磁盘上的空闲 space 不可用

Question

我像往常一样使用 parted 来扩展我的磁盘，它似乎成功地显示了新的 140GB 磁盘。

Model: VMware Virtual disk (scsi) Disk /dev/sda: 140GB Sector size (logical/physical): 512B/512B Partition Table: msdos Disk Flags:

Number  Start   End     Size    Type     File system  Flags  1      1049kB  1075MB  1074MB  primary  xfs          boot  2      1075MB  140GB   139GB   primary               lvm

(parted)

当我运行 pvresize 它说它是成功的并且 pvdisplay 显示：

# pvdisplay                                                     --- Physical volume ---
  PV Name               /dev/sda2
  VG Name               rhel
  PV Size               <129.00 GiB / not usable 2.00 MiB
  Allocatable           yes (but full)
  PE Size               4.00 MiB
  Total PE              33023
  Free PE               0
  Allocated PE          33023
  PV UUID               Rqtlv3-Hjdi-0DR6-I0Qs-gysl-SBSL-HdoW7s

所以我看到物理卷确实扩展了它的大小。我运行 lvextend 然后检查它显示的逻辑卷：

  --- Logical volume ---
  LV Path                /dev/rhel/swap
  LV Name                swap
  VG Name                rhel
  LV UUID                HeW74s-F3v8-ca4a-qZlN-12vO-ID2L-tpQCZk
  LV Write Access        read/write
  LV Creation host, time localhost, 2019-04-09 12:07:26 -0400
  LV Status              available
  # open                 2
  LV Size                <3.88 GiB
  Current LE             992
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     8192
  Block device           253:1

  --- Logical volume ---
  LV Path                /dev/rhel/home
  LV Name                home
  VG Name                rhel
  LV UUID                03H6z4-RMWH-RYRV-5v9T-i8Vl-SVPG-z5CaU7
  LV Write Access        read/write
  LV Creation host, time localhost, 2019-04-09 12:07:27 -0400
  LV Status              available
  # open                 1
  LV Size                <25.12 GiB
  Current LE             6430
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     8192
  Block device           253:2

  --- Logical volume ---
  LV Path                /dev/rhel/root
  LV Name                root
  VG Name                rhel
  LV UUID                QlDfBH-tFRS-sIPk-d169-mTRV-FgXe-LkCdBC
  LV Write Access        read/write
  LV Creation host, time localhost, 2019-04-09 12:07:27 -0400
  LV Status              available
  # open                 1
  LV Size                100.00 GiB
  Current LE             25601
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     8192
  Block device           253:0

我运行vgdisplay确认：

# vgdisplay
  --- Volume group ---
  VG Name               rhel
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  21
  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               <129.00 GiB
  PE Size               4.00 MiB
  Total PE              33023
  Alloc PE / Size       33023 / <129.00 GiB
  Free  PE / Size       0 / 0
  VG UUID               XmxEl2-K8LQ-3095-V2Z1-quSv-vDx4-QXonOU

所有大小都显示 129.00GB 为什么当我运行 df -h 我收到：

# df -h
Filesystem             Size  Used Avail Use% Mounted on
devtmpfs               1.9G     0  1.9G   0% /dev
tmpfs                  1.9G     0  1.9G   0% /dev/shm
tmpfs                  1.9G  8.9M  1.9G   1% /run
tmpfs                  1.9G     0  1.9G   0% /sys/fs/cgroup
/dev/mapper/rhel-root   50G   45G  5.5G  90% /
/dev/sda1             1014M  191M  824M  19% /boot
/dev/mapper/rhel-home   26G  7.2G   18G  29% /home
tmpfs                  379M     0  379M   0% /run/user/1004
tmpfs                  379M     0  379M   0% /run/user/0

我运行 lvextend 扩展rhel/root 它仍然显示50G。我还注意到免费的space中的none其实是可以用的。我所做的与我通常扩展磁盘并增加 lv 上的 space 没有什么不同。我重新尝试了这个，结果相同。我不能把磁盘吹走，因为这里有文件。有什么我想念的吗？

Answer 1

您需要调整 FS 大小。对于分机：

resize2fs /dev/mapper/rhel-root

对于 xfs

xfs_growfs /

或

xfs_growfs /dev/mapper/rhel-root

扩展分区后

磁盘上的空闲 space 不可用

Free space on disk is not available

linux

command-line

rhel