因此，我在 RAID5 中运行 3x 4TB（ST4000VN008-2DR166）已有一段时间了，并且想通过添加第四个 HDD 来扩展它。迁移成功，RAID 控制器（LSI MegaRAID SAS 9261-8i）显示可用存储空间为 10.913TB：
user@server:~ # storcli64 /c0 show
..
TOPOLOGY :
----------------------------------------------------------------------------
DG Arr Row EID:Slot DID Type State BT Size PDC PI SED DS3 FSpace TR
----------------------------------------------------------------------------
0 - - - - RAID5 Optl Y 10.913 TB dflt N N dflt N N
0 0 - - - RAID5 Optl Y 10.913 TB dflt N N dflt N N
0 0 0 252:0 27 DRIVE Onln N 3.637 TB dflt N N dflt - N
0 0 1 252:1 26 DRIVE Onln N 3.637 TB dflt N N dflt - N
0 0 2 252:2 25 DRIVE Onln N 3.637 TB dflt N N dflt - N
0 0 3 252:3 24 DRIVE Onln N 3.637 TB dflt N N dflt - N
----------------------------------------------------------------------------
VD LIST :
----------------------------------------------------------------------
DG/VD TYPE State Access Consist Cache Cac sCC Size Name
----------------------------------------------------------------------
0/0 RAID5 Optl RW No NRWBD - ON 10.913 TB seagate-raid
----------------------------------------------------------------------
PD LIST :
---------------------------------------------------------------------------------
EID:Slt DID State DG Size Intf Med SED PI SeSz Model Sp Type
---------------------------------------------------------------------------------
252:0 27 Onln 0 3.637 TB SATA HDD N N 512B ST4000VN008-2DR166 U -
252:1 26 Onln 0 3.637 TB SATA HDD N N 512B ST4000VN008-2DR166 U -
252:2 25 Onln 0 3.637 TB SATA HDD N N 512B ST4000VN008-2DR166 U -
252:3 24 Onln 0 3.637 TB SATA HDD N N 512B ST4000VN008-2DR166 U -
252:4 28 UGood - 1.817 TB SATA HDD N N 512B WDC WD2003FYYS-02W0B1 D -
252:5 29 UGood - 1.817 TB SATA HDD N N 512B WDC WD2003FYYS-02W0B1 D -
---------------------------------------------------------------------------------
user@server:~ # storcli64 /c0/v0 show migrate
VD Operation Status :
-----------------------------------------------------------
VD Operation Progress% Status Estimated Time Left
-----------------------------------------------------------
0 Migrate - Not in progress -
-----------------------------------------------------------
fdisk -l显示/dev/sda总共有 10.9 TiB，但seagate--raid-vm--101--disk--0仍然为 7.3 TiB：
Disk /dev/sda: 10.9 TiB, 11999999164416 bytes, 23437498368 sectors
..
Device Start End Sectors Size Type
/dev/sda1 2048 15624998878 15624996831 7.3T Linux filesystem
Disk /dev/mapper/seagate--raid-vm--101--disk--0: 7.3 TiB, 7999913459712 bytes, 15624830976 sectors
..
Device Start End Sectors Size Type
/dev/mapper/seagate--raid-vm--101--disk--0-part1 2048 15624830942 15624828895 7.3T Linux filesystem
数据中心 > 服务器 > 磁盘 > LVM：
我尝试seagate-raid使用 进行扩展qm resize 101 scsi1 +3636G，但 Proxmox 本身无法识别大小变化。那么如何安全地扩展虚拟磁盘而不丢失数据呢？
user@server:~ # lvdisplay
--- Logical volume ---
LV Path /dev/seagate-raid/vm-101-disk-0
LV Name vm-101-disk-0
VG Name seagate-raid
LV UUID DKJ4bA-396x-QyWq-79qE-JZ7A-cIZh-uLKXow
LV Write Access read/write
LV Creation host, time ariola, 2019-02-25 23:02:39 +0100
LV Status available
# open 1
LV Size 7.28 TiB
Current LE 1907347
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:2
user@server:~ # pvdisplay
--- Physical volume ---
PV Name /dev/sda1
VG Name seagate-raid
PV Size 7.28 TiB / not usable 4.98 MiB
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 1907347
Free PE 0
Allocated PE 1907347
PV UUID 2UG4tr-Ug3O-HKKA-P5tp-yyYx-9Sio-k43bOM
user@server:~ # pvs
PV VG Fmt Attr PSize PFree
/dev/sda1 seagate-raid lvm2 a-- 7.28t 0
/dev/sdb3 pve lvm2 a-- 111.54g 13.88g
user@server:~ # vgs
VG #PV #LV #SN Attr VSize VFree
pve 1 5 0 wz--n- 111.54g 13.88g
seagate-raid 1 1 0 wz--n- 7.28t 0
user@server:~ # lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
data pve twi-aotz-- 59.91g 91.39 3.92
root pve -wi-ao---- 27.75g
swap pve -wi-ao---- 8.00g
vm-100-disk-1 pve Vwi-a-tz-- 20.00g data 91.74
vm-101-disk-1 pve Vwi-aotz-- 40.00g data 91.01
vm-101-disk-0 seagate-raid -wi-ao---- 7.28t
答案1
user@server:~ # pvs
PV VG Fmt Attr PSize PFree
/dev/sda1 seagate-raid lvm2 a-- 7.28t
使用 之类的工具扩展此分区parted resizepart。应该能够将结尾设置为 100% parted。
扩展 PVpvresize /dev/sda1
使用以下方法扩展 LVlvextend --resizefs
Linux LVM 不需要 PV 上的分区。下次创建新的 PV 或新的 VG 时，请考虑为其分配整个磁盘，例如 /dev/sda。