HP-UX Reference (11i v2 03/08) - 1M System Administration Commands A-M (vol 3)

f
fsadm_vxfs(1M) fsadm_vxfs(1M)
Files File Blks # Extents Free Blks
9293 115 1 149352
blocks used for indirects: 48
% Free blocks in extents smaller than 64 blks: 10.40
% Free blocks in extents smaller than 8 blks: 0.56
% blks allocated to extents 64 blks or larger: 91.67
Free Extents By Size
1: 156 2: 140 4: 101
8: 292 16: 290 32: 241
64: 155 128: 94 256: 43
512: 33 1024: 20 2048: 1
4096: 1 8192: 1 16384: 1
32768: 1 65536: 0 131072: 0
262144: 0 524288: 0 1048576: 0
2097152: 0 4194304: 0 8388608: 0
16777216: 0 33554432: 0 67108864: 0
134217728: 0 268435456: 0 536870912: 0
1073741824: 0 2147483648: 0
Pass 1 Statistics
Extents Reallocations Ioctls Errors
Searched Attempted Issued FileBusy NoSpace Total
total 12547 287 158 0 0 0
Pass 2 Statistics
Extents Reallocations Ioctls Errors
Searched Attempted Issued FileBusy NoSpace Total
total 13157 148 72 0 0 0
Extent Fragmentation Report
Total Average Average Total
Files File Blks # Extents Free Blks
9294 123 1 70400
blocks used for indirects: 64
% Free blocks in extents smaller than 64 blks: 14.00
% Free blocks in extents smaller than 8 blks: 0.70
% blks allocated to extents 64 blks or larger: 92.09
Free Extents By Size
1: 102 2: 79 4: 59
8: 192 16: 189 32: 150
64: 64 128: 37 256: 22
512: 2 1024: 4 2048: 4
4096: 4 8192: 2 16384: 0
32768: 0 65536: 0 131072: 0
262144: 0 524288: 0 1048576: 0
2097152: 0 4194304: 0 8388608: 0
16777216: 0 33554432: 0 67108864: 0
134217728: 0 268435456: 0 536870912: 0
1073741824: 0 2147483648: 0
Note that the default five passes were scheduled, but the reorganization finished in two passes.
This file system had a significant amount of free space although there were several free small extents.
The situation was corrected by reallocating one or more of the extents on many of the files. The files
selected for reallocation in this case are those with extents in the heavily fragmented section of the alloca-
tion units. The time it takes to complete extent reorganization varies, depending on the degree of frag-
mentation, disk speed, and the number of inodes in the file system. In general, extent reorganization
takes approximately one minute for every 100 megabytes of disk space.
In the preceding example, the column "Extents Searched" contains the total number of extents examined.
The column "Reallocations Attempted" contains the total number of consolidations or merging of extents
performed. The column "Ioctls Issued" contains the total number of reorganization request calls made
during the pass. This corresponds closely to the number of files that are being operated on in that pass as
most files can be reorganized with a single ioctl. (More than one extent may be consolidated in one opera-
tion.)
Section 1M−−212 Hewlett-Packard Company − 7 − HP-UX 11i Version 2: August 2003