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lib/storage: log a warning when the -storageDataPath has less than -storage.minFreeDiskSpaceBytes

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This should improve the debuggability of the readonly feature.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1727
This commit is contained in:
Aliaksandr Valialkin 2021-10-19 23:58:05 +03:00
parent bdfac4ff53
commit 53bb58ed2a
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1 changed files with 6 additions and 1 deletions
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7
lib/storage/storage.go
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@ -581,10 +581,15 @@ func (s *Storage) startFreeDiskSpaceWatcher() {
freeSpaceBytes := fs.MustGetFreeSpace(s.path)
if freeSpaceBytes < freeDiskSpaceLimitBytes {
// Switch the storage to readonly mode if there is no enough free space left at s.path
logger.Warnf("switching the storage at %s to read-only mode, since it has less than -storage.minFreeDiskSpaceBytes=%d of free space: %d bytes left",
s.path, freeDiskSpaceLimitBytes, freeSpaceBytes)
atomic.StoreUint32(&s.isReadOnly, 1)
return
}
atomic.StoreUint32(&s.isReadOnly, 0)
if atomic.CompareAndSwapUint32(&s.isReadOnly, 1, 0) {
logger.Warnf("enabling writing to the storage at %s, since it has more than -storage.minFreeDiskSpaceBytes=%d of free space: %d bytes left",
s.path, freeDiskSpaceLimitBytes, freeSpaceBytes)
}
}
f()
s.freeDiskSpaceWatcherWG.Add(1)