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Hint on centos7 when writing to file. No space left on device (28), but I checked the disk and Inodes both have space. I don’t know why. Has this ever happened to anyone?
[root@GDI2390 sync_backup]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/centos-root 52403200 2595000 49808200 5% /
devtmpfs 32867708 0 32867708 0% /dev
tmpfs 32874076 24 32874052 1% /dev/shm
tmpfs 32874076 279528 32594548 1% /run
tmpfs 32874076 0 32874076 0% /sys/fs/cgroup
/dev/sda1 508588 98124 410464 20% /boot
/dev/mapper/centos-home 4797426908 902326816 3895100092 19% /home
tmpfs 6574816 0 6574816 0% /run/user/0
[root@GDI2390 sync_backup]# df -i
Filesystem Inodes IUsed IFree IUse% Mounted on
/dev/mapper/centos-root 52428800 89274 52339526 1% /
devtmpfs 8216927 562 8216365 1% /dev
tmpfs 8218519 2 8218517 1% /dev/shm
tmpfs 8218519 734 8217785 1% /run
tmpfs 8218519 13 8218506 1% /sys/fs/cgroup
/dev/sda1 512000 330 511670 1% /boot
/dev/mapper/centos-home 4797861888 26409024 4771452864 1% /home
tmpfs 8218519 1 8218518 1% /run/user/0
2
Answers
check “Disk space vs Inode usage”
df -h vs df -i
check also – No space left on device
Assuming this is ext[3|4], check and see if any of the folders you are rsyncing contains about 1M files. Note it is not a straight forward limit that has over flowed, it is more complicated and related to length of your filenames and depth of b-trees.
It is not disk space or inodes. It is the directory index that may have overflowed. See https://askubuntu.com/questions/644071/ubuntu-12-04-ext4-ext4-dx-add-entry2006-directory-index-full