Command (m for help):p Disk /dev/mapper/comsys-dm0: 107.3 GB, 107374182400 bytes 255 heads, 63 sectors/track, 13054 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id Sys
Device Boot Start End Blocks Id System /dev/sda1 * 1 26 204800 83 Linux Partition 1 does not end on cylinder boundary. /dev/sda2 26 287 2097152 82 Linux swap / Solaris Partition 2 does not end on cylinder boundary. /dev/sda3 287 17850 141071360 83 Linux Disk /dev/sdb: 3774 MB, ...
配置存储时一定会遇到 multipath 多路径的问题,不同的厂商比如EMC PowerPath,Veritas VxDMP等都有独立的多路径软件,而多路径软件的功能也很清晰主要用于IO流量负载均衡和故障切换恢复等。在 Linux 环境中device-mapper-multipath是一个免费的通用型多路径管理软件,其配置文件也非常简单,主要通过修改 /etc/multipath.conf...
# Limit the block devices that are used by LVM system components. # Because devices/filter may be overridden from the command line, it is # not suitable for system-wide device filtering, e.g. udev and lvmetad. # Use global_filter to hide devices from these LVM system components. # The ...
Linux系统中smartctl进行分析,目的在于说明相关工具的使用,并对SMART(Self-Monitoring, Analysis and Reporting Technology)做一些分析。 2 术语、定义和缩略语 2.1 术语、定义 2.1。 2.1 术语/定义 含义 SMART Self-Monitoring, Analysis and Reporting Technology ...
Command (m for help): w ---写入列表相当于保存 The partition table has been altered! Calling ioctl() to re-read partition table. Syncing disks. 注:如果同一台设备的两个node挂同样的盘符,另一个盘符还需要再次写入w就行。不需要n了。 格式化: [root@liujing ~]#...
linux 多路径配置 首先介绍一下什么是多路径(multi-path)?先说说多路径功能产生的背景,在多路径功能出现之前,主机上的硬盘是直接挂接到一个总线(PCI)上,路径是一对一的关系,也就是一条路径指向一个硬盘或是存储设备,这样的一对一关系对于操作系统而言,处理相对简单,但是缺少了可靠性。当出现了光纤通道网络(Fibre...
4) Resize your logical volume (the below command takes all available space in the vg)5) Resize your filesystem 6) Verify vg, lv and filesystem extension has worked appropriately 模拟存储端扩容testlv增加 查看客户端多路径情况 客户端更新存储 更新聚合设备 更新pv空间 更新lv空间 更新文件...
5.9. Multipath Command Options | DM 多路径 | Red Hat Enterprise Linux | 7 | Red Hat Documentation
(util-linux 2.34).Changes will remain in memory only, until you decide to write them.Be careful before using the write command.Device does not contain a recognized partition table.Created a new DOS disklabel with disk identifier 0xf7a0076c.Command (m for help): nPartition typep primary (...