguration. Please tell me what exactly should I use for path and volumePath while injecting failure into a pod: I used the paths as visible into the pod but maybe my understanding is not correct.

[YangKeao]

@brutus333 volumePath is the mount path and the path is a glob. For example, if your volumes are mounted at /mnt, and you want to inject chaos for files matching /mnt/some_directory_you_want_to_inject/**/*, you should set volumePath to /mnt and path to /mnt/some_directory_you_want_to_inject/**/*.