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drive: add --drive-fast-list-bug-fix to control ListR bug workaround
See: https://forum.rclone.org/t/how-to-list-empty-directories-recursively/40995/12
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@ -598,6 +598,28 @@ resource key is not needed.
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`,
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Advanced: true,
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Sensitive: true,
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}, {
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Name: "fast_list_bug_fix",
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Help: `Work around a bug in Google Drive listing.
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Normally rclone will work around a bug in Google Drive when using
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--fast-list (ListR) where the search "(A in parents) or (B in
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parents)" returns nothing sometimes. See #3114, #4289 and
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https://issuetracker.google.com/issues/149522397
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Rclone detects this by finding no items in more than one directory
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when listing and retries them as lists of individual directories.
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This means that if you have a lot of empty directories rclone will end
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up listing them all individually and this can take many more API
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calls.
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This flag allows the work-around to be disabled. This is **not**
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recommended in normal use - only if you have a particular case you are
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having trouble with like many empty directories.
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`,
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Advanced: true,
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Default: true,
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}, {
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Name: config.ConfigEncoding,
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Help: config.ConfigEncodingHelp,
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@ -672,6 +694,7 @@ type Options struct {
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SkipShortcuts bool `config:"skip_shortcuts"`
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SkipDanglingShortcuts bool `config:"skip_dangling_shortcuts"`
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ResourceKey string `config:"resource_key"`
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FastListBugFix bool `config:"fast_list_bug_fix"`
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Enc encoder.MultiEncoder `config:"encoding"`
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EnvAuth bool `config:"env_auth"`
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}
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@ -1891,7 +1914,7 @@ func (f *Fs) listRRunner(ctx context.Context, wg *sync.WaitGroup, in chan listRE
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// drive where (A in parents) or (B in parents) returns nothing
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// sometimes. See #3114, #4289 and
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// https://issuetracker.google.com/issues/149522397
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if len(dirs) > 1 && !foundItems {
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if f.opt.FastListBugFix && len(dirs) > 1 && !foundItems {
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if atomic.SwapInt32(&f.grouping, 1) != 1 {
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fs.Debugf(f, "Disabling ListR to work around bug in drive as multi listing (%d) returned no entries", len(dirs))
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}
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