# /hostfs/sys/fs/cgroup/io.stat: input does not match format

**URL:** <https://discuss.elastic.co/t/hostfs-sys-fs-cgroup-io-stat-input-does-not-match-format/322837>\
**Category:** Beats\
**Tags:** docker, metricbeat\
**Created:** [January 10, 2023, 12:48pm UTC](https://discuss.elastic.co/t/hostfs-sys-fs-cgroup-io-stat-input-does-not-match-format/322837 "2023-01-10T12:48:02Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![litronics](https://avatars.discourse-cdn.com/v4/letter/l/8491ac/32.png) [@litronics](https://discuss.elastic.co/u/litronics)\
**Post date:** [January 10, 2023, 12:48pm UTC](https://discuss.elastic.co/t/hostfs-sys-fs-cgroup-io-stat-input-does-not-match-format/322837/1 "2023-01-10T12:48:02Z")

</div>

Hi,

I am getting constantly the following errormessage in my metricbeat logs:

```auto
[elastic_agent.metricbeat][error] error getting cgroup stats for V2: error fetching stats for controller io: error fetching IO stats: error getting io.stats for path /hostfs/sys/fs/cgroup: error scanning file: /hostfs/sys/fs/cgroup/io.stat: input does not match format

```

Additionally I have trouble to get detailed io metrics from my docker containers using the docker integration.  
As this is the only errormessage I see in the logs, I believe that this is thightly connected to each other.

However - when I run "docker stats" I do see all the stats for each container, but elastic agent / metricbeats is not able to pick these up and deliver themt to ES.

The host system is a raspberry pi 4:

```auto
$ uname -a
Linux 5.15.76-v8+ #1597 SMP PREEMPT Fri Nov 4 12:16:41 GMT 2022 aarch64 GNU/Linux
$ cat /etc/os-release
PRETTY_NAME="Debian GNU/Linux 11 (bullseye)"
NAME="Debian GNU/Linux"
VERSION_ID="11"
VERSION="11 (bullseye)"
VERSION_CODENAME=bullseye
ID=debian

```

I also doublechecked that the required cgroup controllers mapped and enabled:

```auto
$ cat /sys/fs/cgroup/cgroup.controllers
cpuset cpu io memory pids

```

Additionally i verified that tie io.stat delivers informations:

```auto
$ cat /sys/fs/cgroup/io.stat
179:0 rbytes=1715794944 wbytes=2942546944 rios=36193 wios=353651 dbytes=0 dios=0
7:7 7:6 7:5 7:4 7:3 7:2 7:1 7:0 1:15 1:14 1:13 1:12 1:11 1:10 1:9 1:8 1:7 1:6 1:5 1:4 1:3 1:2 1:1 1:0

```

At this point I am running out of ideas what else could be wrong or missing.

Any ideas in the community?

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [February 7, 2023, 2:48pm UTC](https://discuss.elastic.co/t/hostfs-sys-fs-cgroup-io-stat-input-does-not-match-format/322837/2 "2023-02-07T14:48:35Z")

</div>

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