我使用Centos 6.3 x64的社区图像创建了我的EC2机器.我添加了35 GB的磁盘.现在当我做#df -h
Filesystem Size Used Avail Use% Mounted on /dev/xvda1 7.9G 1.2G 6.4G 16% / tmpfs 7.3G 0 7.3G 0% /dev/shm
我的磁盘是35GB,但它在root中显示8 GB,在tmpfs中显示7.
我试图使用resize2fs,但它没有在centos上工作.磁盘有ext4分区..
# resize2fs /dev/xvda resize2fs 1.41.12 (17-May-2010) resize2fs: Device or resource busy while trying to open /dev/xvda Couldn't find valid filesystem superblock.
或者即使我尝试resize2fs/dev/xvda1它说设备无关.
任何想法或其他方式,它的根磁盘(/).所以无法卸下它.
以下步骤非常简单适合我:
# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT xvda 202:0 0 30G 0 disk ??xvda1 202:1 0 8G 0 part /
以root身份执行以下命令:
# yum install cloud-utils-growpart # growpart /dev/xvda 1 # reboot
重启后:
# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT xvda 202:0 0 30G 0 disk ??xvda1 202:1 0 30G 0 part /
我遇到了同样的问题。我要做的就是
重新启动实例
运行命令
sudo resize2fs -f /dev/xxxx
对我来说效果很好。
我找到了一种方法,resize2fs不工作,以防不知道为什么,但它说设备或资源忙.我在使用fdisk 发现了一篇关于resizedisk的非常好的文章我们可以通过删除和创建它来增加块大小并使分区可启动.它需要的只是重启.如果你使用相同的起始气缸,它不会影响你的数据.
# df -h <<1>> Filesystem Size Used Avail Use% Mounted on /dev/xvda1 6.0G 2.0G 3.7G 35% / tmpfs 15G 0 15G 0% /dev/shm # fdisk -l <<2>> Disk /dev/xvda: 21.5 GB, 21474836480 bytes 97 heads, 17 sectors/track, 25435 cylinders Units = cylinders of 1649 * 512 = 844288 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0003b587 Device Boot Start End Blocks Id System /dev/xvda1 * 2 7632 6291456 83 Linux # fdisk /dev/xvda <<3>> WARNING: DOS-compatible mode is deprecated. It's strongly recommended to switch off the mode (command 'c') and change display units to sectors (command 'u'). Command (m for help): u <<4>> Changing display/entry units to sectors Command (m for help): p <<5>> Disk /dev/xvda: 21.5 GB, 21474836480 bytes 97 heads, 17 sectors/track, 25435 cylinders, total 41943040 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: 0x0003b587 Device Boot Start End Blocks Id System /dev/xvda1 * 2048 12584959 6291456 83 Linux Command (m for help): d <<6>> Selected partition 1 Command (m for help): n <<7>> Command action e extended p primary partition (1-4) p <<8>> Partition number (1-4): 1 <<9>> First sector (17-41943039, default 17): 2048 <<10>> Last sector, +sectors or +size{K,M,G} (2048-41943039, default 41943039): <<11>> Using default value 41943039 Command (m for help): p <<12>> Disk /dev/xvda: 21.5 GB, 21474836480 bytes 97 heads, 17 sectors/track, 25435 cylinders, total 41943040 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: 0x0003b587 Device Boot Start End Blocks Id System /dev/xvda1 2048 41943039 20970496 83 Linux Command (m for help): a <<13>> Partition number (1-4): 1 <<14>> Command (m for help): w <<15>> The partition table has been altered! Calling ioctl() to re-read partition table. WARNING: Re-reading the partition table failed with error 16: 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) Syncing disks. # reboot <<16>> <wait> # df -h <<17>> Filesystem Size Used Avail Use% Mounted on /dev/xvda1 20G 2.0G 17G 11% / tmpfs 15G 0 15G 0% /dev/shm # resize2fs /dev/xvda1 <<18>> resize2fs 1.41.12 (17-May-2010) The filesystem is already 5242624 blocks long. Nothing to do!