abhisheksurve45 opened a new issue #8193:
URL: https://github.com/apache/trafficserver/issues/8193
## Issue Report
#### Describe the issue
Hi team,
We have installed Traffic Server from the source code and have been trying
to resolve the regex operation failure issue that we are facing
```
[ET_NET 2] WARNING: failed operation: READ (opcode=1), span:
/var/cache/trafficserver/cache.db (fd=20)
[ET_NET 2] WARNING: Error accessing Disk /var/cache/trafficserver/cache.db
[4/5]
[ET_AIO 7:20] WARNING: cache disk operation failed READ -1 22
```
After 5 successive failures, it marks the disk inaccessible and disables the
caching. This happens only for regex operations, however the single lookup,
delete and invalidate works fine.
#### Steps taken
1. Installing from source code via docker :
Dockerfile :
```
FROM ubuntu:20.04
ARG LUA_VERSION=2.0.5
RUN DEBIAN_FRONTEND=noninteractive apt-get update \
&& DEBIAN_FRONTEND=noninteractive apt-get install -y ca-certificates
pkg-config build-essential bzip2 libssl-dev libxml2-dev libc6-dev libpcre3-dev
libncurses5-dev tcl-dev libboost-dev libcap-dev hwloc libtool lua5.2 autoconf
automake wget libncurses5-dev libncursesw5-dev dumb-init net-tools vim git
--no-install-recommends \
&& wget --no-verbose
https://luajit.org/download/LuaJIT-${LUA_VERSION}.tar.gz && tar xvzf
LuaJIT-${LUA_VERSION}.tar.gz && cd LuaJIT-${LUA_VERSION}/ && make && make
install \
&& cd /tmp \
&& git config --global http.sslverify false && git clone
https://git-wip-us.apache.org/repos/asf/trafficserver.git \
&& cd trafficserver \
&& autoreconf -if && ./configure --prefix=/opt/ts
--with-luajit=/usr/local && make && make install \
&& rm -rf /tmp/trafficserver \
&& rm -rf /var/lib/apt/lists/* \
&& apt-get clean
RUN mkdir -p /var/cache/trafficserver
RUN chmod -R 777 /var/cache/trafficserver
RUN mkdir -p /var/log/trafficserver
RUN chmod -R 777 /var/log/trafficserver
EXPOSE 6081
# https://github.com/Yelp/dumb-init#usage
ENTRYPOINT ["/usr/bin/dumb-init", "--"]
CMD ["/opt/ts/bin/traffic_server"]
```
Docker compose :
```
---
version: "3.2"
services:
ats:
network_mode: host
build:
context: ..
dockerfile: docker/Dockerfile
image: ats:10.0.0
volumes:
- type: bind
source : ../trafficserver
target : /opt/ts/etc/trafficserver
- type: bind
source : /opt/ats-data/cache
target : /var/cache/trafficserver
```
2. ATS Configs
storage.config :
```
/var/cache/trafficserver 100G
```
records.config :
```
CONFIG proxy.config.http.cache.http INT 1
CONFIG proxy.config.cache.ram_cache.size INT 2G
CONFIG proxy.config.log.logfile_dir STRING /var/log/trafficserver
CONFIG proxy.config.http_ui_enabled INT 1
```
remap.config
```
regex_map http://(.*):6081/ui/ http://{cache} @action=allow
```
#### Version Info :
- Traffic server : 10.0.0 (replicated on 9.0.2)
- Unix name : 5.4.0 x86_64 x86_64 x86_64 GNU/Linux
- Docker : 20.10.7, build f0df350
- Docker compose : 1.29.2, build 5becea4c
#### Additional context
1. Checked the permissions available for cache.db. Since we are running ATS
with default `nobody` as the user, it already has required permissions.
2.
```
==============
File open
==============
2309.095 ( 0.019 ms): traffic_server/385628 openat(dfd: CWD, filename:
0x80dd3100, flags: RDWR|CREAT|DIRECT|DSYNC, mode: IRUGO|IWUSR) = 20
==============
pread
==============
4314.438 ( 0.016 ms): [ET_AIO 6:20]/354163 pread64(fd:
20</var/cache/trafficserver/cache.db>, buf: 0x7f7eae8cc000, count: 8388608,
pos: 803446272) = -1 EINVAL (Invalid argument)
```
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