HP-UX Reference (11i v1 00/12) - 1M System Administration Commands A-M (vol 3)

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STANDARD Printed by: Nora Chuang [nchuang] STANDARD
/build/1111/BRICK/man1m/!!!intro.1m
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f
fsadm_vxfs(1M) fsadm_vxfs(1M)
% 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 allocation units.
The time it takes to complete extent reorganization varies, depending on the degree of fragmentation, 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 dur-
ing 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 operation.)
The column "FileBusy" (located under the heading "Errors") shows the total number of reorganization
requests that failed because the file was active during reorganization. The column "NoSpace" (located
under the heading "Errors") contains the total number of reorganization requests that failed because an
extent presumed free was allocated during the reorganization. The column "Total" (located under the head-
ing "Errors") is the total number or errors encountered during the reorganization and may include errors
that were not included with "FileBusy" or "NoSpace."
Notes
The online reorganization and online resize features of
fsadm are available only with the HP OnLineJFS
product.
FILES
lost+found/.fsadm lock file
/dev/rdsk/ ∗ file system devices
SEE ALSO
fcntl(2), fsadm(1M), mkfs_vxfs(1M), mount_vxfs(1M), vxfsio(7), vxupgrade(1M).
HP-UX Release 11i: December 2000 − 7 − Section 1M−−251
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