borg/docs/man/borg-transfer.1

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.TH "BORG-TRANSFER" 1 "2022-06-26" "" "borg backup tool"
.SH NAME
borg-transfer \- archives transfer from other repository
.SH SYNOPSIS
.sp
borg [common options] transfer [options]
.SH DESCRIPTION
.sp
This command transfers archives from one repository to another repository.
.sp
Suggested use:
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.nf
.ft C
# initialize DST_REPO reusing key material from SRC_REPO, so that
# chunking and chunk id generation will work in the same way as before.
borg \-\-repo=DST_REPO init \-\-other\-repo=SRC_REPO \-\-encryption=DST_ENC

# transfer archives from SRC_REPO to DST_REPO
borg \-\-repo=DST_REPO transfer \-\-other\-repo=SRC_REPO \-\-dry\-run  # check what it would do
borg \-\-repo=DST_REPO transfer \-\-other\-repo=SRC_REPO            # do it!
borg \-\-repo=DST_REPO transfer \-\-other\-repo=SRC_REPO \-\-dry\-run  # check! anything left?
.ft P
.fi
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.sp
The default is to transfer all archives, including checkpoint archives.
.sp
You could use the misc. archive filter options to limit which archives it will
transfer, e.g. using the \-a option. This is recommended for big
repositories with multiple data sets to keep the runtime per invocation lower.
.SH OPTIONS
.sp
See \fIborg\-common(1)\fP for common options of Borg commands.
.SS optional arguments
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.TP
.B  \-n\fP,\fB  \-\-dry\-run
do not change repository, just check
.TP
.BI \-\-other\-repo \ SRC_REPOSITORY
transfer archives from the other repository
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.SS Archive filters
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.TP
.BI \-P \ PREFIX\fR,\fB \ \-\-prefix \ PREFIX
only consider archive names starting with this prefix.
.TP
.BI \-a \ GLOB\fR,\fB \ \-\-glob\-archives \ GLOB
only consider archive names matching the glob. sh: rules apply, see "borg help patterns". \fB\-\-prefix\fP and \fB\-\-glob\-archives\fP are mutually exclusive.
.TP
.BI \-\-sort\-by \ KEYS
Comma\-separated list of sorting keys; valid keys are: timestamp, name, id; default is: timestamp
.TP
.BI \-\-first \ N
consider first N archives after other filters were applied
.TP
.BI \-\-last \ N
consider last N archives after other filters were applied
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.SH EXAMPLES
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.TP
.B ::
# 0. Have borg 2.0 installed on client AND server, have a b12 repo copy for testing.
.sp
# 1. Create a new "related" repository:
# here, the existing borg 1.2 repo used repokey\-blake2 (and aes\-ctr mode),
# thus we use repokey\-blake2\-aes\-ocb for the new borg 2.0 repo.
# staying with the same chunk id algorithm (blake2) and with the same
# key material (via \-\-other\-repo <oldrepo>) will make deduplication work
# between old archives (copied with borg transfer) and future ones.
# the AEAD cipher does not matter (everything must be re\-encrypted and
# re\-authenticated anyway), you could also choose repokey\-blake2\-chacha20\-poly1305.
# in case your old borg repo did not use blake2, just remove the "\-blake2".
$ borg \-\-repo       \fI\%ssh://borg2@borgbackup/./tests/b20\fP rcreate 
.IP "System Message: ERROR/3 (docs/borg-transfer.rst:, line 88)"
Unexpected indentation.
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\-\-other\-repo \fI\%ssh://borg2@borgbackup/./tests/b12\fP \-e repokey\-blake2\-aes\-ocb
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# 2. Check what and how much it would transfer:
$ borg \-\-repo       \fI\%ssh://borg2@borgbackup/./tests/b20\fP transfer 
.IP "System Message: ERROR/3 (docs/borg-transfer.rst:, line 92)"
Unexpected indentation.
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\-\-other\-repo \fI\%ssh://borg2@borgbackup/./tests/b12\fP \-\-dry\-run
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.sp
# 3. Transfer (copy) archives from old repo into new repo (takes time and space!):
$ borg \-\-repo       \fI\%ssh://borg2@borgbackup/./tests/b20\fP transfer 
.IP "System Message: ERROR/3 (docs/borg-transfer.rst:, line 96)"
Unexpected indentation.
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\-\-other\-repo \fI\%ssh://borg2@borgbackup/./tests/b12\fP
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.sp
# 4. Check if we have everything (same as 2.):
$ borg \-\-repo       \fI\%ssh://borg2@borgbackup/./tests/b20\fP transfer 
.IP "System Message: ERROR/3 (docs/borg-transfer.rst:, line 100)"
Unexpected indentation.
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\-\-other\-repo \fI\%ssh://borg2@borgbackup/./tests/b12\fP \-\-dry\-run
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.SH SEE ALSO
.sp
\fIborg\-common(1)\fP
.SH AUTHOR
The Borg Collective
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