Hi,
i have a backup system running 20TB of storage having 350 million files.
This was working fine for month.
But now the free space is so heavily fragmented that i only see the
kworker with 4x 100% CPU and write speed beeing very slow. 15TB of the
20TB are in use.
Overall files are 350 Million - all in different directories. Max 5000
per dir.
Kernel is 3.10.53 and mount options are:
noatime,nodiratime,attr2,inode64,logbufs=8,logbsize=256k,noquota
# xfs_db -r -c freesp /dev/sda1
from to extents blocks pct
1 1 29484138 29484138 2,16
2 3 16930134 39834672 2,92
4 7 16169985 87877159 6,45
8 15 78202543 999838327 73,41
16 31 3562456 83746085 6,15
32 63 2370812 102124143 7,50
64 127 280885 18929867 1,39
256 511 2 827 0,00
512 1023 65 35092 0,00
2048 4095 2 6561 0,00
16384 32767 1 23951 0,00
Is there anything i can optimize? Or is it just a bad idea to do this
with XFS? Any other options? Maybe rsync options like --inplace /
--no-whole-file?
Greets,
Stefan
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