概述

今天给dell t20装了zstack，没错zstack镜像底层其实就是centos，服务器里面有四块硬盘，一块300g的我是做系统盘的，三块1T的硬盘我是打算用来存数据的，还可以做dell r410的存储，因为dell t20是只有软raid的，我给这三块硬盘做的是raid0，做完raid之后安装完系统之后，我才发现我没有给这个raid格式化，我百度了一下找到了查看raid的方式，下面是操作

操作

首先我的dev目录是下面这样子的

[root@MiWiFi-R1CM-srv ~]# ls /devautofs         cpu              fd         kvm           mei                 oldmem  rfkill  sdc3      snd     tty11  tty19  tty26  tty33  tty40  tty48  tty55  tty62  ttyS3    usbmon4  vcsa3        zstackblock          cpu_dma_latency  full       log           mem                 port    rtc     sdd       stderr  tty12  tty2   tty27  tty34  tty41  tty49  tty56  tty63  uhid     vcs      vfiobsg            crash            fuse       loop-control  mqueue              ppp     rtc0    sg0       stdin   tty13  tty20  tty28  tty35  tty42  tty5   tty57  tty7   uinput   vcs1     vga_arbiterbtrfs-control  disk             hpet       mapper        net                 ptmx    sda     sg1       stdout  tty14  tty21  tty29  tty36  tty43  tty50  tty58  tty8   urandom  vcs2     vhost-netbus            dm-0             hugepages  mcelog        network_latency     ptp0    sdb     sg2       tty     tty15  tty22  tty3   tty37  tty44  tty51  tty59  tty9   usbmon0  vcs3     watchdogchar           dm-1             initctl    md            network_throughput  pts     sdc     sg3       tty0    tty16  tty23  tty30  tty38  tty45  tty52  tty6   ttyS0  usbmon1  vcsa     watchdog0console        dri              input      md126         null                random  sdc1    shm       tty1    tty17  tty24  tty31  tty39  tty46  tty53  tty60  ttyS1  usbmon2  vcsa1    watchdog1core           fb0              kmsg       md127         nvram               raw     sdc2    snapshot  tty10   tty18  tty25  tty32  tty4   tty47  tty54  tty61  ttyS2  usbmon3  vcsa2    zero

重点是下面几个 sda,sdb,sdc,sdc1,sdc2,sdc3,sdd

[root@MiWiFi-R1CM-srv disk]#  cat /proc/mdstatPersonalities : [raid0] md126 : active raid0 sda[2] sdb[1] sdd[0]      2930245632 blocks super external:/md127/0 32k chunks      md127 : inactive sda[2](S) sdb[1](S) sdd[0](S)      9459 blocks super external:imsm       unused devices: 
    

可以看到设备文件是md126和md127，所以我们只要格式化md126就可以了，但是因为是大于2T的，所以我们要把他格式化成gpt分区表才可以，所以不能使用fdisk格式化，要使用gdisk，具体流程如下

[root@MiWiFi-R1CM-srv disk]# gdisk /dev/md126GPT fdisk (gdisk) version 0.8.6Partition table scan:  MBR: protective  BSD: not present  APM: not present  GPT: presentFound valid GPT with protective MBR; using GPT.Command (? for help): ?b    back up GPT data to a filec    change a partition's named    delete a partitioni    show detailed information on a partitionl    list known partition typesn    add a new partitiono    create a new empty GUID partition table (GPT)p    print the partition tableq    quit without saving changesr    recovery and transformation options (experts only)s    sort partitionst    change a partition's type codev    verify diskw    write table to disk and exitx    extra functionality (experts only)?    print this menuCommand (? for help): oThis option deletes all partitions and creates a new protective MBR.Proceed? (Y/N): yCommand (? for help): nPartition number (1-128, default 1): 1First sector (34-5860491230, default = 2048) or {+-}size{KMGTP}: Last sector (2048-5860491230, default = 5860491230) or {+-}size{KMGTP}: Current type is 'Linux filesystem'Hex code or GUID (L to show codes, Enter = 8300): L0700 Microsoft basic data  0c01 Microsoft reserved    2700 Windows RE          4200 Windows LDM data      4201 Windows LDM metadata  7501 IBM GPFS            7f00 ChromeOS kernel       7f01 ChromeOS root         7f02 ChromeOS reserved   8200 Linux swap            8300 Linux filesystem      8301 Linux reserved      8e00 Linux LVM             a500 FreeBSD disklabel     a501 FreeBSD boot        a502 FreeBSD swap          a503 FreeBSD UFS           a504 FreeBSD ZFS         a505 FreeBSD Vinum/RAID    a580 Midnight BSD data     a581 Midnight BSD boot   a582 Midnight BSD swap     a583 Midnight BSD UFS      a584 Midnight BSD ZFS    a585 Midnight BSD Vinum    a800 Apple UFS             a901 NetBSD swap         a902 NetBSD FFS            a903 NetBSD LFS            a904 NetBSD concatenated a905 NetBSD encrypted      a906 NetBSD RAID           ab00 Apple boot          af00 Apple HFS/HFS+        af01 Apple RAID            af02 Apple RAID offline  af03 Apple label           af04 AppleTV recovery      af05 Apple Core Storage  be00 Solaris boot          bf00 Solaris root          bf01 Solaris /usr & Mac Zbf02 Solaris swap          bf03 Solaris backup        bf04 Solaris /var        bf05 Solaris /home         bf06 Solaris alternate se  bf07 Solaris Reserved 1  bf08 Solaris Reserved 2    bf09 Solaris Reserved 3    bf0a Solaris Reserved 4  bf0b Solaris Reserved 5    c001 HP-UX data            c002 HP-UX service       ed00 Sony system partitio  ef00 EFI System            ef01 MBR partition schemeef02 BIOS boot partition   fb00 VMWare VMFS           fb01 VMWare reserved     fc00 VMWare kcore crash p  fd00 Linux RAID            Hex code or GUID (L to show codes, Enter = 8300): 8300Changed type of partition to 'Linux filesystem'Command (? for help): wFinal checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTINGPARTITIONS!!Do you want to proceed? (Y/N): YOK; writing new GUID partition table (GPT) to /dev/md126.The operation has completed successfully.

之后我们要做的就是格式化分区

[root@MiWiFi-R1CM-srv data]# df -h文件系统                 容量  已用  可用 已用% 挂载点/dev/mapper/zstack-root  290G  5.9G  284G    3% /devtmpfs                 7.8G     0  7.8G    0% /devtmpfs                    7.8G  4.0K  7.8G    1% /dev/shmtmpfs                    7.8G  8.7M  7.8G    1% /runtmpfs                    7.8G     0  7.8G    0% /sys/fs/cgroup/dev/sdc2                477M   99M  349M   23% /boot/dev/sdc1                200M  9.5M  191M    5% /boot/efitmpfs                    1.6G     0  1.6G    0% /run/user/0tmpfs                    1.6G     0  1.6G    0% /run/user/1000/dev/md126p1             2.7T   89M  2.6T    1% /data

没错，有2.7个T

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