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s3: add --s3-no-check-bucket for minimising rclone transactions and perms

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Fixes #4449
This commit is contained in:
Nick Craig-Wood 2020-07-22 12:02:17 +01:00
parent 3b2322285a
commit f406dbbb4d
1 changed files with 13 additions and 0 deletions
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13
backend/s3/s3.go
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@ -923,6 +923,15 @@ In Ceph, this can be increased with the "rgw list buckets max chunk" option.
`,
Default: 1000,
Advanced: true,
}, {
Name: "no_check_bucket",
Help: `If set don't attempt to check the bucket exists or create it
This can be useful when trying to minimise the number of transactions
rclone does if you know the bucket exists already.
`,
Default: false,
Advanced: true,
}, {
Name: config.ConfigEncoding,
Help: config.ConfigEncodingHelp,
@ -1001,6 +1010,7 @@ type Options struct {
UseAccelerateEndpoint bool `config:"use_accelerate_endpoint"`
LeavePartsOnError bool `config:"leave_parts_on_error"`
ListChunk int64 `config:"list_chunk"`
NoCheckBucket bool `config:"no_check_bucket"`
Enc encoder.MultiEncoder `config:"encoding"`
MemoryPoolFlushTime fs.Duration `config:"memory_pool_flush_time"`
MemoryPoolUseMmap bool `config:"memory_pool_use_mmap"`
@ -1786,6 +1796,9 @@ func (f *Fs) Mkdir(ctx context.Context, dir string) error {
// makeBucket creates the bucket if it doesn't exist
func (f *Fs) makeBucket(ctx context.Context, bucket string) error {
if f.opt.NoCheckBucket {
return nil
}
return f.cache.Create(bucket, func() error {
req := s3.CreateBucketInput{
Bucket: &bucket,