Introduction
In this tutorial we learn how to install blktrace on CentOS 8.
What is blktrace
blktrace is a block layer IO tracing mechanism which provides detailed information about request queue operations to user space. This package includes both blktrace, a utility which gathers event traces from the kernel; and blkparse, a utility which formats trace data collected by blktrace. You should install the blktrace package if you need to gather detailed information about IO patterns.
We can use yum or dnf to install blktrace on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install blktrace.
Install blktrace on CentOS 8 Using dnf
Update yum database with dnf using the following command.
sudo dnf makecache --refresh
The output should look something like this:
CentOS Linux 8 - AppStream 43 kB/s | 4.3 kB 00:00
CentOS Linux 8 - BaseOS 65 kB/s | 3.9 kB 00:00
CentOS Linux 8 - ContinuousRelease 43 kB/s | 3.0 kB 00:00
CentOS Linux 8 - Extras 23 kB/s | 1.5 kB 00:00
CentOS Linux 8 - FastTrack 40 kB/s | 3.0 kB 00:00
CentOS Linux 8 - HighAvailability 36 kB/s | 3.9 kB 00:00
CentOS Linux 8 - Plus 24 kB/s | 1.5 kB 00:00
CentOS Linux 8 - PowerTools 50 kB/s | 4.3 kB 00:00
Extra Packages for Enterprise Linux Modular 8 - x86_64 13 kB/s | 9.2 kB 00:00
Extra Packages for Enterprise Linux 8 - x86_64 24 kB/s | 8.5 kB 00:00
Metadata cache created.
After updating yum database, We can install blktrace using dnf by running the following command:
sudo dnf -y install blktrace
Install blktrace on CentOS 8 Using yum
Update yum database with yum using the following command.
sudo yum makecache --refresh
The output should look something like this:
CentOS Linux 8 - AppStream 43 kB/s | 4.3 kB 00:00
CentOS Linux 8 - BaseOS 65 kB/s | 3.9 kB 00:00
CentOS Linux 8 - ContinuousRelease 43 kB/s | 3.0 kB 00:00
CentOS Linux 8 - Extras 23 kB/s | 1.5 kB 00:00
CentOS Linux 8 - FastTrack 40 kB/s | 3.0 kB 00:00
CentOS Linux 8 - HighAvailability 36 kB/s | 3.9 kB 00:00
CentOS Linux 8 - Plus 24 kB/s | 1.5 kB 00:00
CentOS Linux 8 - PowerTools 50 kB/s | 4.3 kB 00:00
Extra Packages for Enterprise Linux Modular 8 - x86_64 13 kB/s | 9.2 kB 00:00
Extra Packages for Enterprise Linux 8 - x86_64 24 kB/s | 8.5 kB 00:00
Metadata cache created.
After updating yum database, We can install blktrace using yum by running the following command:
sudo yum -y install blktrace
How To Uninstall blktrace on CentOS 8
To uninstall only the blktrace package we can use the following command:
sudo dnf remove blktrace
blktrace Package Contents on CentOS 8
/usr/bin/blkiomon
/usr/bin/blkparse
/usr/bin/blkrawverify
/usr/bin/blktrace
/usr/bin/bno_plot.py
/usr/bin/btrace
/usr/bin/btrecord
/usr/bin/btreplay
/usr/bin/btt
/usr/bin/verify_blkparse
/usr/lib/.build-id
/usr/lib/.build-id/0c
/usr/lib/.build-id/0c/fa94daca88ef1b101084590253f2ee3a3c6a6a
/usr/lib/.build-id/83
/usr/lib/.build-id/83/dc310718402f4e3b763c4cb20606c006847481
/usr/lib/.build-id/87
/usr/lib/.build-id/87/a36047afcbf63151c9770162f08c7b263cc41b
/usr/lib/.build-id/95
/usr/lib/.build-id/95/8557e7dccc65342287a7b6bdb8de5e5a62e12e
/usr/lib/.build-id/97
/usr/lib/.build-id/97/76e530f03f493db772b16fede7acaf7540b32a
/usr/lib/.build-id/b2
/usr/lib/.build-id/b2/5b3af772a9e7c13bba025c98093ce447ef8849
/usr/lib/.build-id/c2
/usr/lib/.build-id/c2/383e9ebbb122baa02c75d0e018e8701041f2a3
/usr/lib/.build-id/f2
/usr/lib/.build-id/f2/ed0b7800536744d23f122d4cc6537ca8f4f888
/usr/share/doc/blktrace
/usr/share/doc/blktrace/COPYING
/usr/share/doc/blktrace/README
/usr/share/man/man1/blkparse.1.gz
/usr/share/man/man1/blkrawverify.1.gz
/usr/share/man/man1/bno_plot.1.gz
/usr/share/man/man1/btt.1.gz
/usr/share/man/man1/verify_blkparse.1.gz
/usr/share/man/man8/blkiomon.8.gz
/usr/share/man/man8/blktrace.8.gz
/usr/share/man/man8/btrace.8.gz
/usr/share/man/man8/btrecord.8.gz
/usr/share/man/man8/btreplay.8.gz
References
Summary
In this tutorial we learn how to install blktrace on CentOS 8 using yum and dnf.
