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|
#!/usr/bin/perl
# This is meant to walk me through maintenance tasks that
# can't/shouldn't happen unattended by means of Propellor and/or cron
# jobs installed by Propellor.
#
# That includes, at least:
#
# - apt upgrades of bare metal hosts (other than automatic security
# upgrades)
#
# - checking in and backing up homedirs, which I need to do on all
# machines, not just those for which I am root
#
# - cleaning up temporary files, old packages etc.
#
# - backups to devices usually kept offline
#
# Assumptions we make:
#
# - We expect a bunch of perl libraries and utilities to be installed.
#
# - We rely on my myrepos-based homedir infrastructure.
#
# - Each offline backup drive I use has a unique filesystem label.
# This means that exactly one drive will ever be mounted to
# /media/$USER/$foo on a given machine.
#
# Other notes:
#
# - If this script dies, it should be possible to just run it again
# from the beginning. I.e. it should be idempotent.
use strict;
use warnings;
use lib "$ENV{HOME}/src/dotfiles/perl5";
no warnings "experimental::smartmatch";
use Dpkg::Version;
use Term::UI;
use File::Which;
use File::Slurp;
use ShellSequence;
use ScriptStatus;
use File::Grep "fgrep";
use File::Basename;
use File::chdir;
use Capture::Tiny qw/capture_merged capture/;
use List::MoreUtils "apply";
use File::Spec::Functions "rel2abs";
use Switch;
use Sys::Hostname;
use Sys::Hostname::Long;
# ---- globals
my $seq = ShellSequence->new();
my $term = Term::ReadLine->new('brand');
my $user = $ENV{LOGNAME} || $ENV{USER} || getpwuid($<);
my $host = hostname;
my $longhost = hostname_long;
# ---- config
# where are our git repos? a host defined in ~/.ssh/config
our $git_host = "athena";
# on the $git_host, where are our repositories?
our $git = "/srv/git/repositories";
# on the $git_host, where are our git-remote-gcrypt repos?
# (we have them in a separate dir because we use exclusively gcrypt's
# rsync mode. otherwise, if mixed in with regular git repos, gcrypt
# has a --check option)
our $gcrypt = "/srv/gcrypt";
# annexes that should be inited on backup drives, and synced with the
# corresponding annex in $HOME. This list is manually maintained
# because I do not want this script to run `git annex init` in lots of
# repos, creating bogus UUIDs
my @annexes = qw/annex.git wikiannex.git dionysus.git/;
# hosts configuration
#
# This config is meant to set the contents of some variables, the
# default values and meanings of which are:
#
# - $can_sudo = 0; whether we can become root using sudo(1) on this host
#
# - $can_push = 0; whether we can push any of our git repos in $HOME to
# their origin remotes (if can push some, set to '1'
# and use .mrconfig to avoid trying to push the others)
#
# - $check_for_extdrive = 0; whether we should expect to have an
# external drive plugged in and referenced on the
# command line
#
# - $can_run_duply = 0; whether there exists duply config we can run to
# backup the homedir after syncing it
# TODO factor out 'sudo' hardcoded throughout script; don't pass if it
# we are already root
our $can_sudo = 0;
our $can_push = 1;
our $check_for_extdrive = 0;
our $can_run_duply = 0;
switch ("$user\@$longhost") {
case /^root@/ { $can_sudo = 1; $can_push = 0; last }
case /\.silentflame\.com$/ { $can_sudo = 1; $can_push = 1; next }
case /\@develacc.*\.silentflame\.com$/ { $can_push = 0; next }
case /iris\.silentflame\.com$/ { $check_for_extdrive = $can_run_duply = 1; next }
case /hephaestus\.silentflame\.com$/ { $check_for_extdrive = $can_run_duply = 1; next }
case /zephyr\.silentflame\.com$/ { $check_for_extdrive = $can_run_duply = 1; next }
}
# ---- prep
chdir $ENV{HOME};
my ($loc, $drive_name, $short_drive_name);
my @ARGV_positional = grep { $_ !~ m/^--/ } @ARGV;
my @ARGV_options = grep { $_ =~ m/^--/ } @ARGV;
if (@ARGV_positional) {
$loc = rel2abs(shift @ARGV_positional);
$drive_name = $loc;
$short_drive_name = basename $drive_name;
my @mountpoints = split /^/, `mount | cut -d' ' -f3`;
@mountpoints = apply { $_ =~ s/^\s+|\s+$//g } @mountpoints;
# if it's not mounted, see if we can get it mounted
# gvfs-mount(1) is a possible alternative to using udisksctl directly
system "udisksctl mount --object-path $loc" unless ( -d $loc );
die "$loc is not a directory" unless ( -d $loc );
die "$drive_name is not a removable drive" unless ( $drive_name ~~ @mountpoints );
if ( ! -d "$loc/gitbk" ) {
status "it looks like you haven't backed up to this media before";
my $create = $term->ask_yn(prompt => "Create a new backup repository at $loc/gitbk?");
if ($create) {
mkdir "$loc/gitbk"
or die "couldn't create $loc/gitbk -- check permissions";
} else {
exit 1;
}
}
} elsif ($check_for_extdrive) {
status "you didn't specify a drive to perform a coldbkup to as a command";
status "line argument to this script";
exit unless $term->ask_yn(
prompt => "Continue sysmaint without coldbkup?",
default => 'y',
);
}
User:
goto System if ("--skip-user" ~~ @ARGV_options
|| "--only-system" ~~ @ARGV_options);
# ---- pre-backup cleanup tasks
$seq->should_zero("ls tmp");
$seq->should_succeed("src-register-all");
status "cleaning up ~/src";
clean_orig_tars();
unlink glob "src/*.dsc";
unlink glob "src/*.diff.gz";
unlink glob "src/*.upload";
unlink glob "src/*.inmulti";
unlink glob "src/*.changes";
unlink glob "src/*.deb";
unlink glob "src/*.build";
unlink glob "src/*.buildinfo";
unlink glob "src/*.debian.tar.*";
unlink glob "src/*[0-9~].tar.*"; # native package generated tarballs
system "clean-patch-queues -y";
while (42) {
my $output = capture_merged { find_dirty_src() };
if (length $output) {
status "the following files/repos in ~/src should be cleaned up:";
print $output;
my $again = $term->ask_yn(
prompt => "Check for files in ~/src again?",
default => 'y',
);
last unless $again;
} else {
last;
}
}
# files not included in duplicity backups
$seq->should_succeed("ls local/big");
# files I don't want to check into git but small enough to include in
# duplicity backups, but should not stick around in ~/tmp
$seq->should_succeed("ls local/tmp");
# files to be temporarily shared over the LAN
$seq->should_succeed("ls local/pub");
$term->get_reply(
prompt => "Consider cleaning up/annexing files in these three dirs.",
default => 'okay',
);
$seq->should_succeed("ls");
$term->get_reply(
prompt => "Clean up any loose files in ~",
default => 'done',
);
# ---- standard backup procedure
# run a restow to catch if we need to run `mr adopt`
$seq->add_should_succeed("mr -ms restow");
$seq->add_should_succeed("mr -ms autoci");
# `mr -ms isclean` checks for stuff to be checked in ...
$seq->add_should_succeed("mr -ms isclean");
$seq->add_should_succeed("mr -s up");
$can_push and $seq->add_should_succeed("mr -s push");
# ... then `mr -ms status` finds unpushed branches & stashes
$seq->add_should_zero("mr -ms status");
$seq->run();
# ---- backup to offline media ("coldbkup" was old script name)
# TODO error handling here: since we're not using $seq for everything
if ( defined $loc ) {
# ---- github-backup
# handed over to a cronjob on athena
# {
# mkdir "$loc/gitbk/github" unless ( -d "$loc/gitbk/github" );
# local $CWD = "$loc/gitbk/github";
# # TODO should login to github API to work around rate limiting
# $seq->add_should_succeed("github-backup spwhitton");
# $seq->run();
# }
# ---- starred repos on GitHub
# I used to use github-backup for this but the GitHub API rate
# limiting seemed to mean that it was never able to complete the
# backup, even after logging in with OAUTH. See old propellor
# config for that in ~/doc/howm/2017/old_propellor_config.org
if ( eval "use Net::GitHub; 1" ) {
my $gh = Net::GitHub->new(version => 3);
my $starred = $gh->query('/users/spwhitton/starred');
foreach my $repo ( @$starred ) {
my $org = $repo->{full_name} =~ s|/.*$||r;
# TODO have backup_repo support 'github/$org' i.e. handle
# creating subdirectories, which it can't do yet. And
# then clean up github_*/ and github/foo where
# github/foo/.git exists (i.e. clean up stuff done by old
# versions of sysmaint)
backup_repo($repo->{clone_url}, "github_$org");
}
}
# ---- athena repos
my $athena_git_repos = capture {
system "ssh athena 'for d in $git/*.git $git/*/*.git; do echo \$d; done'";
};
my $athena_gcrypt_repos = capture {
system "ssh athena 'for d in $gcrypt/*; do echo \$d; done'";
};
my @athena_git_repos = split /^/, $athena_git_repos;
@athena_git_repos = apply { s|$git/|| } @athena_git_repos;
my @athena_gcrypt_repos = split /^/, $athena_gcrypt_repos;
@athena_gcrypt_repos = apply { s|$gcrypt/|| } @athena_gcrypt_repos;
foreach my $repo ( @athena_git_repos ) {
$repo =~ s/\n//g;
backup_repo("git\@spwhitton.name:$repo", "athena");
}
foreach my $repo ( @athena_gcrypt_repos ) {
$repo =~ s/\n//g;
backup_repo("gcrypt::rsync://athena:/srv/gcrypt/$repo", "athena_gcrypt");
}
# ---- misc. repos
# Debian packages I'm responsible for, and a few other Debian repos
# TODO move this into text files in ~/doc/conf/
backup_repo("https://salsa.debian.org/emacsen-team/dh-elpa", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/yasnippet", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/emacs-async", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/emacs-highlight-indentation", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/emacs-noflet", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/f-el", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/flx", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/flycheck", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/let-alist", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/paredit-el", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/parsebib", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/perspective-el", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/pkg-info-el", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/popup-el", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/projectile", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/persp-projectile", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/helm-projectile", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/rainbow-delimiters", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/seq-el", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/s-el", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/dash-functional-el", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/shut-up", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/smex", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/ws-butler", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/zenburn-emacs", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/aggressive-indent-mode", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/ert-async-el", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/git-annex-el", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/debpaste-el", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/magit-annex", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/xml-rpc-el", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/wc-mode", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/key-chord-el", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/paredit-everywhere", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/visual-regexp-el", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/pointback", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/emacs-openwith", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/emacs-world-time-mode", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/helm-dash", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/message-templ", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/esxml", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/emacs-db", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/emacs-kv", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/emacs-helm-ag", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/queue-el", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/spinner-el", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/cider", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/helm", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/epl", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/deft", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/ebib", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/dh-make-elpa", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/nov-el", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/yasnippet-snippets", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/emacs-buttercup", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/dash-el", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/redtick", "salsa");
backup_repo("https://salsa.debian.org/emacsen-team/wiki", "salsa", "pkg-emacsen");
backup_repo("https://salsa.debian.org/emacsen-team/sesman", "salsa", "pkg-emacsen");
backup_repo("https://salsa.debian.org/haskell-team/git-annex", "salsa");
backup_repo("https://salsa.debian.org/python-team/modules/pikepdf", "salsa");
backup_repo("https://salsa.debian.org/python-team/modules/pytest-helpers-namespace", "salsa");
backup_repo("https://salsa.debian.org/dbnpolicy/policy", "salsa");
}
# attempt to unmount the drive we just backed up to
if ( defined $loc ) {
# gvfs-mount(1) is a possible alternative to using udisksctl directly
$seq->add_should_succeed("udisksctl unmount --object-path $loc");
$seq->add_should_succeed("udisksctl power-off --object-path $loc");
}
# ---- update duplicity backups now that all syncing is done
# TODO How about turning off MAX_FULLBKP_AGE such that only sysmaint
# performs a full backup? This eliminates the random coffee shop WiFi
# problem. Document that we're using that strategy, for laptops only,
# in the duplicity config file.
#
# (in locmaint, we're achieving this by forcing incremental backups
# rather than turning off MAX_FULLBKP_AGE, so that the 'backup'
# subcommand still respects MAX_FULLBKP_AGE as that might useful)
if ( $can_run_duply ) {
$seq->add_should_succeed("duply $host-$user-home backup");
}
$seq->run();
# ---- local system maintenance
System:
exit unless $can_sudo;
exit if ("--skip-system" ~~ @ARGV_options);
exit if ("--only-user" ~~ @ARGV_options);
unless ("--only-system" ~~ @ARGV_options || "--skip-user" ~~ @ARGV_options) {
exit unless $term->ask_yn(
prompt =>
"Backups complete. Perform local system maintainance?"
);
}
$seq->should_succeed("df -h");
$term->get_reply(
prompt => "Confirm that host has enough disc space, or clean up some files.",
default => 'done',
);
if ($longhost eq "athena.silentflame.com") {
$seq->should_succeed("uptime");
$term->get_reply(
prompt => "If athena was rebooted, perform athena reboot procedure.",
default => 'done',
);
}
# clean packages installed by mk-build-deps(1)
my $build_deps_to_be_purged = `dpkg -l | awk '/-build-deps/ { print \$1 " " \$2 " " \$3}'`;
if ($build_deps_to_be_purged) {
print $build_deps_to_be_purged;
$seq->should_succeed("sudo aptitude -y purge '~n-build-deps\$'")
if $term->ask_yn(
prompt => "Finished with these?",
default => 'n',
);
}
$seq->add_should_succeed("sudo apt-get update");
# This is equivalent to `apt upgrade` (at the time of writing) and has
# the advantage over plain `apt-get upgrade` that new Recommends won't
# be missed, which is possible with plain `apt-get upgrade`.
# (Arguably plain `apt-get upgrade` should never be used and its
# semantics were a poor design choice.)
$seq->add_should_succeed("sudo apt-get --with-new-pkgs upgrade");
$seq->add_should_succeed("sudo apt-get dist-upgrade");
$seq->add_should_succeed("sudo apt-get -y autoremove");
$seq->add_should_succeed("sudo apt-get autoclean");
# TODO check if mailq is executable by us or skip this
which 'mailq' and $seq->add_should_zero("mailq | grep -v 'Mail queue is empty'");
$seq->run();
# additional system cleanup tasks
my $to_be_purged = `dpkg -l | awk '/^rc/ { print \$1 " " \$2 }'`;
if ($to_be_purged) {
print $to_be_purged;
$seq->should_succeed("sudo apt-get purge \$(dpkg -l | awk '/^rc/ { print \$2 }')")
if $term->ask_yn(
prompt => "Purge these?"
);
}
# TODO only try to do this on Debian stable hosts, because often the
# running kernel will be an obsolete package on testing/unstable, and
# in general we can only expect this to work well on stable
#
# (but we probably want to clean up obsolete packages on testing/sid
# as they will build up. so just add code here to filter out the
# running kernel?)
#
# (even then probably don't run it on testing because packages
# disappear and reappear. but we can expect this to work reliably on
# sid, I think)
my $obsolete = `aptitude search ?obsolete`;
if ($obsolete) {
print $obsolete;
$seq->should_succeed("sudo aptitude -y purge ?obsolete")
if $term->ask_yn(
prompt =>
"Remove these packages, which are no longer available from any mirrors?",
default => 'n',
);
}
my $obsolete_rc = `dpkg-query -W '-f=\${Package}\\n\${Conffiles}\\n' | awk '/^[^ ]/{pkg=\$1}/ obsolete\$/{print pkg,\$0}'`;
if ($obsolete_rc) {
print $obsolete_rc;
my $fix = $term->ask_yn(
prompt =>
"Fix these obsolete conffiles by deleting them, and reinstalling the packages providing them?",
);
if ($fix) {
for my $line (split '\n', $obsolete_rc) {
my ($pkg, $rc) = split ' ', $line;
# print "would delete: $rc\n";
# print "would reinstall: $pkg\n";
$seq->add_should_succeed("sudo rm $rc");
$seq->add_should_succeed("sudo apt-get install --reinstall $pkg");
$seq->run();
}
}
}
my $debian_version = read_file("/etc/debian_version");
chomp $debian_version;
if ($debian_version =~ m|/sid$| || -e "/var/run/reboot-required") {
$seq->should_succeed("sudo reboot")
if $term->ask_yn(
prompt => "Should reboot; do it now?",
default => 'n',
);
}
# ---- subroutines
sub clean_orig_tars {
my $origs = {};
foreach my $f ( glob "src/*.orig.tar.*" ) {
$f =~ m/src\/([^_]*)_/;
push @{$origs->{"$1"}}, $f;
}
sub orig_ver {
$a =~ m/src\/[^_]*_([^_]*)\.orig/;
my $ver_a = Dpkg::Version->new("$1");
$b =~ m/src\/[^_]*_([^_]*)\.orig/;
my $ver_b = Dpkg::Version->new("$1");
version_compare($ver_a, $ver_b);
}
foreach my $pkg (keys %$origs) {
my @origs = sort orig_ver @{$origs->{$pkg}};
if ( -d "src/$pkg/.git" ) {
if ( scalar @origs > 2 ) {
@origs = splice @origs, 0, -2;
} else {
@origs = ();
}
}
foreach my $orig ( @origs ) {
unlink $orig;
}
}
}
sub find_dirty_src {
foreach my $f ( glob "src/*" ) {
my $short = basename($f);
unless ( (-f $f && $f =~ /orig\.tar/)
# also permit symlinks to orig tarballs
|| (-l $f && $f =~ /orig\.tar/)
# also permit gbp orig tarballs
|| ($f =~ /orig\.gbp\.tar/)
|| -d "$f/.git" || -d "$f/.hg" # handled by src-register-all
) {
print "$f\n";
}
}
}
sub backup_repo {
my ( $long, $dest, $rename ) = @_;
my $short;
# flush the command sequencer
$seq->run();
# third param is optional: do we need to rename it because
# remote's name is too generic (e.g. 'wiki')?
if ( defined $rename ) {
$short = $rename;
} else {
if ( $long =~ m/^http/ ) {
( undef, $short ) = split /\/([^\/]+)$/, $long;
} else {
( undef, $short ) = split /:([^:]+)$/, $long;
}
$short =~ s/\/srv\/(git|gcrypt)\///;
}
$short = "$short.git" unless $short =~ /\.git$/;
my $vshort = basename $short;
$dest = "$loc/gitbk/$dest";
my $dir = "$dest/$short";
status "backup source: $long";
status "backup dest: $dir";
# first we have to determine whether it's an annex, as that will
# affect the commands we run both to clone and to update
my $annex = 0;
if ( $dest eq "$loc/gitbk/athena" && $vshort ~~ @annexes ) {
$annex = 1;
}
if ( -e $dir ) { # repo already backed up to this drive
local $CWD = $dir;
# TODO second disjunct in to allow for non-bare repos on
# backup drive, e.g. gitbk/athena/annex on m3. At present,
# gitbk/athena/annex.git is a symlink to gitbk/athena/annex.
# We should be able to handle this without the symlink, in
# this script
if ( -d "annex" || -d ".git/annex" ) {
system "git config annex.diskreserve '2GB'";
# TODO ask user before pairing since it's a guess
if ( my $host_repo = find_host_annex($vshort) ) {
status "pairing $short with $host_repo";
local $CWD = $host_repo;
system "git remote add $short_drive_name $dir 2>/dev/null" || 1;
$seq->should_succeed("git annex sync --content $short_drive_name");
# TODO now metadata sync with origin remote, if it exists
} else {
# TODO extend ShellSequence to run arbitrary perl,
# then this whole thing can be retried
status "couldn't pair $short with host; not syncing it";
my $acknowledged = $term->ask_yn(
prompt => "Acknowledged?",
default => 'y',
);
}
} else {
# TODO verify origin remote is what we expect, or error
# out: user probably needs to update backup drive layout
$seq->should_succeed("git fetch origin '+refs/heads/*:refs/heads/*' --tags --no-prune");
}
} else { # repo new to this drive
if ($annex) {
mkdir "$dest" unless ( -d $dest );
local $CWD = $dest;
# bare repos don't get a reflog by default
system "git -c core.logAllRefUpdates=true clone --bare $long $short";
{
local $CWD = $dir;
system "git annex init '$short_drive_name'";
system "git config annex.diskreserve '2GB'";
# only set preferred content settings on a first init,
# so that the user can override for this particular
# backup drive
system "git annex wanted . standard";
system "git annex group . incrementalbackup";
# TODO ask user before pairing since it's a guess
if ( my $host_repo = find_host_annex($vshort) ) {
status "pairing $short with $host_repo";
local $CWD = $host_repo;
system "git remote add $short_drive_name $dir 2>/dev/null" || 1;
$seq->should_succeed("git annex sync --content $short_drive_name");
# TODO now metadata sync with origin remote, if it exists
} else {
status "couldn't pair $short with host; not syncing it";
my $acknowledged = $term->ask_yn(
prompt => "Acknowledged?",
default => 'y',
);
}
}
} else {
mkdir "$dest" unless ( -d $dest );
local $CWD = $dest;
# bare repos don't get a reflog by default
$seq->should_succeed("git -c core.logAllRefUpdates=true clone --mirror $long $short");
}
}
# Protect our backup from being reaped by git-gc
{
local $CWD = $dir;
# Enable the reflog, since it is off by default in bare repos.
# Since we fetch with --no-prune, no reflogs will ever get
# deleted, so we have one for every branch that ever existed
# in the remote we're backing up (that existed at a time we
# ran this script, at least)
system "git config core.logAllRefUpdates true";
# Never remove reflog entries
system "git config gc.reflogExpire never";
# git-gc will never remove dangling commits mentioned in any
# reflog *unless* they are unreachable in the branch the
# reflog logs and are older than this config variable
system "git config gc.reflogExpireUnreachable never";
# avoid backing up broken commits
system "git config fetch.fsckObjects true";
}
}
sub find_host_annex {
my $annex = shift;
$annex =~ s|\.git$||;
# parse output of `mr list`
my @my_repos = split /^/, `mr -d $ENV{HOME} list`;
@my_repos = apply { s/mr list:// } @my_repos;
@my_repos = apply { $_ =~ s/^\s+|\s+$//g } @my_repos;
@my_repos = grep { /^\// } @my_repos;
# TODO check if they have any commits in common
my @found = grep { $_ =~ /\/$annex$/ } @my_repos;
return $found[0] if ( scalar @found == 1 );
}
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