The error message says "Permission denied" but it doesn't say what the file name is about greptimedb HOT 7 CLOSED

Sorry for the inconvenience.

It should be $data_home/metadata, where $data_home is default to /tmp/greptimedb

If /tmp is not available, could you please try to override the default data home with --data-home command line option? E.g.:

greptime standalone start --data-home "/var/lib/greptime"

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BTW, the Permission denied error is from third-party dep raft-engine. Maybe we should check permission before passing it to raft-engine.

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It should never print a message with the error code without the relevant detail like the file name.

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Maybe we should check permission before

Or enrich the error with path configured when getting such IO error.

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There should be a log right before the error that contains the directory, like here is what I get from my env:

2024-02-20T02:53:31.195714Z  INFO log: Create raft log directory: ../no_permission/metadata    
Error: 0: Failed to start frontend, at /home/wayne/repo/greptimedb-dev/src/cmd/src/standalone.rs:400:10
1: Failed to open raft engine backend, at /home/wayne/repo/greptimedb-dev/src/frontend/src/instance.rs:176:14
2: Failed to perform raft-engine operation, at src/log-store/src/raft_engine/backend.rs:46:43
3: Io(Os { code: 13, kind: PermissionDenied, message: "Permission denied" })

@yurivict do you have a similar thing?

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Maybe there was a line "INFO log: Create raft log directory:", but it is several lines above and doesn't make it clear whether it was successful or not.

"Permission denied" should be in the same line with the file name for which permission was denied.

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"Permission denied" should be in the same line with the file name for which permission was denied.

This is impossible or even more cumbersome due to Rust's std io lib design - it wraps what errno returns without context aware.

We can instead enrich the context as in #3327 so that result is like:

Error: 0: Failed to start frontend, at /Users/tison/Brittani/greptimedb/src/cmd/src/standalone.rs:400:10
1: Failed to open raft engine backend, at /Users/tison/Brittani/greptimedb/src/frontend/src/instance.rs:176:14
2: Failed to perform IO on path: /var/root/metadata, at src/log-store/src/raft_engine/backend.rs:50:10
3: Os { code: 13, kind: PermissionDenied, message: "Permission denied" }

Not the same line, but the same stack.

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