Linode - Why No Space Left On Device技术
近来遇到的两次问题，两个主机都发生了，我发了信件，收到了回复！
Hi, Recently, I have encountered this situation twice. What is the reason? The disk shows that there is still space, but it cannot be written. rsync: open failed: No space left on device (28) df -h Filesystem Size Used Avail Use% Mounted on udev 480M 0 480M 0% /dev tmpfs 99M 6.7M 93M 7% /run /dev/sda 25G 14G 9.2G 60% / tmpfs 494M 0 494M 0% /dev/shm tmpfs 5.0M 0 5.0M 0% /run/lock tmpfs 494M 0 494M 0% /sys/fs/cgroup tmpfs 99M 0 99M 0% /run/user/0 Thanks.
奇特的是 df -h 和 df -i 比例不一致。
Hi there, It's possible that though you haven't run out of disk space, you may be using all of your available inodes. This post on our Community Questions site offers an explanation -- essentially, each file on your Linode has a corresponding inode, and if you have many small files, you can use up all of your available inodes before you use all of your disk space. To check, run the following command: df -i If you find that your IUse% is close to 100% for /dev/sda, you may need to resize your disk. The issue could also be arising from the way rsync copies files, which is by creating a new copy and then moving it to its destination file. I found this resource on Google that addresses this issue, and might also be helpful in troubleshooting this: serverfault: rsync : write failed - No space left on device (28) I hope these resources help point you in the right direction. If you have any further questions, please don't hesitate to ask. Thanks, E. Clyne Linode Support Team
我经过仔细思考，查看了 Linode 和 DigitalOcean 的对象存储，感觉其提供的 API 并不好用，也不太适合我这种拥有上千万小文件的用户，一旦 API 写入了业务代码后对于后期维护来讲，也是个大坑。所以，思来想去，还是决定使用 nanode 联盟撑起来，结果，被坑了两次，第一次我以为是 Linode 的 Bug，删除主机再重新试了一次，还是不行，看来还是使用私有云吧！
来看看我的电脑的一些对比
Mac
$ df -h Filesystem Size Used Avail Capacity iused ifree %iused Mounted on /dev/disk1s1 466Gi 244Gi 217Gi 54% 1787940 9223372036852987867 0% / devfs 197Ki 197Ki 0Bi 100% 687 0 100% /dev /dev/disk1s4 466Gi 4.0Gi 217Gi 2% 4 9223372036854775803 0% /private/var/vm map -hosts 0Bi 0Bi 0Bi 100% 0 0 100% /net map auto_home 0Bi 0Bi 0Bi 100% 0 0 100% /home $ df -i Filesystem 512-blocks Used Available Capacity iused ifree %iused Mounted on /dev/disk1s1 976490568 512632400 454090816 54% 1787940 9223372036852987867 0% / devfs 393 393 0 100% 687 0 100% /dev /dev/disk1s4 976490568 8388648 454090816 2% 4 9223372036854775803 0% /private/var/vm map -hosts 0 0 0 100% 0 0 100% /net map auto_home 0 0 0 100% 0 0 100% /home
Raspberry 8G
pi@raspberrypi:~ $ df -h 文件系统 容量 已用 可用 已用% 挂载点 /dev/root 117G 60G 53G 54% / devtmpfs 3.7G 0 3.7G 0% /dev tmpfs 3.9G 0 3.9G 0% /dev/shm tmpfs 3.9G 281M 3.6G 8% /run tmpfs 5.0M 4.0K 5.0M 1% /run/lock tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup /dev/mmcblk0p1 253M 31M 222M 13% /boot tmpfs 782M 4.0K 782M 1% /run/user/1000 overlay 117G 60G 53G 54% /var/lib/docker/overlay2/1c3a3273beedf93d3269d37f948be5d55394e55f441f0772242a0840ac483957/merged overlay 117G 60G 53G 54% /var/lib/docker/overlay2/84d00d722c7a7f587a3acaf4b941f48db58701ac3cf348298216299473a11d88/merged pi@raspberrypi:~ $ df -i 文件系统 Inode 已用(I) 可用(I) 已用(I)% 挂载点 /dev/root 7547136 171306 7375830 3% / devtmpfs 958633 417 958216 1% /dev tmpfs 1000065 1 1000064 1% /dev/shm tmpfs 1000065 650 999415 1% /run tmpfs 1000065 3 1000062 1% /run/lock tmpfs 1000065 15 1000050 1% /sys/fs/cgroup /dev/mmcblk0p1 0 0 0 - /boot tmpfs 1000065 19 1000046 1% /run/user/1000 overlay 7547136 171306 7375830 3% /var/lib/docker/overlay2/1c3a3273beedf93d3269d37f948be5d55394e55f441f0772242a0840ac483957/merged overlay 7547136 171306 7375830 3% /var/lib/docker/overlay2/84d00d722c7a7f587a3acaf4b941f48db58701ac3cf348298216299473a11d88/merged
Linode nano
# df -h Filesystem Size Used Avail Use% Mounted on udev 480M 0 480M 0% /dev tmpfs 99M 7.9M 91M 8% /run /dev/sda 25G 12G 12G 49% / tmpfs 494M 0 494M 0% /dev/shm tmpfs 5.0M 0 5.0M 0% /run/lock tmpfs 494M 0 494M 0% /sys/fs/cgroup tmpfs 99M 0 99M 0% /run/user/0 # df -i Filesystem Inodes IUsed IFree IUse% Mounted on udev 122708 315 122393 1% /dev tmpfs 126362 459 125903 1% /run /dev/sda 1505280 1052605 452675 70% / tmpfs 126362 1 126361 1% /dev/shm tmpfs 126362 3 126359 1% /run/lock tmpfs 126362 17 126345 1% /sys/fs/cgroup tmpfs 126362 4 126358 1% /run/user/0
Linode 2G
# df -h Filesystem Size Used Avail Use% Mounted on udev 984M 0 984M 0% /dev tmpfs 200M 21M 180M 11% /run /dev/sda 49G 41G 5.9G 88% / tmpfs 998M 0 998M 0% /dev/shm tmpfs 5.0M 0 5.0M 0% /run/lock tmpfs 998M 0 998M 0% /sys/fs/cgroup tmpfs 200M 0 200M 0% /run/user/0 # df -i Filesystem Inodes IUsed IFree IUse% Mounted on udev 251732 313 251419 1% /dev tmpfs 255386 426 254960 1% /run /dev/sda 3041280 2758538 282742 91% / tmpfs 255386 1 255385 1% /dev/shm tmpfs 255386 3 255383 1% /run/lock tmpfs 255386 17 255369 1% /sys/fs/cgroup tmpfs 255386 4 255382 1% /run/user/0
暂无