From: Roy W. Erickson (erickson@pixelmagicfx.com)
Date: Tue Feb 18 2003 - 15:31:40 EST
All:
I have a SunFire 480 running Veritas Filesystem 3.4 on solaris 8,
patched through October.
When I run the defragmentation, via cron, I get output that looks like
this:
----------------------------
Reorganizing /mimi
Extent Fragmentation Report
Total Average Average Total
Files File Blks # Extents Free Blks
337875 691 4 34620137
blocks used for indirects: 33044
% Free blocks in extents smaller than 64 blks: 17.22
% Free blocks in extents smaller than 8 blks: 2.84
% blks allocated to extents 64 blks or larger: 98.03
...
----------------------------
Q: What should the last three %'s in the listing above be in order to
deem my file system healthy?
The history over the course of time lookes like:
abe 43# grep "than 64" *
out_file.0216: % Free blocks in extents smaller than 64 blks: 17.22
out_file.0217: % Free blocks in extents smaller than 64 blks: 18.07
out_file.0218: % Free blocks in extents smaller than 64 blks: 20.10
abe 45# grep "than 8" *
out_file.0216: % Free blocks in extents smaller than 8 blks: 2.84
out_file.0217: % Free blocks in extents smaller than 8 blks: 2.83
out_file.0218: % Free blocks in extents smaller than 8 blks: 3.06
abe 46# grep "extents 64" *
out_file.0216: % blks allocated to extents 64 blks or larger: 98.03
out_file.0217: % blks allocated to extents 64 blks or larger: 98.09
out_file.0218: % blks allocated to extents 64 blks or larger: 98.09
Thanks,
Roy
PS :
Volumes striped across two FC arrays with a strip unit of 128. The f/s
has a blk size of 4096
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