sginfo:查看硬盘信息 sg_format:格式化硬盘(低级格式化) sg_log:查看硬盘的log信息 sg_luns:查看target上有多少个lun sg_map:查看硬盘映射情况, 查看硬盘所在的bus, chan, id,lun,type. sgpio:控制盘位的LED灯 sg_ses:scsi enclosure service控制, ses是对接机箱状态监控,设置等服务 sg_scan: 扫描系统中的硬...
1、首次启动,需要格式化NameNode hadoop namenode -format 1. 2、分别在hadoop101和hadoop102上启动HDFS和yarn(由于配置时NameNode在hadoop101上,ResourceManager在hadoop102上) 在hadoop101上(bin目录下) ./start-dfs.sh 1. 在hadoop102(bin目录下) ./yarn-site.sh 1. 3、通过jps命令查看启动进程 4、也可以通...
This option simply dumps the identify data in hex to stdout, in a format similar to that from /proc/, and suitable for later use with the -Istdin option. -k Get/set the keep_settings_over_reset flag for the drive. When this flag is set, the driver will preserve the -dmu options...
This option simply dumps the identify data in hex to stdout, in a format similar to that from /proc/, and suitable for later use with the --Istdin option. -k Get/set the keep_settings_over_reset flag for the drive. When this flag is set, the driver will preserve the -dmu options...
AdvancedPM=no WriteCache=enabled Drive conforms to: Reserved: ATA/ATAPI-1,2,3,4,5,6,7 2. Get hard disk identification information in a detailed format with the "hdparm -I" command. I see lot of useful information. herong$ sudo hdparm -I /dev/sda ...
As noted above, the-msectcountand-u1options should be used with caution at first, preferably on a read-only filesystem. Most drives work well with these features, but a few drive/controller combinations are not 100% compatible. Filesystem corruption may result. Backup everything before experimen...
hdparm will still revert to 16-byte commands for things that cannot be done with the 12-byte format (e.g. sector accesses beyond 28-bits). -q Handle the next option quietly, suppressing normal output (but not error messages). This is useful for reducing screen clutter when running from ...
-I Request identification info directly from the drive, which is displayed in a new expanded format with considerably more detail than with the older -i flag. 直接从驱动器请求标识信息,该信息以新的扩展格式显示,比旧的-i标志更详细。 --Istdin ...
how-do-i-perform-a-low-level-format-of-a-sandforce-solid-state-disk/485949#485949的建议sudo hdparm下面是来自hdparm -I /dev/sdc的输出: Model Number: WDC 浏览0提问于2018-08-23得票数 1 1回答 Mac上的硬盘基准测试 、、、 在Linux上,我通常会使用"hdparm -tT设备“,当我想快速了解硬盘与另一...
说明:使用hdparm可以测试SSD硬盘性能,数据准确。 1、安装 yum install hdparm #centos apt-get install hdparm #debian,ubuntu 2、使用 hdparm -t /dev/xvda /dev/xvdb为硬盘符,可使用fdisk -l获取。 ---...