ubuntu + 青云, 配置 Virtual SAN
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refer to: https://docs.qingcloud.com/guide/vsan.html
一直都很简单, 就是 "创建目标门户组" 的时候, 要在生成的名字后面, 补上一个名字.
然后新建一个硬盘 . 把它挂到 Virtual SAN上面去. 即可.
这样的话, 所有的 上传图片就可以放在一个地方了.
但是青云的文档没有给出如何在ubuntu上配置 iSCSI , 参考: https://help.ubuntu.com/lts/serverguide/iscsi-initiator.html
$ sudo apt-get install open-iscsi
然后修改配置文件, 让它自动启动: ( /etc/iscsi/iscsid.conf )
node.startup = automatic (记得删掉下面的 = manual ) 然后, 尝试连接: ( 这个iSCSI 的ip 是 .50) $ sudo iscsiadm -m discovery -t st -p 192.168.66.50 # 看到结果: 说明可以连接到 这个 SCSI . 192.168.66.50:3260,1 iqn.2014-12.com.qingcloud.s2:sn.xx # 开始登录: $ sudo iscsiadm -m node --login Logging in to [iface: default, target: iqn.2014-12.com.qingcloud.s2:sn.xx, portal: 192.168.66.50,3260] (multiple) Login to [iface: default, target: iqn.2014-12.com.qingcloud.s2:sn.xx, portal: 192.168.66.50,3260] successful.
下面的步骤, 前提是你的硬盘没有做过任何分区( fdisk) , 也没有为它做任何文件系统( mkfs )
# 查看这个 iSCSI 是否已经成功加载: (上面的 sdb 就是 新的scsi , 因为: sdb: unknown partition table ) $ dmesg | grep sd [ 4.322384] sd 2:0:0:0: Attached scsi generic sg1 type 0 [ 4.322797] sd 2:0:0:0: [sda] 41943040 512-byte logical blocks: (21.4 GB/20.0 GiB) [ 4.322843] sd 2:0:0:0: [sda] Write Protect is off [ 4.322846] sd 2:0:0:0: [sda] Mode Sense: 03 00 00 00 [ 4.322896] sd 2:0:0:0: [sda] Cache data unavailable [ 4.322899] sd 2:0:0:0: [sda] Assuming drive cache: write through [ 4.323230] sd 2:0:0:0: [sda] Cache data unavailable [ 4.323233] sd 2:0:0:0: [sda] Assuming drive cache: write through [ 4.325312] sda: sda1 sda2 < sda5 > [ 4.325729] sd 2:0:0:0: [sda] Cache data unavailable [ 4.325732] sd 2:0:0:0: [sda] Assuming drive cache: write through [ 4.325735] sd 2:0:0:0: [sda] Attached SCSI disk [ 2486.941805] sd 4:0:0:3: Attached scsi generic sg3 type 0 [ 2486.952093] sd 4:0:0:3: [sdb] 1126400000 512-byte logical blocks: (576 GB/537 GiB) [ 2486.954195] sd 4:0:0:3: [sdb] Write Protect is off [ 2486.954200] sd 4:0:0:3: [sdb] Mode Sense: 8f 00 00 08 [ 2486.954692] sd 4:0:0:3: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA [ 2486.960577] sdb: sdb1 [ 2486.964862] sd 4:0:0:3: [sdb] Attached SCSI disk
$ sudo iscsiadm -m session -o show tcp: [1] 192.168.88.50:3260,1 iqn.2014-12.com.qingcloud.s2:sn.store # 查看目前已有的分区. 因为 ISCSI 挂载了一个100G的硬盘, 所以, : sdc 就是了. $ cat /proc/partitions major minor #blocks name 8 0 20971520 sda 8 1 20969472 sda1 8 16 1048576 sdb 8 17 1 sdb1 8 32 104857600 sdc 8 33 1 sdc1 但是我输入 $ df -kh , 发现它还是不能使用. 需要给它 mount 一下: Filesystem Size Used Avail Use% Mounted on /dev/sda1 20G 3.4G 16G 19% / none 4.0K 0 4.0K 0% /sys/fs/cgroup udev 487M 4.0K 487M 1% /dev tmpfs 100M 448K 99M 1% /run none 5.0M 0 5.0M 0% /run/lock none 497M 0 497M 0% /run/shm none 100M 0 100M 0% /run/user $ lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 20G 0 disk └─sda1 8:1 0 20G 0 part / sdb 8:16 0 1G 0 disk └─sdb1 8:17 0 1K 0 part sdc 8:32 0 100G 0 disk └─sdc1 8:33 0 1K 0 part
其他操作:
注解 如果你想在客户端重启时自动登录，请执行下面的命令： $ iscsiadm -m node -T <目标IQN> -p --op update -n node.startup -v automatic 卸载、登出、删除目标 $ umount /data (/data是共享存储挂载的目录) $ iscsiadm -m node -T <目标IQN> -p --logout $ iscsiadm -m node -T <目标IQN> -p --op=delete 注解 如果你想登出所有的目标，请执行下面的命令： $ iscsiadm -m node --logout
查看 所有挂载的硬盘情况
$ sudo fdisk -l ( 记得这里要加sudo ,否则会啥内容都没有) ubuntu@i-nmtx8glr:~$ sudo fdisk -l ( 可以看出, 有 /dev/sda, /dev/sdb/ dev/sdc 三个分区) Disk /dev/sda: 21.5 GB, 21474836480 bytes 255 heads, 63 sectors/track, 2610 cylinders, total 41943040 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x000e0afd Device Boot Start End Blocks Id System /dev/sda1 * 2048 41940991 20969472 83 Linux Disk /dev/sdb: 1073 MB, 1073741824 bytes 6 heads, 33 sectors/track, 10591 cylinders, total 2097152 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x188f989b Device Boot Start End Blocks Id System /dev/sdb1 2048 2097151 1047552 5 Extended Disk /dev/sdc: 107.4 GB, 107374182400 bytes 255 heads, 63 sectors/track, 13054 cylinders, total 209715200 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 33550336 bytes Disk identifier: 0x00000000 Disk /dev/sdc doesn't contain a valid partition table # 注意这句了没有, 它还没分区.所以,我们需要: 为它重新分区.
$ sudo fdisk /dev/sdc Command (m for help): n Partition type: p primary (1 primary, 0 extended, 3 free) e extended Select (default p): e # 选择e ,表示用extend分区. Partition number (1-4, default 2): Using default value 2 No free sectors available Command (m for help): w # 让改动生效. The partition table has been altered! Calling ioctl() to re-read partition table. Syncing disks.然后,我们 $ sudo fdisk -l , 就可以看到改动生效了:
Disk /dev/sdc: 107.4 GB, 107374182400 bytes 43 heads, 44 sectors/track, 110843 cylinders, total 209715200 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 33550336 bytes Disk identifier: 0xeb0534b0 Device Boot Start End Blocks Id System /dev/sdc1 65528 209715199 104824836 83 Linux 接下来,为它做 格式化. $ sudo mkfs.ext4 /dev/sdc1 mke2fs 1.42.9 (4-Feb-2014) Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) Stride=0 blocks, Stripe width=8191 blocks 6553600 inodes, 26206209 blocks 1310310 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=4294967296 800 block groups 32768 blocks per group, 32768 fragments per group 8192 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 4096000, 7962624, 11239424, 20480000, 23887872 Allocating group tables: done Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done
硬盘可以使用了, mount( 挂载) 它.
$ sudo mkdir /data $ sudo mount /dev/sdc1 /data $ df -kh Filesystem Size Used Avail Use% Mounted on /dev/sda1 20G 3.4G 16G 19% / ..... /dev/sdc1 99G 60M 94G 1% /data 可以看到, 这个100G的硬盘, 已经挂载到了 /data上.
最后, 修改配置文件,让系统每次启动都自动加载:
$ sudo blkid # 查看所有的设备的UUID /dev/sda1: UUID="fe5d9ef3-0382-4b4d-9057-f09962f7d00d" TYPE="ext4" /dev/sdb: LABEL="YUNIFYSWAP" UUID="b800ddd7-2e70-4b4a-b2e9-5c71ed6bff1f" TYPE="swap" /dev/sdc1: UUID="56e6983b-da6d-4063-8b49-be88768c731f" TYPE="ext4" # 修改文件, /etc/fstab , 增加这一行: UUID=56e6983b-da6d-4063-8b49-be88768c731f /data ext4 defaults,auto,_netdev 0 0