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104 lines
3.5 KiB
Markdown
104 lines
3.5 KiB
Markdown
---
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title: "FAQ"
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description: "Rclone Frequently Asked Questions"
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date: "2015-08-27"
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---
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Frequently Asked Questions
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--------------------------
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### Do all cloud storage systems support all rclone commands ###
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Yes they do. All the rclone commands (eg `sync`, `copy` etc) will
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work on all the remote storage systems.
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### Can I copy the config from one machine to another ###
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Sure! Rclone stores all of its config in a single file. If you want
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to find this file, the simplest way is to run `rclone -h` and look at
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the help for the `--config` flag which will tell you where it is. Eg,
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```
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$ rclone -h
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Sync files and directories to and from local and remote object stores - v1.18.
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[snip]
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Options:
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--bwlimit=0: Bandwidth limit in kBytes/s, or use suffix k|M|G
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--checkers=8: Number of checkers to run in parallel.
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-c, --checksum=false: Skip based on checksum & size, not mod-time & size
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--config="/home/user/.rclone.conf": Config file.
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[snip]
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```
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So in this config the config file can be found in
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`/home/user/.rclone.conf`.
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Just copy that to the equivalent place in the destination (run `rclone
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-h` above again on the destination machine if not sure).
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### Can rclone sync directly from drive to s3 ###
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Rclone can sync between two remote cloud storage systems just fine.
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Note that it effectively downloads the file and uploads it again, so
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the node running rclone would need to have lots of bandwidth.
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The syncs would be incremental (on a file by file basis).
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Eg
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rclone sync drive:Folder s3:bucket
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### Using rclone from multiple locations at the same time ###
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You can use rclone from multiple places at the same time if you choose
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different subdirectory for the output, eg
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```
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Server A> rclone sync /tmp/whatever remote:ServerA
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Server B> rclone sync /tmp/whatever remote:ServerB
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```
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If you sync to the same directory then you should use rclone copy
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otherwise the two rclones may delete each others files, eg
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```
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Server A> rclone copy /tmp/whatever remote:Backup
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Server B> rclone copy /tmp/whatever remote:Backup
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```
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The file names you upload from Server A and Server B should be
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different in this case, otherwise some file systems (eg Drive) may
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make duplicates.
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### Why doesn't rclone support partial transfers / binary diffs like rsync? ###
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Rclone stores each file you transfer as a native object on the remote
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cloud storage system. This means that you can see the files you
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upload as expected using alternative access methods (eg using the
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Google Drive web interface). There is a 1:1 mapping between files on
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your hard disk and objects created in the cloud storage system.
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Cloud storage systems (at least none I've come across yet) don't
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support partially uploading an object. You can't take an existing
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object, and change some bytes in the middle of it.
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It would be possible to make a sync system which stored binary diffs
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instead of whole objects like rclone does, but that would break the
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1:1 mapping of files on your hard disk to objects in the remote cloud
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storage system.
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All the cloud storage systems support partial downloads of content, so
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it would be possible to make partial downloads work. However to make
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this work efficiently this would require storing a significant amount
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of metadata, which breaks the desired 1:1 mapping of files to objects.
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### Can rclone do bi-directional sync? ###
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No, not at present. rclone only does uni-directional sync from A ->
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B. It may do in the future though since it has all the primitives - it
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just requires writing the algorithm to do it.
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