如何在Debian中调整根分区的大小？

我试图在根分区中添加空间，但实际上不确定是否最安全的方法。我已阅读此线程，是否可以在不卸载和重新安装Linux（或丢失数据）的情况下调整根分区的大小？ 但我认为信息与我的系统不符。

任何帮助将不胜感激。另外，在该帖子中，F1234K要求提供有关阅读方面的建议以学习这些知识，但是没有人回答。我也将对有关该主题的一些学习材料非常感兴趣。

谢谢！

编辑：我应该补充一点，我的目标是从sdb6中获取20 GB并将其放入sdb1中。sdb6是sdb2的逻辑卷。

须藤fdisk -l

Disk /dev/sdb: 750.2 GB, 750156374016 bytes
255 heads, 63 sectors/track, 91201 cylinders, total 1465149168 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: 0x0000babf   
Device     Boot      Start         End      Blocks   Id  System
/dev/sdb1   *        2048    19531775     9764864   83  Linux
/dev/sdb2        19533822  1465147391   722806785    5  Extended
/dev/sdb5        19533824    76765183    28615680   82  Linux swap / Solaris
/dev/sdb6        76767232  1465147391   694190080   83  Linux

Disk /dev/sda: 1000.2 GB, 1000200658432 bytes
255 heads, 63 sectors/track, 121600 cylinders, total 1953516911 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: 0x000a9997

Device Boot      Start         End      Blocks   Id  System
/dev/sda1            2048  1953515519   976756736   83  Linux

Disk /dev/sdc: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 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: 0x927a1713

Device Boot      Start         End      Blocks   Id  System
/dev/sdc1   *        2048      206847      102400    7  HPFS/NTFS/exFAT
/dev/sdc2          206848   976771071   488282112    7  HPFS/NTFS/exFAT

WARNING: GPT (GUID Partition Table) detected on '/dev/sdd'! The util fdisk doesn't support GPT. Use GNU Parted.


Disk /dev/sdd: 999.5 GB, 999501594624 bytes
256 heads, 63 sectors/track, 121041 cylinders, total 1952151552 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: 0x809da6bc

Device Boot      Start         End      Blocks   Id  System
/dev/sdd1               1  4294967295  2147483647+  ee  GPT

df -h

Filesystem                                              Size  Used Avail Use% Mounted on
rootfs                                                  9.2G  8.8G     0 100% /
udev                                                     10M     0   10M   0% /dev
tmpfs                                                   2.4G  896K  2.4G   1% /run
/dev/disk/by-uuid/d7968f08-4108-4382-a585-0b4a3850ec63  9.2G  8.8G     0 100% /
tmpfs                                                   5.0M     0  5.0M   0% /run/lock
tmpfs                                                    11G  692K   11G   1% /run/shm
/dev/sdb6                                               652G  581G   39G  94% /home
/dev/sr0                                                4.4G  4.4G     0 100% /media/cdrom0
/dev/sr1                                                354M  354M     0 100% /media/cdrom1
/dev/sdd2                                               931G  759G  173G  82% /media/zacharydimaria

安装

sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
udev on /dev type devtmpfs (rw,relatime,size=10240k,nr_inodes=3091362,mode=755)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /run type tmpfs (rw,nosuid,noexec,relatime,size=2474360k,mode=755)
/dev/disk/by-uuid/d7968f08-4108-4382-a585-0b4a3850ec63 on / type ext4 (rw,relatime,errors=remount-ro,user_xattr,barrier=1,data=ordered)
tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k)
tmpfs on /run/shm type tmpfs (rw,nosuid,nodev,noexec,relatime,size=10671840k)
/dev/sdb6 on /home type ext4 (rw,relatime,user_xattr,barrier=1,data=ordered)
rpc_pipefs on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw,relatime)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,nosuid,nodev,noexec,relatime)
/dev/sr0 on /media/cdrom0 type udf (ro,nosuid,nodev,noexec,relatime,utf8,user=zachary)
/dev/sr1 on /media/cdrom1 type udf (ro,nosuid,nodev,noexec,relatime,utf8,user=zachary)
/dev/sdd2 on /media/zacharydimaria type fuseblk (rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096)

pvdisplay不返回任何内容。

编辑：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>
# / was on /dev/sdb1 during installation
UUID=d7968f08-4108-4382-a585-0b4a3850ec63 /               ext4    errors=remount-ro 0       1
# /home was on /dev/sdb6 during installation
UUID=ec5e593e-a36f-4b88-b210-8666128b4bf1 /home           ext4    defaults        0       2
# swap was on /dev/sdb5 during installation
UUID=4525d76b-dd14-48e4-b60d-dffee5b08245 none            swap    sw              0       0
/dev/sr0        /media/cdrom0   udf,iso9660 user,noauto     0       0
/dev/sr1        /media/cdrom1   udf,iso9660 user,noauto     0       0

如果仔细完成，您可以使用gparted来安全地调整分区大小。

您应该启动到实时映像，因为您无法调整已装入分区的大小，并确保有效备份了数据！

值得一提的是，您也可以将大目录移动到另一个分区上（例如，通过在/ var上挂载/ dev / sdb3）。但是请小心，因为如果无法访问某些数据（即，如果将它们移至未在启动时挂载的分区），则系统可能无法启动。