Hi there.

Using BackupPC since v2, I used to be able to BackupPC the host itself (the one running BackupPC) using rsync by simply modifying $Conf{RsyncClientCmd} (to something like '/usr/bin/sudo $rsyncPath $argList', and same for $Conf{RsyncClientRestoreCmd}). THis worked with BackupPC v3 too.

How can the same be done with BackupPC v4 now that RsyncClientCmd isn't used anymore ? Setting RsyncSshArgs to undef does't work as it'll try to run with ssh (but without a full path), eg

[root@gerard ~]# sudo -u backuppc /usr/share/BackupPC/bin/BackupPC_dump -f -vv gerard
Backup type: type = full, needs_full = , needs_incr = 1, lastFullTime = 1495674113, opts{f} = 1, opts{i} = , opts{F} =
cmdSystemOrEval: about to system /bin/ping -c 1 -w 3 localhost
cmdSystemOrEval: about to system /bin/ping -c 1 -w 3 localhost
CheckHostAlive: ran '/bin/ping -c 1 -w 3 localhost'; returning 0.013
XferLOG file /var/lib/BackupPC//pc/gerard/XferLOG.190.z created 2017-06-15 10:22:29
Backup prep: type = full, case = 6, inPlace = 1, doDuplicate = 0, newBkupNum = 190, newBkupIdx = 35, lastBkupNum = , lastBkupIdx =  (FillCycle = 0, noFillCnt = 20)
__bpc_progress_state__ backup /
Running: /usr/bin/rsync_bpc --bpc-top-dir /var/lib/BackupPC/ --bpc-host-name gerard --bpc-share-name / --bpc-bkup-num 190 --bpc-bkup-comp 3 --bpc-bkup-prevnum -1 --bpc-bkup-prevcomp -1 --bpc-bkup-inode0 1 --bpc-
attrib-new --bpc-log-level 1 --rsync-path=/usr/bin/rsync --super --recursive --protect-args --numeric-ids --perms --owner --group -D --times --links --hard-links --delete --delete-excluded --partial --log-format
=log:\ %o\ %i\ %B\ %8U,%8G\ %9l\ %f%L --stats --checksum --timeout=72000 --exclude=/dev --exclude=/proc --exclude=/sys --exclude=\*lost+found --exclude=/mnt/\* --exclude=/media/\* --exclude=/tmp --exclude=/var/t
mp --exclude=/var/lib/libvirt/backup --exclude=/var/lib/BackupPC --exclude=/var/lib/libvirt/images --exclude=/var/lib/libvirt/iso --exclude=/var/lib/libvirt/qemu --exclude=/var/run --exclude=/selinux --exclude=/
var/lib/yum/yumdb/ --exclude=/cgroup/ --exclude=/var/lock/lvm/ localhost:/ /
full backup started for directory /
started full dump, share=/
Xfer PIDs are now 16424
xferPids 16424  
This is the rsync child about to exec /usr/bin/rsync_bpc
cmdExecOrEval: about to exec /usr/bin/rsync_bpc --bpc-top-dir /var/lib/BackupPC/ --bpc-host-name gerard --bpc-share-name / --bpc-bkup-num 190 --bpc-bkup-comp 3 --bpc-bkup-prevnum -1 --bpc-bkup-prevcomp -1 --bpc-bkup-inode0 1 --bpc-attrib-new --bpc-log-level 1 --rsync-path=/usr/bin/rsync --super --recursive --protect-args --numeric-ids --perms --owner --group -D --times --links --hard-links --delete --delete-excluded --partial --log-format=log:\ %o\ %i\ %B\ %8U,%8G\ %9l\ %f%L --stats --checksum --timeout=72000 --exclude=/dev --exclude=/proc --exclude=/sys --exclude=\*lost+found --exclude=/mnt/\* --exclude=/media/\* --exclude=/tmp --exclude=/var/tmp --exclude=/var/lib/libvirt/backup --exclude=/var/lib/BackupPC --exclude=/var/lib/libvirt/images --exclude=/var/lib/libvirt/iso --exclude=/var/lib/libvirt/qemu --exclude=/var/run --exclude=/selinux --exclude=/var/lib/yum/yumdb/ --exclude=/cgroup/ --exclude=/var/lock/lvm/ localhost:/ /
rsync_bpc: Failed to exec ssh: No such file or directory (2)
Done: 0 errors, 0 filesExist, 0 sizeExist, 0 sizeExistComp, 0 filesTotal, 0 sizeTotal, 0 filesNew, 0 sizeNew, 0 sizeNewComp, 1 inode
rsync error: error in IPC code (code 14) at pipe.c(84) [Receiver=3.0.9.8]

Running:

- CentOS 6

- BackupPC v4.1.3

- rsync-bpc 3.0.9.8

- BackupPC::XS 0.56