lvm - 调整大小2fs : Bad magic number in super-block while trying to open

Question

我正在尝试调整 CentOS7 上的逻辑卷大小，但遇到以下错误:

resize2fs 1.42.9 (28-Dec-2013)
resize2fs: Bad magic number in super-block while trying to open /dev/mapper/centos-root
Couldn't find valid filesystem superblock.

我尝试添加新分区(使用 fdisk)并使用 vgextend 扩展卷组，然后调整大小。使用 lvextend 调整逻辑卷大小工作正常，但在 resize2fs 上失败。

我还尝试删除现有分区(使用 fdisk)并使用更大的结束 block 重新创建它，然后使用 lvm pvresize 调整物理卷的大小，然后使用 lvm lvresize 调整逻辑卷的大小。到目前为止，一切都运行良好。

当我尝试使用 resize2fs 时，使用上述两种方法，我收到了完全相同的错误。

希望以下内容能够提供一些启发。

fdisk -l

[root@server~]# fdisk -l

Disk /dev/xvda: 32.2 GB, 32212254720 bytes, 62914560 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 label type: dos
Disk identifier: 0x0009323a

Device Boot      Start         End      Blocks   Id  System
/dev/xvda1   *        2048     1026047      512000   83  Linux
/dev/xvda2         1026048    41943039    20458496   8e  Linux LVM
/dev/xvda3        41943040    62914559    10485760   8e  Linux LVM

Disk /dev/mapper/centos-swap: 2147 MB, 2147483648 bytes, 4194304 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 /dev/mapper/centos-root: 29.5 GB, 29532094464 bytes, 57679872 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

pv显示

[root@server ~]# pvdisplay
--- Physical volume ---
PV Name               /dev/xvda2
VG Name               centos
PV Size               19.51 GiB / not usable 2.00 MiB
Allocatable           yes (but full)
PE Size               4.00 MiB
Total PE              4994
Free PE               0
Allocated PE          4994
PV UUID               7bJOPh-OUK0-dGAs-2yqL-CAsV-TZeL-HfYzCt

--- Physical volume ---
PV Name               /dev/xvda3
VG Name               centos
PV Size               10.00 GiB / not usable 4.00 MiB
Allocatable           yes (but full)
PE Size               4.00 MiB
Total PE              2559
Free PE               0
Allocated PE          2559
PV UUID               p0IClg-5mrh-5WlL-eJ1v-t6Tm-flVJ-gsJOK6

vg显示

[root@server ~]# vgdisplay
--- Volume group ---
VG Name               centos
System ID
Format                lvm2
Metadata Areas        2
Metadata Sequence No  6
VG Access             read/write
VG Status             resizable
MAX LV                0
Cur LV                2
Open LV               2
Max PV                0
Cur PV                2
Act PV                2
VG Size               29.50 GiB
PE Size               4.00 MiB
Total PE              7553
Alloc PE / Size       7553 / 29.50 GiB
Free  PE / Size       0 / 0
VG UUID               FD7k1M-koJt-2veW-sizL-Srsq-Y6zt-GcCfz6

lv显示

[root@server ~]# lvdisplay
--- Logical volume ---
LV Path                /dev/centos/swap
LV Name                swap
VG Name                centos
LV UUID                KyokrR-NGsp-6jVA-P92S-QE3X-hvdp-WAeACd
LV Write Access        read/write
LV Creation host, time localhost, 2014-10-09 08:28:42 +0100
LV Status              available
# open                 2
LV Size                2.00 GiB
Current LE             512
Segments               1
Allocation             inherit
Read ahead sectors     auto
- currently set to     8192
Block device           253:0

--- Logical volume ---
LV Path                /dev/centos/root
LV Name                root
VG Name                centos
LV UUID                ugCOcT-sTDK-M8EV-3InM-hjIg-2nwS-KeAOnq
LV Write Access        read/write
LV Creation host, time localhost, 2014-10-09 08:28:42 +0100
LV Status              available
# open                 1
LV Size                27.50 GiB
Current LE             7041
Segments               2
Allocation             inherit
Read ahead sectors     auto
- currently set to     8192
Block device           253:1

我可能做了一些愚蠢的事情，所以任何帮助将不胜感激!

Answer 1

经过一番尝试和错误...正如可能的答案中提到的，结果需要 xfs_growfs 而不是 resize2fs。

CentOS 7，

fdisk /dev/xvda

新建主分区，类型设置为linux lvm。

n
p
3
t
8e
w

创建新的主卷并将卷组扩展到新卷。

partprobe
pvcreate /dev/xvda3
vgextend /dev/centos /dev/xvda3

检查物理卷的可用空间，用可用空间扩展逻辑卷。

vgdisplay -v
lvextend -l+288 /dev/centos/root

最后执行在线调整大小来调整逻辑卷的大小，然后检查可用空间。

xfs_growfs /dev/centos/root
df -h