我有一台 1and1 提供的专用服务器。我开始将网站迁移到该服务器，却发现磁盘空间不足。我不得不清除备份才能继续迁移我的网站。我觉得这很奇怪，因为服务器自带 4T 的磁盘空间。
通过 ssh 访问系统时，我看到 1and1 的以下设置：
#vgdisplay
--- Volume group ---
VG Name vg00
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 8
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 3
Open LV 3
Max PV 0
Cur PV 1
Act PV 1
VG Size <54.00 GiB
PE Size 4.00 MiB
Total PE 13823
Alloc PE / Size 11520 / 45.00 GiB
Free PE / Size 2303 / <9.00 GiB
VG UUID CmLv2a-xKAn-cFQQ-K4TU-f5y2-UK8K-Uv1PO9
--- Volume group ---
VG Name hdd
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 2
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 1
Act PV 1
VG Size <3.58 TiB
PE Size 4.00 MiB
Total PE 938308
Alloc PE / Size 1024 / 4.00 GiB
Free PE / Size 937284 / <3.58 TiB
VG UUID Pv2xfH-zkE1-hgH0-dOzZ-FgKp-IobS-5C2zea
Also #pvscan reveals this:
PV /dev/sda3 VG vg00 lvm2 [<54.00 GiB / <9.00 GiB free]
PV /dev/sdb1 VG hdd lvm2 [<3.58 TiB / <3.58 TiB free]
有人能告诉我将未使用的可用空间放入根卷组的最佳过程吗？我搜索过并看到了很多不同的答案。因为我已经开始迁移一些网站。我不能承受服务器损坏的后果，否则我会像往常一样摆弄、损坏并学习。
只是想到了没有提到这是硬件 Raid 5
更新以下问题：
#pvdisplay
--- Physical volume ---
PV Name /dev/sda3
VG Name vg00
PV Size <54.00 GiB / not usable 2.81 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 13823
Free PE 767
Allocated PE 13056
PV UUID 6J06IE-52et-s8aV-bXk0-alud-0N1v-NEwHHr
--- Physical volume ---
PV Name /dev/sdb1
VG Name hdd
PV Size <3.58 TiB / not usable <3.78 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 938308
Free PE 937284
Allocated PE 1024
PV UUID bGlBQQ-gnmF-gOav-VTfj-np5R-sAKs-YNxemq
我想将 /dev/sdb1 中的物理卷减少 2 或 3TB，并将 /dev/sda3 增加相同的量。可以这样做吗？如果可以，我需要遵循什么流程？
如果没有，我注意到回复中提到“将网站迁移到硬盘”，我必须遵循什么流程，以及这样做有什么后果？
Logical Volumes:
--- Logical volume ---
LV Path /dev/vg00/usr
LV Name usr
VG Name vg00
LV UUID sRvgQ3-W80K-AJQD-lZid-fqF3-1KTY-JH2Ul0
LV Write Access read/write
LV Creation host, time ,
LV Status available
# open 1
LV Size 15.00 GiB
Current LE 3840
Segments 2
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:0
--- Logical volume ---
LV Path /dev/vg00/var
LV Name var
VG Name vg00
LV UUID xWSCRG-vBPH-JLha-yJ8X-3zMP-WgRG-AOoJqO
LV Write Access read/write
LV Creation host, time ,
LV Status available
# open 1
LV Size 31.00 GiB
Current LE 7936
Segments 3
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:1
--- Logical volume ---
LV Path /dev/vg00/home
LV Name home
VG Name vg00
LV UUID 2foQrE-Wy3C-Ig1Z-zIDy-tTFQ-YyO5-ayHBZl
LV Write Access read/write
LV Creation host, time ,
LV Status available
# open 1
LV Size 5.00 GiB
Current LE 1280
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:2
--- Logical volume ---
LV Path /dev/hdd/data
LV Name data
VG Name hdd
LV UUID GwJgTL-LC8r-jn0a-yQ5H-mTX3-dARL-Xz0eOU
LV Write Access read/write
LV Creation host, time ,
LV Status available
# open 1
LV Size 4.00 GiB
Current LE 1024
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:3
我将 /dev/vg00/var 上的 LV 增加了 100%（这是存储网站的地方）。但是一旦我继续迁移更多网站，它将很快被用完！
这也可能有帮助。这是从运行 mount 命令中删除的附加行：
/dev/sda1 on / type ext3 (rw,noatime,data=ordered)
/dev/mapper/vg00-usr on /usr type ext4 (rw,noatime,data=ordered)
/dev/mapper/hdd-data on /data type ext4 (rw,noatime,quota,usrquota,data=ordered)
/dev/mapper/vg00-home on /home type ext4 (rw,noatime,quota,usrquota,data=ordered)
/dev/mapper/vg00-var on /var type ext4 (rw,noatime,quota,usrquota,data=ordered)
非常感谢您的回复！
答案1
我假设 /data 是您要迁移的数据所在的位置。底层卷位于“hdd”卷组上，该卷组的大小超过 3.5 TB。为什么不将其大小设置为足以容纳您要迁移的数据的大小？您应该能够在源上测量它并相应地调整 /dev/hdd/data。