我需要扩大我的 / (根)分区,我的 /home 分区上有很多空间,我该怎么做?该驱动器已使用 LUKS 加密。
我的系统是Fedora 20。
我还有另一个话题这里其中提到了 system-config-lvm 但这似乎是一个过时的工具,因为它未安装或位于存储库中。 Gparted 不起作用,因为它不支持 LUKS 加密。
这是:
~]$ sudo fdisk -l
Disk /dev/sda: 465.8 GiB, 500107862016 bytes, 976773168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 7AE6E531-9898-4C7C-8C35-41B4FDB9374A
Device Start End Size Type
/dev/sda1 2048 411647 200M EFI System
/dev/sda2 411648 1435647 500M Microsoft basic data
/dev/sda3 1435648 976773119 465.1G Microsoft basic data
Disk /dev/mapper/luks-e69b0b4c-a8e0-425f-988d-8c635729503b: 465.1 GiB, 499370688512 bytes, 975333376 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/mapper/fedora_hostname-swap: 3.8 GiB, 4043309056 bytes, 7897088 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/mapper/fedora_hostname-root: 50 GiB, 53687091200 bytes, 104857600 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/mapper/luks-b7af1bce-82c4-4921-aac1-bce701e30256: 50 GiB, 53684994048 bytes, 104853504 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/mapper/fedora_hostname-home: 411.3 GiB, 441639239680 bytes, 862576640 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
这是:
~]$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/dm-3 50G 45G 2.0G 96% /
devtmpfs 1.9G 0 1.9G 0% /dev
tmpfs 1.9G 80K 1.9G 1% /dev/shm
tmpfs 1.9G 9.0M 1.9G 1% /run
tmpfs 1.9G 0 1.9G 0% /sys/fs/cgroup
tmpfs 1.9G 20K 1.9G 1% /tmp
/dev/sda2 477M 131M 317M 30% /boot
/dev/sda1 200M 9.6M 191M 5% /boot/efi
/dev/mapper/fedora_hostname-home 405G 202G 183G 53% /home
这是:
]$ sudo lvdisplay
--- Logical volume ---
LV Path /dev/fedora_hostname/swap
LV Name swap
VG Name fedora_hostname
LV UUID qQQRVR-toXX-J0M7-lTH5-d8Lr-AUq3-EHJ6A4
LV Write Access read/write
LV Creation host, time hostname.lan, 2014-03-24 15:51:10 +0000
LV Status available
# open 2
LV Size 3.77 GiB
Current LE 964
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:1
--- Logical volume ---
LV Path /dev/fedora_hostname/home
LV Name home
VG Name fedora_hostname
LV UUID In2lRz-16ul-VhH5-SQOE-yqlt-tMB3-5JM7ea
LV Write Access read/write
LV Creation host, time hostname.lan, 2014-03-24 15:51:10 +0000
LV Status available
# open 1
LV Size 411.31 GiB
Current LE 105295
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:4
--- Logical volume ---
LV Path /dev/fedora_hostname/root
LV Name root
VG Name fedora_hostname
LV UUID bBWzcC-nhhd-s8km-MMGi-uGQ0-8yBv-HClQgp
LV Write Access read/write
LV Creation host, time hostname.lan, 2014-03-24 15:51:16 +0000
LV Status available
# open 1
LV Size 50.00 GiB
Current LE 12800
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:2
答案1
答案就在这线....
摘录:
因此,步骤如下:
缩小/home“文件系统”。 (例如,如果是 ext4,则应使用 resize2fs 调整其大小)。
使用 lvreduce 缩小 /home LVM 分区 (/dev/mapper/fedora_hostname-home) 大小,使其完全包含 /home 缩小的文件系统
如果收缩后的文件系统小于 /home LVM 分区,您可以再次调整文件系统的大小以完全填满 LVM 逻辑卷。我通常使用这种方法,这样我就不需要精确计算尺寸了! :P
(完成上述每个步骤后,您可以挂载 /home 来查看它是否正确挂载以及数据是否存在。如果没有(例如由于参数错误),您可以恢复该有问题的步骤)。
扩大/分区的步骤如下:
扩大/LVM分区(/dev/mapper/fedora_hostname-root)以填充可用空间(使用lvextend)
扩大 / LUKS 分区以填充 /dev/mapper/fedora_hostname-root LVM 分区(使用 cryptsetup resize)
- 放大 / 文件系统以填充 / LUKS 分区(例如,如果是 ext2/3/4,则使用 resize2fs)