On Mon, Nov 20, 2017 at 05:25:16PM +0000, Giles Orr via talk wrote:
I ran a backup today and noticed one file because it took so long to back up. I'm using FC25 on this machine, and used the OS packages of Docker. I seem to have a 100G file on a 12G partition:
root@toshi7:/var/lib/docker/devicemapper/devicemapper# ls -lh total 34M -rw------- 1 root root 100G Oct 25 22:02 data -rw------- 1 root root 2.0G Oct 25 22:02 metadata
Try ls -lhs For example: ~> dd if=/dev/zero bs=1M count=1 seek=1000 of=testfile 1+0 records in 1+0 records out 1048576 bytes (1.0 MB) copied, 0.00203937 s, 514 MB/s ~> ls -lhs testfile 1.0M -rw-r--r-- 1 lsorensen users 1001M Nov 20 13:56 testfile So 1MB allocated out of 1001MB file size. The first 1000MB are a 'hole' in the file that isn't allocated yet. The -s option to ls makes it show the allocated space in the first column. -- Len Sorensen