stripe - Stripes a file across several volumes in a file domain
/usr/sbin/stripe -n volume_count filename
Specifies the number of volumes the striped file crosses. The number of
volumes must be greater than one.
Specifies the name of the file to stripe.
The stripe utility enables you to improve the read/write performance of a
file. The stripe utility directs a zero-length file (a file with no data
written to it yet) to be spread evenly across several volumes within a file
domain. As data is appended to the file, the data is spread across the
volumes. AdvFS determines the number of pages per stripe segment and alter-
nates the segments among the disks in a sequential pattern.
Existing, nonzero-length files cannot be striped using the stripe utility.
To stripe an existing file, create a new file, use the stripe utility to
stripe the new file, and copy the contents of the file you want to stripe
into the new striped file. After copying the file, delete the nonstriped
Once a file is striped, you cannot use the stripe utility to modify the
number of disks that a striped file crosses. To change the volume count of
a striped file, you can create a second file with a new volume count, and
then copy the contents of the first file into the second file. After copy-
ing the file, delete the first file.
You cannot stripe a nonzero-length file or a file that is already striped.
1. The following example stripes the file abc across three volumes in the
same file domain:
# stripe -n 3 abc
2. The following example stripes an existing, nonzero-length file, foo,
across three volumes in the same domain. First a new file, newfoo, is
created and striped. Then, the contents of file foo are copied to the
new, striped file:
# touch newfoo
# stripe -n 3 newfoo
# cp foo newfoo