forked from TrueCloudLab/frostfs-node
36 lines
886 B
Go
36 lines
886 B
Go
package shard
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import (
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"errors"
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"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/shard/mode"
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)
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// errWriteCacheDisabled is returned when an operation on write-cache is performed,
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// but write-cache is disabled.
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var errWriteCacheDisabled = errors.New("write-cache is disabled")
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// FlushWriteCache moves writecache in read-only mode and flushes all data from it.
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// After the operation writecache will remain read-only mode.
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func (s *Shard) FlushWriteCache() error {
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if !s.hasWriteCache() {
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return errWriteCacheDisabled
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}
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s.m.RLock()
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defer s.m.RUnlock()
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// To write data to the blobstor we need to write to the blobstor and the metabase.
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if s.info.Mode.ReadOnly() {
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return ErrReadOnlyMode
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}
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if s.info.Mode.NoMetabase() {
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return ErrDegradedMode
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}
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if err := s.writeCache.SetMode(mode.ReadOnly); err != nil {
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return err
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}
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return s.writeCache.Flush()
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}
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