pcie hba

be saved in the/USR/LOCAL/PGSQL/DATA/BASE/DB1 directory. You can also use the initlocation command to specify a different location: $ initlocation/pgsql/data $ Export Pgdata2=/pgsql/data $ createdb-d PGDATA2 DB2 The database DB2 will be saved in the/pgsql/data directory. In addition, PostgreSQL version 6.4 can specify the text encoding when establishing the database: createdb-e "character encoding" "character encoding" see Configure, Initdb. Delete database: Destroydb database name PostgreSQL

Recently wrote a driver to virtual a file into SCSI DISK. The driver is essentially an HBA driver. When driving performance testing, it is found that IO performance is very low, only achieves 4mb/s throughput when a large amount of data is written, and has high performance when writing a small amount of data. The drive IO model is shown in the following illustration: A print analysis of the Queuecommand process in the driver found that the SCSI mid

unix| Backup SCO installation and backup of the tape drive under UNIX (i) Use tape drive to back up data for work reasons. In the implementation process summed up a number of experience for your reference. The server is IBM PC Server 250 (Dual-machine + array cabinet), the operating system is SCO UnixWare 7.1.1, because it is the financial system, also installed a dual-computer software GDS, SYBASE11.9.4 and financial system applications are installed on the disk array, there are now two appli

tools to create storage volumes and allocate addresses or SCSI Luns. If some entities do not have Luns, The LUN mask hides the LUN. The LUN binding only associates the LUN with the global ID of the HBA in the server. When the LUN mask and binding are completed, storage experts should go deep into the vswitch, create a region, and only allow dedicated adapters to communicate with specific storage ports. "In fact, the vswitch can enhance the LUN mask a

Initrd/initrd-2.6.16.60-0.21-smp ### Don't change this comment-YaST2 identifier: Original name: local rescue ### Title LOCAL RESCUE Root (hd0, 8) Kernel/vmlinuz-2.6.16.60-0.21-smp root =/dev/sda2 hde = noprobe hdg = noprobe resume =/dev/sda1 splash = silent showopts init =/sbin/sulogin Initrd/initrd-2.6.16.60-0.21-smp Title Linux with UltraPath Serial = 1, 9600n8 Root (hd0, 8) Kernel/vmlinuz-2.6.16.60-0.21-smp root =/dev/sda2 crashkernel = 64M @ 16 M console = ttyS0, 9600 console = tty0 hde =

, many small and medium enterprises prefer to use iSCSI storage for cost effectiveness.It is very important to distinguish between SCSI devices and FC Optical Fiber devices. FC Optical Fiber devices simulate the abstract devices of one or more SCSI devices at the bottom layer of storage virtualization, and do not have real SCSI devices, it is simulated through the SCSI protocol.GNBD (Global Network Block Device) Global Network Block devices are similar to iSCSI storage architecture, but data tra

technology, no MPIO. HBA is a hardware physical block used to connect disk drives and other storage devices. The HBA manufacturer creates a micro-port driver connected to STORPORT. SYS. Most HBA drivers report communication errors to Application Event Logs. Ideally, the entire chain of this event takes no more than 20 milliseconds. Performance is affected by mul

Directory Definition UML Participants Example Definition: The Singleton Mode means that there is only one instance. The Singleton mode ensures that a class has only one instance, and the instance is self-instantiated and provided to the entire system. This class is called a singleton class. Application: Each computer can have several printers, but only one printer spooler can be used to prevent two print jobs from being output to the printer at the same time. Each

System environment: the Centos system server needs to be connected to external storage and connected through optical fiber cables. you need to query the host card model when getting the interface. the command is as follows: [root @ localhost ~] # Lspci | grep-ifibre84: 00.0 fiber rechannel: QLogicCorp. ISP2532-based8GbFibreChanneltoPCI System environment: Centos systemThe server needs to connect to external storage and connect to it through optical fiber cables. you need to query the host card m

system on its own. The Singleton mode is suitable for scenarios where a class has only one instance, such as window manager, print buffer pool, and file system. They are all prototype examples. Typically, objects of different types are accessed by different objects in a software system. Therefore, a global access pointer is required, which is a well-known Singleton mode application. Of course, this is only when you are sure that you no longer need any more instances. In computer systems, re

, such as the keyboard, mouse, and display devices. These devices allow users to input data and view the operation results. Communication between the host and the Host: this is achieved by using a network interface card (NIC) or a cat. Host-to-storage device communication: Implemented by host bus adaptor (HBA. hbA is a dedicated Integrated Circuit (ASIC) Board that executes IO Interface methods betwee

Channel disk array cabinets: Storage capacity >=1T, dual RAID controller redundancy, the controller requires 4 host channel and 4 hard drive channel. The number of single cabinet supported hard drives is greater than 13. Support for online capacity expansion, RAID level support: 0, 1, 5, 0+1, 10, Hotspare. The host connects the disk array cabinet through the HBA card. Dual-Machine hot standby software: Requires support for active/active, Active/s

support for various platforms is the standardization of the Protocol. With standardized protocols, all types of platform solutions can be followed by the introduction of a common standard of support and products, such a considerable market size can be built up. The SNIa Association formally passed the iSCSI standard in February 2003, and although iSCSI has been formally standardized, it does not necessarily mean that it can be quickly popularized, whether iSCSI can stand firm in the enterprise

The relevant information is displayed in connection with the BIOS or PCI, most likely the motherboard's exception:I tried the command line parameter:i915.i915_enable_rc6=0But without success. Is it still useful for Ivy Bridge CPUAnother (rather unlikely, but I'll still mention it just in case) reason could is that you ' re using Igb_uioModule that's really old (I don ' t remember when Igb_uio gained IOMMU support, probably 1.4.x), which areWhy I asked on DPDK version, but since your ' re using 1

. Figure 4 PMC flashtec NVRAM accelerator card First of all, from the hardware appearance, This is a standard-sized, half-height, half-length PCIe card. It is compact and can be placed on any server, which is basically compatible with all servers. In addition, PMC has made several innovations on the interface layer connected to the host. 4. The left side shows the native interfaces of the current application, all of which are based on blocks. Therefo

 Zhang Dong: OpenPOWER CAPIWhy so fast? (ii)PMC Company Data center storage architect Zhang Dongwith the How does the CAPI FPGA work? First recognize the three characters in the system: AFU (Acceleration Function Unit), the main acceleration logic part is the fpag acceleration chip, the user can put their own acceleration logic and Firmware write it in. psl-power Service Layer,provides an interface toAFUfor reading and writing main memory andv2pAddress Translation(with theCPUside uses the s

the system. Some interruptions in the system are hard-wired. For example, the periodic timer of the real-time clock may be fixed to Pin 3 of the interrupt controller. Other pins connected to the controller can only be determined by the Control card inserted into the specific ISA or PCI slot. For example, pin 4 in the interrupt controller may be connected to the PCIe slot No. 0, but an Ethernet card may be inserted in the slot one day and changed to t

Ntbeeprom settings and data transfer across nodesIn addition to monitoring the heartbeat of the system state, the dual-control dual-live system also requires a channel capable of transmitting data across nodes. The PCIe non-transparent bridge (NTB) is favored by many people because of its standard-based PCIE specification, low software dependency, fast speed, and easy configuration. The principle of cross-n

completion.Finally, we go back to nvme over fabrics to demonstrate how NVMF leverages RDMA technology in a client-written request processing process.The 1,nvme queue corresponds to the client-side RDMA QP One by one, and the NVMe command in the NVME submission queue is stored in an RDMA QP registered memory address (possibly with an I/O Payload) and then via RDMA Send Queue sent out;2, when Target's NIC receives work request, the NVME Command DMA is registered in memory with target RDMA QP and

to package processing. The disadvantage is that once you don't have some functionality, those accelerators are wasted. Pure software processing is very flexible, but at the cost of power and performance.Pure DPDK performance is very high, Intel itself gives the data is, processing a packet 80时钟分 cycle. A 3.6Ghz single core dual-threaded Xeon, 64-byte packet, pure forwarding capacity of more than 90Mpps, that is, 90 million packets per second.I wonder if you can see that the 80-week period is a