我负责的一台服务器显示驱动器已满，但比驱动器应有的大小小得多。我对 LVM 的了解不够深入，无法理解原因。我需要一些新人的帮助，因为我一直在为此绞尽脑汁（和绞尽脑汁）。
我有一个 352 GB 的逻辑卷 /dev/sdrive/shared。我的操作系统Ubuntu 14.04.01似乎只认为/dev/mapper/sdrive-shared是 126GB。我不知道我搞砸了什么或做错了什么导致这种情况，也不知道该如何修复它。下面我将列出我所知道的用于调查问题的命令的输出。不过我不知道它从哪里得到了 126GB。
有些事情对我来说似乎是错误（例如 fdisk 抱怨分区表，但 parted 显示正常），但搜索一些论坛说这是 LVM 的预期行为。同样，我的知识太薄弱，无法诊断，我正在抓住救命稻草，感谢任何帮助。
login as: itdept
[email protected]'s password:
Welcome to Ubuntu 14.04.1 LTS (GNU/Linux 3.13.0-49-generic i686)
* Documentation: https://help.ubuntu.com/
System information as of Mon Apr 27 08:45:41 EDT 2015
System load: 0.0 Processes: 109
Usage of /: 18.1% of 34.82GB Users logged in: 1
Memory usage: 3% IP address for eth0: 192.168.0.92
Swap usage: 0%
=> /srv/shared is using 100.0% of 125.87GB
Graph this data and manage this system at:
https://landscape.canonical.com/
Last login: Mon Apr 27 08:45:45 2015 from 192.168.0.84
itdept@SFTP-SVR:~$ sudo su
[sudo] password for itdept:
root@SFTP-SVR:/home/itdept# pvdisplay
--- Physical volume ---
PV Name /dev/xvdc1
VG Name sdrive
PV Size 384.00 GiB / not usable 3.00 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 98303
Free PE 8191
Allocated PE 90112
PV UUID xeWJim-n58M-hvzd-3DbA-Nlgz-d3l1-e7IiG7
root@SFTP-SVR:/home/itdept# vgdisplay
--- Volume group ---
VG Name sdrive
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 5
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 384.00 GiB
PE Size 4.00 MiB
Total PE 98303
Alloc PE / Size 90112 / 352.00 GiB
Free PE / Size 8191 / 32.00 GiB
VG UUID UsISz5-zVvV-HnQe-5szT-mgxr-qrql-tlCU3J
root@SFTP-SVR:/home/itdept# lvdisplay
--- Logical volume ---
LV Path /dev/sdrive/shared
LV Name shared
VG Name sdrive
LV UUID MoIYg0-XhWd-t931-U7Tz-5hw8-YDDr-qXUfkb
LV Write Access read/write
LV Creation host, time SFTP-SVR, 2014-09-15 18:02:18 -0400
LV Status available
# open 1
LV Size 352.00 GiB
Current LE 90112
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:0
root@SFTP-SVR:/home/itdept# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/xvda1 35G 6.4G 27G 20% /
none 4.0K 0 4.0K 0% /sys/fs/cgroup
udev 2.0G 4.0K 2.0G 1% /dev
tmpfs 404M 236K 404M 1% /run
none 5.0M 0 5.0M 0% /run/lock
none 2.0G 0 2.0G 0% /run/shm
none 100M 0 100M 0% /run/user
/dev/mapper/sdrive-shared 126G 126G 0 100% /srv/shared
192.168.0.201:/mnt/HD/HD_a2 732G 187G 546G 26% /mnt/ShareCenter
172.29.0.5:/mnt/UVB-CITRIX-01/Rdiff-Backup 8.7T 357G 8.4T 5% /mnt/RdiffBackup
root@SFTP-SVR:/home/itdept# parted -l
Model: Linux device-mapper (linear) (dm)
Disk /dev/mapper/sdrive-shared: 378GB
Sector size (logical/physical): 512B/512B
Partition Table: loop
Number Start End Size File system Flags
1 0.00B 378GB 378GB ext4
Model: Xen Virtual Block Device (xvd)
Disk /dev/xvda: 38.7GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Number Start End Size Type File system Flags
1 1049kB 38.1GB 38.1GB primary ext4
2 38.1GB 38.7GB 535MB extended
5 38.1GB 38.7GB 535MB logical linux-swap(v1)
Error: /dev/xvdb: unrecognised disk label
Model: Xen Virtual Block Device (xvd)
Disk /dev/xvdc: 550GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Number Start End Size Type File system Flags
1 1049kB 481GB 481GB primary lvm
root@SFTP-SVR:/home/itdept# fdisk -l
Disk /dev/xvda: 38.7 GB, 38654705664 bytes
255 heads, 63 sectors/track, 4699 cylinders, total 75497472 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: 0x0003ec0e
Device Boot Start End Blocks Id System
/dev/xvda1 2048 74448895 37223424 83 Linux
/dev/xvda2 74450942 75495423 522241 5 Extended
/dev/xvda5 74450944 75495423 522240 82 Linux swap / Solaris
Disk /dev/xvdc: 549.8 GB, 549755813888 bytes
64 heads, 1 sectors/track, 16777216 cylinders, total 1073741824 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: 0x1f2d154a
Device Boot Start End Blocks Id System
/dev/xvdc1 2048 939526143 469762048 8e Linux LVM
Disk /dev/xvdb: 268.4 GB, 268435456000 bytes
255 heads, 63 sectors/track, 32635 cylinders, total 524288000 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: 0x00000000
Disk /dev/xvdb doesn't contain a valid partition table
Disk /dev/mapper/sdrive-shared: 378.0 GB, 377957122048 bytes
255 heads, 63 sectors/track, 45950 cylinders, total 738197504 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: 0x00000000
Disk /dev/mapper/sdrive-shared doesn't contain a valid partition table
root@SFTP-SVR:/home/itdept# cat /etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc nodev,noexec,nosuid 0 0
# / was on /dev/xvda1 during installation
UUID=1ad70e2c-38b8-4c71-937a-36e1775ccc10 / ext4 errors=remount-ro 0 1
# swap was on /dev/xvda5 during installation
UUID=e4d98211-c0f2-4b97-ab88-28e52e47b5f1 none swap sw 0 0
# ShareCenter NFS
192.168.0.201:/mnt/HD/HD_a2 /mnt/ShareCenter nfs defaults,rw,auto 0 0
# RdiffBackup on SAM-SD NFS for Backups
172.29.0.5:/mnt/UVB-CITRIX-01/Rdiff-Backup /mnt/RdiffBackup nfs defaults,auto,rw 0 0
# shared for sdrive (LVM, ext4)
/dev/sdrive/shared /srv/shared ext4 rw,noatime,auto 0 0
答案1
这是扩展 lv 但不扩展其上的文件系统时的样子。在 lv 上获得所需大小后，下一步是扩展其上的文件系统。这可以使用 来执行resize2fs /dev/sdrive/shared。