After some I/O errors the backup is stopped and deleted

[monojk]

My initial raspiBackup using rsync on rp3b with an NFS target dir served by rp4b ran for some hours, encountered once in a while I/O errors and then stopped after a day and removed the incomplete. How can I keep an incomplete backup, probably to retry and fill the missing parts?

pi@rp3b:~ $ time sudo raspiBackup
--- RBK0009I: rp3b: raspiBackup.sh V0.6.9.1 - 2024-06-17 (77f6bf8) started at Sun 15 Sep 13:35:39 CEST 2024.
--- RBK0151I: Using backuppath /raspiBackupDir with partition type nfs4.
--- RBK0044I: Creating backup of boot partition in /raspiBackupDir/rp3b/rp3b-rsync-backup-20240915-133537/rp3b-backup.img.
--- RBK0158I: Creating native rsync backup "/raspiBackupDir/rp3b/rp3b-rsync-backup-20240915-133537".
--- RBK0085I: Backup of type rsync started. Please be patient.
rsync: [sender] readlink_stat("/home/pi/.cache/gvfs") failed: Permission denied (13)
IO error encountered -- skipping file deletion
rsync: [receiver] failed to set times on "/raspiBackupDir/rp3b/rp3b-rsync-backup-20240915-133537/usr/lib/aarch64-linux-gnu/perl-base/unicore/lib/WB/.MB.pl.JupTml": Input/output error (5)
rsync: [receiver] rename "/raspiBackupDir/rp3b/rp3b-rsync-backup-20240915-133537/usr/lib/python3/dist-packages/PyQt5/.QtDBus.pyi.XPnmgV" -> "usr/lib/python3/dist-packages/PyQt5/QtDBus.pyi": Input/output error (5)
rsync: [receiver] failed to set permissions on "/raspiBackupDir/rp3b/rp3b-rsync-backup-20240915-133537/usr/lib/python3/dist-packages/mypyc/codegen/.emitclass.py.EziHGy": Input/output error (5)
rsync: [generator] recv_generator: failed to stat "/raspiBackupDir/rp3b/rp3b-rsync-backup-20240915-133537/usr/lib/python3/dist-packages/pylint/checkers/base/name_checker/checker.py": Input/output error (5)
rsync: [receiver] rename "/raspiBackupDir/rp3b/rp3b-rsync-backup-20240915-133537/usr/lib/python3/dist-packages/psutil/tests/.__init__.py.Sy2RIo" -> "usr/lib/python3/dist-packages/psutil/tests/__init__.py": Input/output error (5)
rsync: [receiver] failed to set permissions on "/raspiBackupDir/rp3b/rp3b-rsync-backup-20240915-133537/usr/sbin/.blkmapd.gZUQgd": Input/output error (5)
rsync: [receiver] rename "/raspiBackupDir/rp3b/rp3b-rsync-backup-20240915-133537/var/lib/dpkg/info/.python3-pexpect.prerm.yazFgd" -> "var/lib/dpkg/info/python3-pexpect.prerm": Input/output error (5)
rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1338) [sender=3.2.7]
??? RBK0021E: Backupprogram for type rsync failed with RC 23.
--- RBK0033I: Please wait until cleanup has finished.
--- RBK0043I: Removing incomplete backup in /raspiBackupDir/rp3b/rp3b-rsync-backup-20240915-133537. This may take some time. Please be patient.

[framps]

The root cause for the IO error is an unstable NFS connection. I suggest to make the connection stable to get a complete backup which then will not been deleted.

There is an undocumented option available to ignore RC23 and keep the backup even it's incomplete but I don't give any support if this option is used.

[monojk]

What is the option to ignore RC23? As an alternative I lean towards making a backup of the user space and /etc only. It's because the failed backup plus remove of the backup took real 1773m31.396s almost 30 hours over NFS.

Can a directory based backup be made with raspiBackup?

[framps]

What is the option to ignore RC23?

export RSYNC_IGNORE_ERRORS="23"

But again: I don't suggest to use this option. You can never trust the backup is complete.

almost 30 hours over NFS.

Keep in mind the first rsync backup is a full backup. All following backups are incremental backups and will be faster. But you also should tune your nfs settings.

Can a directory based backup be made with raspiBackup?

No. raspiBackup was designed to create a complete system backup.

[monojk]

ok

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