ceph

, select HOSTVGName the volume NEWLV and set the size to 100MBClick Finish,newlv to create a successfulClick Choose VolumeClick Finish to confirm adding newlv as volume to KVM1New volume added successfully on the host there is a NEWLV-named LVother types of storage PoolKVM also supports iscsi,ceph and other types of Storage Pool, which is not described here, the most common is the directory type, other types can refer to the document http://libvirt.or

source volume to the new volume, and then deletes the old volume. 2. If volume has been attach to the VM, Cinder creates a new volume, calls Nova to copy the data from the source volume to the new volume, and then deletes the old volume. Currently only supports compute Libvirt driver. Note in the case of multiple backend, host must use the host full name. For example: cinder migrate vol-b21-1 [emailprotected]2.3 volume Backupopenstack Juno Version support volume Backup to

background on the cap and its evolution. There also have been in the past a fierce debate between traditional Parallel DBMS with Map Reduce paradigm of processing. Pro Parallel DBMS (another) paper (s) is rebutted by the pro MapReduce one. Ironically the Hadoop community from then have come full circle with the introduction of MPI style GKFX nothing based PR Ocessing on Hadoop-sql on Hadoop.File SystemsAs the focus shifts to low latency processing, there are a shift from traditional disk b

infrastructure services. When UOS 2.0 was released, unitedstack had a very clear product positioning: UOS will redefine an openstack technical architecture and O M system for large-scale enterprise-level production businesses, the goal is to provide customers with a high-performance, highly reliable, vendor-free, and open infrastructure cloud service platform (IAAS. Unitedstack will provide out-of-the-box openstack cloud services to enterprise users through the UOS public cloud and UOS hosting

-Keystone start cinder-API service' cinder: schedline' install cinder-sched' determine whether to install 'cinder :: volume 'the default value of cluster_simple is false. Therefore, cinder: volume: iSCSI 'cinder: volume is not installed.: CEpH 'Vi. ceilometer first in openstack/manifests/cellometer. PP executes cellometer installation by cellometer/init. starting with PP, we mainly modify some files and directories and install the basic package. Then

change each time libvirt logs into the iSCSI target, it is recommended to configure the pool to use/dev/disk/by-pathOr/dev/disk/by-idFor the target path. SCSI volume pools This provides a pool based on a scsi hba. volumes are preexisting SCSI Luns, and cannot be created via the libvirt APIs. since/dev/xxx names aren't generally stable, it is recommended to configure the pool to use/dev/disk/by-pathOr/dev/disk/by-idFor the target path. RBD pools This storage Driver provides a pool

support, and so on. 2.6.32 2009.12 Added virtual memory de-duplicacion, rewritten writeback code, improved btrfs file system, added ATI r600/r700 3D and kms support, CFQ low transmission delay time mode, perf timechart Tool the Memory Controller supports Soft Limits, S + core architecture, Intel moorestown and its new firmware interfaces, runtime power management, and new drivers. 2.6.34 2010.5 Two new file systems, CEpH

If the partition information has been recorded, an error is reported. If the partition information on a disk is not recorded, it is completed quietly. Partx-a-n M: n device records the information of the nth to nth partitions. M reads the information of the nth partition. M: specifies the minimum value for reading the Partition Number: n: specify the maximum value of the read Partition Number. kpartx command: create a DEVICE ing from the partition table. kpartx-af DEVICE-a: Add a partition ing.

computers in your internal network, only the selected incoming network connection is accepted. Trusted-all network connections are accepted. To list all available regions, run: # Firewall-cmd -- get-zones Work drop internal external trusted home dmz public block List default regions: # Firewall-cmd -- get-default-zone Public Change the default region: # Firewall-cmd -- set-default-zone = dmz # Firewall-cmd -- get-default-zone Dmz (2) firewall Service: The FirewallD service uses an XML configura

Create an NTP environment in Centos Recently, an Openstack and Ceph cluster were built. Because multiple nodes exist in the cluster and time synchronization is required between nodes, NTP is required. In addition, in some cases, the network environment is closed, therefore, you need to build an NTP server. Server IP Address Role Description Synchronization mode 192.168.100.203 NTPD service 1. synchronizes the standard time with the external public NTP

Three months later, Linus Torvalds released the 2.6.34 official version of Linux Kernel in May 17. In terms of new features, the official version of Linux 2.6.34 brings a large number of open-source Graphics card driver updates and support for explicit/exclusive switching of notebook sets (also known as Hybrid Graphics but requires restarting X), distributed FLASH file system LogFS/Ceph, faster KVM network support, Btrfs file system upgrade, VMware B

four partitions in total; 2 bytes: indicates whether the MBA is valid; 55AA indicates that the MBA is valid; Note: 1) a maximum of four primary partitions and only one extended partition can be created. 2) extended partitions cannot be used independently. To continue to be divided into logical partitions, multiple logical partitions can be created. 3) a partition is an independent file system. 4) primary and extended partitions: 1-4; logical partitions: 5 + Ii. VFS Virtual File System 1. VFS: V

options of big data are becoming more and more abundant. Of course, hadoop's HDFS is in the core circle, but other storage platforms can also provide compatibility similar to hadoop, plug-and-play, and provide some unique value. Several main storage options are as follows: Traditional San or NAS: this should be the best storage option to support big data applications, because a large number of data centers can provide such storage options, and also include various storage services, for example,

An important part of Hadoop, HDFs, which plays an important role in the back-end storage of files. HDFs is targeted at low-end servers, where there are many read operations and less write operations. In the case of distributed storage, it is more likely that the data is damaged, in order to ensure the reliability and integrity of the data, the data inspection and (checksum) and multi-copy placement strategy are implemented. In HDFs, the use of more than the CRC (cyclic redundancy check code) tes

structure: glance # \ dtImage_locationsImagesMigrate_versionImage status: queued saving active killed deleted pending_deleteImage formatRAWQcow2 (Copy on Write of QEMU)VHD (Microsoft's Virtual PC and Hyper-V)VMDKVDIISOAKI, ARI, AMIDelayed deletion? Glance-scrubberSet backend storage: Ceph *Create an imageOmittedNova computing componentVirtual Machine (instance) Status: vm_state task_state power_stateP194 in libvirt, virtual machines are defined a

Starlingx is both a development project and an integrated project. It integrates new services with more open-source projects into an overall edge cloud software stack. Based on the Code provided by Intel and Wind River and hosted by the openstack Foundation. It combines its components with the first open-source project (including openstack, CEpH, and ovs. Wx_fmt = PNG "/> Starlingx is designed to support the most demanding applications in edge, ind

Metadata is a key element in a file system. The core of each distributed file system is the design of MDS. Distributed File systems, such as HDFS, clustre, and fastdfs, adopt an independent MDS architecture, and CEpH uses a design architecture that also describes the distribution of MDS, gluster is designed to store metadata in combination with data files. Basically, it only stores metadata messages related to local files. Gluster is evaluated as a r

and use the declaration of pv is released when a user has run out of their volume, can be removed through the API PVC, for resource recycling. When the PVC has been removed, the associated volume is released state, but it cannot be used by another PVC. Since the data produced by the previous PVC is still in volume, it must beis processed. Re-declare that when volume is released from its PVC, PV's Recaim rules tell the cluster what to do with volume. For now, volume can be either retained or re

, Exists, Doesnotexist, Gt, LT and other operators to select node.Scheduling side Dew is more flexible. 8.2 Daemonset: A specific scenario scheduler Daemonset is used to manage only one copy instance of the pod running on each node in the cluster,This usage is suitable for applications with the following requirements: Run a daemon process with glusterfs storage or ceph storage on each node Run a log capture program on each node, such as F

when the replica is in master-slave replication? (In a relational database, this is often a configurable option.) In other systems, such as Ceph, is the system default)It is known that synchronous replication has a considerable delay, while asynchronous replication responds fairly quickly. But asynchronous replication does not guarantee how long it will take to complete. In some cases, follower data may be a few minutes or more behind the data on lea