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149 lines
4.8 KiB
Groff
149 lines
4.8 KiB
Groff
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.TH "BORG-TRANSFER" 1 "2022-10-02" "" "borg backup tool"
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.SH NAME
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borg-transfer \- archives transfer from other repository, optionally upgrade data format
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.SH SYNOPSIS
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.sp
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borg [common options] transfer [options]
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.SH DESCRIPTION
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.sp
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This command transfers archives from one repository to another repository.
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Optionally, it can also upgrade the transferred data.
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.sp
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Suggested use for general purpose archive transfer (not repo upgrades):
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.INDENT 0.0
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.INDENT 3.5
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.sp
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.nf
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.ft C
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# create a related DST_REPO (reusing key material from SRC_REPO), so that
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# chunking and chunk id generation will work in the same way as before.
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borg \-\-repo=DST_REPO rcreate \-\-other\-repo=SRC_REPO \-\-encryption=DST_ENC
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# transfer archives from SRC_REPO to DST_REPO
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borg \-\-repo=DST_REPO transfer \-\-other\-repo=SRC_REPO \-\-dry\-run # check what it would do
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borg \-\-repo=DST_REPO transfer \-\-other\-repo=SRC_REPO # do it!
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borg \-\-repo=DST_REPO transfer \-\-other\-repo=SRC_REPO \-\-dry\-run # check! anything left?
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.ft P
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.fi
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.UNINDENT
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.UNINDENT
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.sp
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The default is to transfer all archives, including checkpoint archives.
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.sp
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You could use the misc. archive filter options to limit which archives it will
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transfer, e.g. using the \-a option. This is recommended for big
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repositories with multiple data sets to keep the runtime per invocation lower.
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.sp
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For repository upgrades (e.g. from a borg 1.2 repo to a related borg 2.0 repo), usage is
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quite similar to the above:
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.INDENT 0.0
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.INDENT 3.5
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.sp
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.nf
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.ft C
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borg \-\-repo=DST_REPO transfer \-\-other\-repo=SRC_REPO \-\-upgrader=From12To20
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.ft P
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.fi
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.UNINDENT
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.UNINDENT
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.SH OPTIONS
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.sp
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See \fIborg\-common(1)\fP for common options of Borg commands.
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.SS optional arguments
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.INDENT 0.0
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.TP
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.B \-n\fP,\fB \-\-dry\-run
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do not change repository, just check
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.TP
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.BI \-\-other\-repo \ SRC_REPOSITORY
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transfer archives from the other repository
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.TP
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.BI \-\-upgrader \ UPGRADER
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use the upgrader to convert transferred data (default: no conversion)
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.UNINDENT
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.SS Archive filters
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.INDENT 0.0
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.TP
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.BI \-a \ PATTERN\fR,\fB \ \-\-match\-archives \ PATTERN
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only consider archive names matching the pattern. see \(dqborg help match\-archives\(dq.
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.TP
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.BI \-\-sort\-by \ KEYS
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Comma\-separated list of sorting keys; valid keys are: timestamp, name, id; default is: timestamp
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.TP
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.BI \-\-first \ N
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consider first N archives after other filters were applied
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.TP
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.BI \-\-last \ N
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consider last N archives after other filters were applied
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.UNINDENT
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.SH EXAMPLES
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.INDENT 0.0
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.INDENT 3.5
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.sp
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.nf
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.ft C
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# 0. Have borg 2.0 installed on client AND server, have a b12 repo copy for testing.
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# 1. Create a new \(dqrelated\(dq repository:
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# here, the existing borg 1.2 repo used repokey\-blake2 (and aes\-ctr mode),
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# thus we use repokey\-blake2\-aes\-ocb for the new borg 2.0 repo.
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# staying with the same chunk id algorithm (blake2) and with the same
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# key material (via \-\-other\-repo <oldrepo>) will make deduplication work
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# between old archives (copied with borg transfer) and future ones.
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# the AEAD cipher does not matter (everything must be re\-encrypted and
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# re\-authenticated anyway), you could also choose repokey\-blake2\-chacha20\-poly1305.
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# in case your old borg repo did not use blake2, just remove the \(dq\-blake2\(dq.
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$ borg \-\-repo ssh://borg2@borgbackup/./tests/b20 rcreate \e
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\-\-other\-repo ssh://borg2@borgbackup/./tests/b12 \-e repokey\-blake2\-aes\-ocb
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# 2. Check what and how much it would transfer:
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$ borg \-\-repo ssh://borg2@borgbackup/./tests/b20 transfer \-\-upgrader=From12To20 \e
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\-\-other\-repo ssh://borg2@borgbackup/./tests/b12 \-\-dry\-run
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# 3. Transfer (copy) archives from old repo into new repo (takes time and space!):
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$ borg \-\-repo ssh://borg2@borgbackup/./tests/b20 transfer \-\-upgrader=From12To20 \e
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\-\-other\-repo ssh://borg2@borgbackup/./tests/b12
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# 4. Check if we have everything (same as 2.):
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$ borg \-\-repo ssh://borg2@borgbackup/./tests/b20 transfer \-\-upgrader=From12To20 \e
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\-\-other\-repo ssh://borg2@borgbackup/./tests/b12 \-\-dry\-run
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.ft P
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.fi
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.UNINDENT
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.UNINDENT
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.SH SEE ALSO
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.sp
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\fIborg\-common(1)\fP
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.SH AUTHOR
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The Borg Collective
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.\" Generated by docutils manpage writer.
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