无法调整 AWS EBS 根卷的大小或创建更大的交换分区 [已关闭]

2024-01-09

我有一个 Amazon Web Services EC2 Debian 8.0 实例,其弹性块存储 (EBS) 卷为 35GB。 fdisk 正确显示了大小,但我的根分区仍然是 7.8G,尽管我尝试执行 resize2fs。

root@ip-10-0-3-164:/home/admin# fdisk -l

Disk /dev/xvda: 35 GiB, 37580963840 bytes, 73400320 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
Disklabel type: dos
Disk identifier: 0x7d936f86

Device     Boot Start      End  Sectors Size Id Type
/dev/xvda1 *     4096 16773119 16769024   8G 83 Linux

root@ip-10-0-3-164:/home/admin# df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/xvda1      7.8G  2.1G  5.3G  29% /
udev             10M     0   10M   0% /dev
tmpfs           200M  4.3M  196M   3% /run
tmpfs           500M     0  500M   0% /dev/shm
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           500M     0  500M   0% /sys/fs/cgroup

root@ip-10-0-3-164:/home/admin# resize2fs /dev/xvda1
resize2fs 1.42.12 (29-Aug-2014)
The filesystem is already 2096128 (4k) blocks long.  Nothing to do!

root@ip-10-0-3-164:/home/admin# fdisk /dev/xvda

Welcome to fdisk (util-linux 2.25.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.


Command (m for help): p
Disk /dev/xvda: 35 GiB, 37580963840 bytes, 73400320 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
Disklabel type: dos
Disk identifier: 0x7d936f86

Device     Boot Start      End  Sectors Size Id Type
/dev/xvda1 *     4096 16773119 16769024   8G 83 Linux


Command (m for help): n
Partition type
   p   primary (1 primary, 0 extended, 3 free)
   e   extended (container for logical partitions)
Select (default p): p
Partition number (2-4, default 2): 2
First sector (2048-73400319, default 2048): 2048
Last sector, +sectors or +size{K,M,G,T,P} (2048-4095, default 4095): 

Created a new partition 2 of type 'Linux' and of size 1 MiB.

Command (m for help): p
Disk /dev/xvda: 35 GiB, 37580963840 bytes, 73400320 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
Disklabel type: dos
Disk identifier: 0x7d936f86

Device     Boot Start      End  Sectors Size Id Type
/dev/xvda1 *     4096 16773119 16769024   8G 83 Linux
/dev/xvda2       2048     4095     2048   1M 83 Linux

Partition table entries are not in disk order.

Command (m for help): t   
Partition number (1,2, default 2): 2
Hex code (type L to list all codes): L

 0  Empty           24  NEC DOS         81  Minix / old Lin bf  Solaris        
 1  FAT12           27  Hidden NTFS Win 82  Linux swap / So c1  DRDOS/sec (FAT-
 2  XENIX root      39  Plan 9          83  Linux           c4  DRDOS/sec (FAT-
 3  XENIX usr       3c  PartitionMagic  84  OS/2 hidden C:  c6  DRDOS/sec (FAT-
 4  FAT16 <32M      40  Venix 80286     85  Linux extended  c7  Syrinx         
 5  Extended        41  PPC PReP Boot   86  NTFS volume set da  Non-FS data    
 6  FAT16           42  SFS             87  NTFS volume set db  CP/M / CTOS / .
 7  HPFS/NTFS/exFAT 4d  QNX4.x          88  Linux plaintext de  Dell Utility   
 8  AIX             4e  QNX4.x 2nd part 8e  Linux LVM       df  BootIt         
 9  AIX bootable    4f  QNX4.x 3rd part 93  Amoeba          e1  DOS access     
 a  OS/2 Boot Manag 50  OnTrack DM      94  Amoeba BBT      e3  DOS R/O        
 b  W95 FAT32       51  OnTrack DM6 Aux 9f  BSD/OS          e4  SpeedStor      
 c  W95 FAT32 (LBA) 52  CP/M            a0  IBM Thinkpad hi eb  BeOS fs        
 e  W95 FAT16 (LBA) 53  OnTrack DM6 Aux a5  FreeBSD         ee  GPT            
 f  W95 Ext'd (LBA) 54  OnTrackDM6      a6  OpenBSD         ef  EFI (FAT-12/16/
10  OPUS            55  EZ-Drive        a7  NeXTSTEP        f0  Linux/PA-RISC b
11  Hidden FAT12    56  Golden Bow      a8  Darwin UFS      f1  SpeedStor      
12  Compaq diagnost 5c  Priam Edisk     a9  NetBSD          f4  SpeedStor      
14  Hidden FAT16 <3 61  SpeedStor       ab  Darwin boot     f2  DOS secondary  
16  Hidden FAT16    63  GNU HURD or Sys af  HFS / HFS+      fb  VMware VMFS    
17  Hidden HPFS/NTF 64  Novell Netware  b7  BSDI fs         fc  VMware VMKCORE 
18  AST SmartSleep  65  Novell Netware  b8  BSDI swap       fd  Linux raid auto
1b  Hidden W95 FAT3 70  DiskSecure Mult bb  Boot Wizard hid fe  LANstep        
1c  Hidden W95 FAT3 75  PC/IX           be  Solaris boot    ff  BBT            
1e  Hidden W95 FAT1 80  Old Minix      
Hex code (type L to list all codes): 82

Changed type of partition 'Linux' to 'Linux swap / Solaris'.

Command (m for help): w
The partition table has been altered.
Calling ioctl() to re-read partition table.
Re-reading the partition table failed.: Device or resource busy

The kernel still uses the old table. The new table will be used at the next reboot or after you run partprobe(8) or kpartx(8).

root@ip-10-0-3-164:/home/admin# fdisk /dev/xvda

Welcome to fdisk (util-linux 2.25.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.


Command (m for help): p
Disk /dev/xvda: 35 GiB, 37580963840 bytes, 73400320 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
Disklabel type: dos
Disk identifier: 0x7d936f86

Device     Boot Start      End  Sectors Size Id Type
/dev/xvda1 *     4096 16773119 16769024   8G 83 Linux
/dev/xvda2       2048     4095     2048   1M 82 Linux swap / Solaris

Partition table entries are not in disk order.

如您所见,resize2fs 没有效果。我也无法创建空间超过 1M 的交换分区。

我的所有实例都会出现此问题。尽管它们都有 30-35GB EBS 卷,但我无法调整它们的大小,它们仍保持在 8GB。 当我除了根安装的卷之外仅附加一个附加卷时,它工作正常。

你能帮助我吗?


忘记其他答案。我花了三天时间找出根本原因和一个简单的解决方法:

https://serverfault.com/questions/748063/debian-8-ami-only-using-8gb-partition https://serverfault.com/questions/748063/debian-8-ami-only-using-8gb-partition

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