cmd/utils: log path used when checking disk space

[kumavis]

geth may be configured to use various paths across various mounted locations with different disk space availability.
This change additionally logs the path checked when encountering low disk space.

[kumavis]

seems like geth only monitors the data-dir

go-ethereum/cmd/utils/cmd.go

Line 87 in c2e0abc

go monitorFreeDiskSpace(sigc, stack.InstanceDir(), uint64(minFreeDiskSpace)*1024*1024)

go-ethereum/node/config.go

Line 353 in c2e0abc

return filepath.Join(c.DataDir, c.name())

go-ethereum/node/config.go

Line 305 in c2e0abc

progname := strings.TrimSuffix(filepath.Base(os.Args[0]), ".exe")

[kumavis]

geth should likely monitor and warn for every path its configured to write to

[rjl493456442]

Actually Geth has two main places for writing:

• The datadir directory for most of data
• The ancient directory(it's inside of datadir by default, but can be configured to other path if requested)

We only monitor the first one, might be interesting if we do it for two.

Btw, can you elaborate why you submit this PR? Does something weird happen to you?

[holiman]

LGTM

[holiman]

We only monitor the first one, might be interesting if we do it for two.

Agree (but I think this PR is good for now)