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ziomon: Update man page to document device symlink support

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Enhance the ziomon man page to document support for persistent SCSI device
symlinks under /dev/disk/ subdirectories (by-id, by-path, by-uuid, etc.).

The DESCRIPTION section now clarifies that multipath devices and/or device
symlinks resolve to their underlying regular block devices for monitoring.
Updated EXAMPLES to include a scenario demonstrating usage with a device
symlink alongside regular and multipath devices.

Signed-off-by: Ajaykumar Rajappa <ajaykr@linux.ibm.com>
Reviewed-by: M Nikhil <nikh1092@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
This commit is contained in:
Ajaykumar Rajappa
2025-12-01 10:17:04 +01:00
committed by Steffen Eiden
parent 34aff761d0
commit 41ec030db1
1 changed files with 8 additions and 6 deletions
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14
ziomon/ziomon.8
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@@ -14,9 +14,10 @@ ziomon \- Collect data for performance analysis of fcp adapters.
.SH DESCRIPTION
.B ziomon
starts and controls various utilities to collect data for performance analysis
for a specified duration. Note that it is possible to specify multipath
devices also. If multipath devices are specified, the respective
regular devices used by the multipath devices will be monitored.
for a specified duration. It is possible to specify multipath devices and persistent
device symlinks from /dev/disk/... subdirectories (such as by-id, by-path, by-uuid,
by-label, etc.). If multipath devices or device symlinks are specified, the respective
underlying regular block devices will be monitored.
.SH OPTIONS
.TP
@@ -61,13 +62,14 @@ Basename for output files.
specifies a device to collect respective data for.
.SH EXAMPLES
Collect data for devices /dev/sda, /dev/sdg, /dev/sdp and the multipath device
/dev/mapper/36005076303ffc104000000000000212b for 5 minutes.
Collect data for devices /dev/sda, /dev/sdg, /dev/sdp, the multipath device
/dev/mapper/36005076303ffc104000000000000212b and the device symlink
/dev/disk/by-id/scsi-36005076307ffd72c00000000000054f5 for 5 minutes.
Data should be sampled every 20 seconds.
The collected data size should not exceed 50 MB.
The output files should base their names on 'trace_data':
ziomon -i 20 -d 5 -l 50M -o trace_data /dev/mapper/36005076303ffc104000000000000212b /dev/sda /dev/sdg /dev/sdp
ziomon -i 20 -d 5 -l 50M -o trace_data /dev/sda /dev/sdg /dev/sdp /dev/mapper/36005076303ffc104000000000000212b /dev/disk/by-id/scsi-36005076307ffd72c00000000000054f5
.SH "SEE ALSO"
.BR ziomon_mgr (8),