请问如何取得挂载的另一个2T硬盘的权限？

[znzjzz]

ubuntu-kylin@ubuntu-kylin:~$ pvdisplay
WARNING: Running as a non-root user. Functionality may be unavailable.
/run/lvm/lvmetad.socket: connect failed: 权限不够
WARNING: Failed to connect to lvmetad. Falling back to internal scanning.
/run/lock/lvm/P_global:aux: open failed: 权限不够
Unable to obtain global lock.
ubuntu-kylin@ubuntu-kylin:~$ vgdisplay
WARNING: Running as a non-root user. Functionality may be unavailable.
/run/lvm/lvmetad.socket: connect failed: 权限不够
WARNING: Failed to connect to lvmetad. Falling back to internal scanning.
/dev/mapper/control: open failed: 权限不够
Failure to communicate with kernel device-mapper driver.
Incompatible libdevmapper (unknown version) and kernel driver (unknown version).
ubuntu-kylin@ubuntu-kylin:~$ lvdisplay
WARNING: Running as a non-root user. Functionality may be unavailable.
/run/lvm/lvmetad.socket: connect failed: 权限不够
WARNING: Failed to connect to lvmetad. Falling back to internal scanning.
/dev/mapper/control: open failed: 权限不够
Failure to communicate with kernel device-mapper driver.
Incompatible libdevmapper (unknown version) and kernel driver (unknown version).

[znzjzz]

接下来咋办呢？poloshiao

[znzjzz]

还有办法吗？为什么那几个重复打帖子右下角没有叉叉呢？奇怪

[poloshiao]

加 sudo 使用 root 權限 試試
1. 把下面指令 複製 貼進終端機 執行
1-1. sudo pvdisplay
1-2. sudo vgdisplay
1-3. sudo lvdisplay
把指令及結果全部直接 選取/複製/貼上來

<因事外出 18:00 以後 繼續>

[znzjzz]

感谢poloshiao.。我试试看，你先忙，

[znzjzz]

ubuntu-kylin@ubuntu-kylin:~$ sudo pvdisplay
--- Physical volume ---
PV Name /dev/sda2
VG Name ubuntu-vg
PV Size 1.82 TiB / not usable 4.00 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 476870
Free PE 33
Allocated PE 476837
PV UUID YfKEQw-N7Tx-JCxq-ON30-CaV4-01Go-eQE4yw

ubuntu-kylin@ubuntu-kylin:~$ sudo vgdisplay
--- Volume group ---
VG Name ubuntu-vg
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 3
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 1
Max PV 0
Cur PV 1
Act PV 1
VG Size 1.82 TiB
PE Size 4.00 MiB
Total PE 476870
Alloc PE / Size 476837 / 1.82 TiB
Free PE / Size 33 / 132.00 MiB
VG UUID mrRL8q-51BT-75yg-ogHt-asp5-EWvn-xwCzcv

ubuntu-kylin@ubuntu-kylin:~$ sudo lvdisplay
--- Logical volume ---
LV Path /dev/ubuntu-vg/root
LV Name root
VG Name ubuntu-vg
LV UUID H5HErE-6Ez7-jOJO-7DqJ-LKXs-37M9-rPLFHK
LV Write Access read/write
LV Creation host, time ubuntu, 2015-01-08 18:19:37 +0000
LV Status available
# open 1
LV Size 1.81 TiB
Current LE 474813
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:0

--- Logical volume ---
LV Path /dev/ubuntu-vg/swap_1
LV Name swap_1
VG Name ubuntu-vg
LV UUID t9dtBr-dkZs-stBz-dfE1-GRbN-j67k-3vI1iw
LV Write Access read/write
LV Creation host, time ubuntu, 2015-01-08 18:19:37 +0000
LV Status available
# open 0
LV Size 7.91 GiB
Current LE 2024
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:1

[znzjzz]

ubuntu-kylin@ubuntu-kylin:~$ sudo pvdisplay
--- Physical volume ---
PV Name /dev/sda2
VG Name ubuntu-vg
PV Size 1.82 TiB / not usable 4.00 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 476870
Free PE 33
Allocated PE 476837
PV UUID YfKEQw-N7Tx-JCxq-ON30-CaV4-01Go-eQE4yw

ubuntu-kylin@ubuntu-kylin:~$ sudo vgdisplay
--- Volume group ---
VG Name ubuntu-vg
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 3
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 1
Max PV 0
Cur PV 1
Act PV 1
VG Size 1.82 TiB
PE Size 4.00 MiB
Total PE 476870
Alloc PE / Size 476837 / 1.82 TiB
Free PE / Size 33 / 132.00 MiB
VG UUID mrRL8q-51BT-75yg-ogHt-asp5-EWvn-xwCzcv

ubuntu-kylin@ubuntu-kylin:~$ sudo lvdisplay
--- Logical volume ---
LV Path /dev/ubuntu-vg/root
LV Name root
VG Name ubuntu-vg
LV UUID H5HErE-6Ez7-jOJO-7DqJ-LKXs-37M9-rPLFHK
LV Write Access read/write
LV Creation host, time ubuntu, 2015-01-08 18:19:37 +0000
LV Status available
# open 1
LV Size 1.81 TiB
Current LE 474813
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:0

--- Logical volume ---
LV Path /dev/ubuntu-vg/swap_1
LV Name swap_1
VG Name ubuntu-vg
LV UUID t9dtBr-dkZs-stBz-dfE1-GRbN-j67k-3vI1iw
LV Write Access read/write
LV Creation host, time ubuntu, 2015-01-08 18:19:37 +0000
LV Status available
# open 0
LV Size 7.91 GiB
Current LE 2024
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:1

[znzjzz]

又重复提交回复了，还删不掉，是不是这个U盘LiveCD的原因，

[znzjzz]

好难啊，哪里想到当时一时手欠，唉唉！早之知今日，何必当初

[poloshiao]

sudo lvdisplay
--- Logical volume ---
LV Path /dev/ubuntu-vg/root

1. 把下面指令 複製 貼進終端機 執行
1-1. sudo mount /dev/ubuntu-vg/root /mnt # 注意 空格
1-2. sudo ls -al /mnt
把 1-2. 指令及結果直接 選取/複製 貼上來

2. 參閱
https://superuser.com/a/116631

[poloshiao]

好难啊

1. LVM 有它好用的一面

2. 簡單說明

sudo vgdisplay
--- Volume group ---
VG Name ubuntu-vg

Volume group 取名為 ubuntu-vg

sudo pvdisplay
--- Physical volume ---
PV Name /dev/sda2

3. ubuntu-vg 的硬件組成元素是 /dev/sda2 (硬盤分割區)

sudo lvdisplay
--- Logical volume ---
LV Path /dev/ubuntu-vg/root
LV Name root
VG Name ubuntu-vg
--- Logical volume ---
LV Path /dev/ubuntu-vg/swap_1
LV Name swap_1
VG Name ubuntu-vg

4. 在 ubuntu-vg 分割成兩個邏輯分割區
/dev/ubuntu-vg/root
/dev/ubuntu-vg/swap_1

sudo mount /dev/ubuntu-vg/root /mnt

5. 針對上面的邏輯分割區 掛載

sudo ls -al /mnt

6. 掛載成功 表示能夠存取該掛載目錄的資料
6-1. 例如 可以複製出來存放在另一個安全的地方

[znzjzz]

ubuntu-kylin@ubuntu-kylin:~$ sudo mount /dev/ubuntu-vg/root /mnt #
ubuntu-kylin@ubuntu-kylin:~$ sudo ls -al /mnt
总用量 116
drwxr-xr-x 23 root root 4096 1月 8 2015 .
drwxr-xr-x 1 root root 240 5月 1 03:04 ..
drwxr-xr-x 2 root root 4096 1月 8 2015 bin
drwxrwxr-x 2 root root 4096 1月 8 2015 boot
drwxrwxr-x 2 root root 4096 1月 8 2015 cdrom
drwxr-xr-x 4 root root 4096 10月 22 2014 dev
drwxr-xr-x 135 root root 12288 4月 28 18:26 etc
drwxr-xr-x 3 root root 4096 1月 8 2015 home
lrwxrwxrwx 1 root root 33 1月 8 2015 initrd.img -> boot/initrd.img-3.16.0-28-generic
lrwxrwxrwx 1 root root 33 1月 8 2015 initrd.img.old -> boot/initrd.img-3.16.0-23-generic
drwxr-xr-x 25 root root 4096 1月 8 2015 lib
drwxr-xr-x 2 root root 4096 1月 8 2015 lib64
drwx------ 2 root root 16384 1月 8 2015 lost+found
drwxr-xr-x 3 root root 4096 1月 8 2015 media
drwxr-xr-x 2 root root 4096 10月 16 2014 mnt
drwxr-xr-x 2 root root 4096 10月 22 2014 opt
drwxr-xr-x 2 root root 4096 10月 16 2014 proc
drwx------ 2 root root 4096 10月 22 2014 root
drwxr-xr-x 12 root root 4096 10月 22 2014 run
drwxr-xr-x 2 root root 12288 1月 8 2015 sbin
drwxr-xr-x 2 root root 4096 10月 22 2014 srv
drwxr-xr-x 2 root root 4096 8月 26 2014 sys
drwxrwxrwt 4 root root 4096 4月 28 18:23 tmp
drwxr-xr-x 10 root root 4096 10月 22 2014 usr
drwxr-xr-x 13 root root 4096 10月 22 2014 var
lrwxrwxrwx 1 root root 30 1月 8 2015 vmlinuz -> boot/vmlinuz-3.16.0-28-generic
lrwxrwxrwx 1 root root 30 1月 8 2015 vmlinuz.old -> boot/vmlinuz-3.16.0-23-generic

[znzjzz]

兄弟，容我先吃个饭去

[poloshiao]

我的一块2T硬盘引导坏了（14.10,64位的），始终没修好

sudo ls -al /mnt
总用量 116
drwxr-xr-x 23 root root 4096 1月 8 2015 .
drwxr-xr-x 1 root root 240 5月 1 03:04 ..
drwxr-xr-x 2 root root 4096 1月 8 2015 bin
... 中間省略
drwxr-xr-x 13 root root 4096 10月 22 2014 var
lrwxrwxrwx 1 root root 30 1月 8 2015 vmlinuz -> boot/vmlinuz-3.16.0-28-generic
lrwxrwxrwx 1 root root 30 1月 8 2015 vmlinuz.old -> boot/vmlinuz-3.16.0-23-generic

1. 恭喜你 沒壞

2. 是否能成功複製出來保存 還要看看 有沒有 其它瑕疵

[znzjzz]

谢谢你的好消息。