borgmatic/docs/how-to/inspect-your-backups.md

---
title: How to inspect your backups
---
## Backup progress

By default, borgmatic runs proceed silently except in the case of errors. But
if you'd like to to get additional information about the progress of the
backup as it proceeds, use the verbosity option:

```bash
borgmatic --verbosity 1
```

This lists the files that borgmatic is archiving, which are those that are new
or changed since the last backup.

Or, for even more progress and debug spew:

```bash
borgmatic --verbosity 2
```

## Backup summary

If you're less concerned with progress during a backup, and you just want to
see the summary of archive statistics at the end, you can use the stats
option when performing a backup:

```bash
borgmatic --stats
```

## Existing backups

borgmatic provides convenient actions for Borg's
[list](https://borgbackup.readthedocs.io/en/stable/usage/list.html) and
[info](https://borgbackup.readthedocs.io/en/stable/usage/info.html)
functionality:


```bash
borgmatic list
borgmatic info
```

(No borgmatic `list` or `info` actions? Try the old-style `--list` or
`--info`. Or upgrade borgmatic!)


## Logging

By default, borgmatic logs to a local syslog-compatible daemon if one is
present and borgmatic is running in a non-interactive console. Where those
logs show up depends on your particular system. If you're using systemd, try
running `journalctl -xe`. Otherwise, try viewing `/var/log/syslog` or
similiar.

You can customize the log level used for syslog logging with the
`--syslog-verbosity` flag, and this is independent from the console logging
`--verbosity` flag described above. For instance, to get additional
information about the progress of the backup as it proceeds:

```bash
borgmatic --syslog-verbosity 1
```

Or to increase syslog logging to include debug spew:

```bash
borgmatic --syslog-verbosity 2
```

### systemd journal

If your local syslog daemon is systemd's journal, be aware that journald by
default throttles the rate at which a particular program can log. So you may
need to [change the journald rate
limit](https://www.freedesktop.org/software/systemd/man/journald.conf.html#RateLimitIntervalSec=)
in `/etc/systemd/journald.conf` if you're finding that borgmatic journald logs
are missing.

Note that the [sample borgmatic systemd service
file](https://torsion.org/borgmatic/docs/how-to/set-up-backups/#systemd)
already has this rate limit disabled.

## Error alerting

When an error occurs during a backup, borgmatic can run configurable shell
commands to fire off custom error notifications or take other actions, so you
can get alerted as soon as something goes wrong. Here's a not-so-useful
example:

```yaml
hooks:
    on_error:
        - echo "Error while creating a backup or running a backup hook."
```

The `on_error` hook supports interpolating particular runtime variables into
the hook command. Here's an example that assumes you provide a separate shell
script to handle the alerting:

```yaml
hooks:
    on_error:
        - send-text-message.sh "{configuration_filename}" "{repository}"
```

In this example, when the error occurs, borgmatic interpolates a few runtime
values into the hook command: the borgmatic configuration filename, and the
path of the repository. Here's the full set of supported variables you can use
here:

 * `configuration_filename`: borgmatic configuration filename in which the
   error occurred
 * `repository`: path of the repository in which the error occurred (may be
   blank if the error occurs in a hook)
 * `error`: the error message itself
 * `output`: output of the command that failed (may be blank if an error
   occurred without running a command)

Note that borgmatic does not run `on_error` hooks if an error occurs within a
`before_everything` or `after_everything` hook. For more about hooks, see the
[borgmatic hooks
documentation](https://torsion.org/borgmatic/docs/how-to/add-preparation-and-cleanup-steps-to-backups.md),
especially the security information.


## Scripting borgmatic

To consume the output of borgmatic in other software, you can include an
optional `--json` flag with `create`, `list`, or `info` to get the output
formatted as JSON.

Note that when you specify the `--json` flag, Borg's other non-JSON output is
suppressed so as not to interfere with the captured JSON. Also note that JSON
output only shows up at the console, and not in syslog.

### Successful backups

`borgmatic list` includes support for a `--successful` flag that only lists
successful (non-checkpoint) backups. Combined with a built-in Borg flag like
`--last`, you can list the last successful backup for use in your monitoring
scripts. Here's an example combined with `--json`:

```bash
borgmatic list --successful --last 1 --json
```

Note that this particular combination will only work if you've got a single
backup "series" in your repository. If you're instead backing up, say, from
multiple different hosts into a single repository, then you'll need to get
fancier with your archive listing. See `borg list --help` for more flags.


## Related documentation

 * [Set up backups with borgmatic](https://torsion.org/borgmatic/docs/how-to/set-up-backups.md)
 * [Add preparation and cleanup steps to backups](https://torsion.org/borgmatic/docs/how-to/add-preparation-and-cleanup-steps-to-backups.md)
 * [Develop on borgmatic](https://torsion.org/borgmatic/docs/how-to/develop-on-borgmatic.md)