kickstart common errors [notes]

Question: new value non-existent xfs filesystem is not valid as a default fs type analysis During installation, enter shell (CTL +F2) modprobe xfs ; lsmod | grep xfs Unable to find xfs module It seems to be wen in pxeboot in iso terms of settlement Download vmlinuz again initrd.img , do not use files provided ...

Posted on Fri, 22 May 2020 09:00:53 -0700 by yaatra

Improve IOPS of Ceph cluster through fio pressure measuring rbd equipment

1, fio installation 1. download fio fio official website address: http://freshmeat.net/projects/fio/ wget http://brick.kernel.dk/snaps/fio-2.0.7.tar.gz 2. Confirm whether CEPH devel compat is installed [root@node-2 fio]# rpm -qa | grep ceph-devel-compat ceph-devel-compat-0.94.6-1.el7.centos.x86 ...

Posted on Sun, 23 Feb 2020 02:30:03 -0800 by TheBrandon

FreelistManager for BlueStore Source Analysis

Preface BlueStore manages bare devices directly and needs to manage space allocation and release on its own.The results of Stupid and Bitmap allocators are stored in memory, and the persistence of allocation results is done through FreelistManager. A block can be in either occupied or idle state. Only one state needs to be recorded for persiste ...

Posted on Mon, 10 Feb 2020 18:57:51 -0800 by banjax

Enterprise open source NAS system: OviOS Linux

preface Recently, I met a need. There are some large files to store. Because the files are very large, they do not want to be stored in the existing high available storage such as Ceph or GlusterFS to avoid the waste of resources. So I thought of using ISCSI mount to achieve this requirement, and began to find an open source NAS system. Open so ...

Posted on Tue, 17 Dec 2019 21:55:55 -0800 by CrusaderSean

ceph generation capacity expansion 24 hours

Finally spent 24 hours of ceph production environment data migration. Let's record the problems and solutions we have encountered, and then we will have solutions to them. Let's start with an openshift issue. Everyone should be familiar with openshift. Many openshift cloud storage that needs to be mounted is connected to ceph cluster. Under th ...

Posted on Sun, 15 Dec 2019 10:18:01 -0800 by Wave

k8s uses ceph to realize dynamic persistent storage

brief introduction This article introduces how to use ceph to provide dynamic pv application for k8s. ceph provides the underlying storage function. cephfs supports k8s pv's three access modes: ReadWriteOnce, ReadOnlyMany, ReadWriteMany. RBD supports ReadWriteOnce, ReadOnlyMany Access mode is only a capability description, not a mandatory one. ...

Posted on Sat, 07 Dec 2019 05:24:50 -0800 by s1m0n

004. Use of CEPH block equipment foundation

I. Basic preparation Refer to the document 002.Ceph installation and deployment to deploy a basic cluster; Add a new node host name and IP in the deploy node to add resolution: 1 [root@deploy ~]# echo "172.24.8.75 cephclient" >>/etc/hosts Configure domestic yum source: 1 [root@cephclient ~]# yum -y update 2 [ ...

Posted on Sat, 30 Nov 2019 11:58:24 -0800 by verN

10. Control node installation cinder

Article directory 10.1 storage classification 10.2 creating a cinder database 10.3 register cinder in keystone 10.3.1 keystone creates a cinder user 10.3.2 add the cinder user to the admin permission of the test project on Keystone 10.3.3 create a cinder storage service 10.3.4 creating API services for cinder 10.4 installat ...

Posted on Thu, 28 Nov 2019 10:08:02 -0800 by praveenbabur

Linux file index (inode)

1, introduction ceph file system is exposed to too many file index related operations, so it's better to sort out the related knowledge about Linux file index inode (Note: all described in this article are in the same file system, and the situation across file systems will be different)     1.1 inode inode, also known as index (table entry), m ...

Posted on Fri, 22 Nov 2019 11:38:46 -0800 by vij

Deploy Stein version OpenStack with Kolla (including Ceph storage)

This is my tweet. If you have questions, you can add CommunicationsAnd don't elaborate too much here in Kolla's introduction, there are many documents on the web.This article focuses on the latest version of Kolla to solve the problem that a single node cannot deploy ceph-osd (multi-node cannot deploy Ceph-osd when testing).In the latest versi ...

Posted on Mon, 02 Sep 2019 09:23:41 -0700 by smp