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local: Add flag --no-preallocate - #3207

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Some virtual filesystems (such as Google Drive File Stream) may
incorrectly set the actual file size equal to the preallocated space,
causing checksum and file size checks to fail.

This flag can be used to disable preallocation for local backends of
this type.
This commit is contained in:
David Sze
2021-01-31 15:25:24 -05:00
committed by Nick Craig-Wood
parent 92187a3b33
commit 2d7afe8690
2 changed files with 38 additions and 7 deletions
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15
docs/content/local.md
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@@ -447,6 +447,21 @@ to override the default choice.
- Type: bool
- Default: false
#### --local-no-preallocate
Disable preallocation of disk space for transferred files
Preallocation of disk space helps prevent filesystem fragmentation.
However, some virtual filesystem layers (such as Google Drive File
Stream) may incorrectly set the actual file size equal to the
preallocated space, causing checksum and file size checks to fail.
Use this flag to disable preallocation.
- Config: no_preallocate
- Env Var: RCLONE_LOCAL_NO_PREALLOCATE
- Type: bool
- Default: false
#### --local-no-sparse
Disable sparse files for multi-thread downloads