Disk Usage alarm on /tftpboot
Article ID: 167766
Updated On:
Products
XOS
Issue/Introduction
This article shows how to find out the reasons for a disk usage alarmThe type of alarm reported similar to following means that /tftpboot space is highly utilized:
CBS# show alarms active major
Active Alarms Summary:
Source Critical Major Minor
------ -------- ----- -----
cp2 0 1 1
Total 0 1 1
* indicates an alarm that can be cleared with the 'clear alarms' CLI command
Major:
ID Date Source Description
-- ---- ------ -----------
1008 Feb 12 04:28:17 cp2 Disk utilization (81%) /tftpboot
CBS# show alarms active major
Active Alarms Summary:
Source Critical Major Minor
------ -------- ----- -----
cp2 0 1 1
Total 0 1 1
* indicates an alarm that can be cleared with the 'clear alarms' CLI command
Major:
ID Date Source Description
-- ---- ------ -----------
1008 Feb 12 04:28:17 cp2 Disk utilization (81%) /tftpboot
Cause
Some reasons why data written by one or more VAP groups might grow to alarm levels are:
- application is logging to local filesystem
- application was left with debug log level enabled
- old VAP group backups might be present in /tftpboot/archives directory
Resolution
There are multiple ways to find out top disk space consumers, for example the Unix level command du:
# du -hs /tftpboot/* | sort -nr | head
This command shows space occupied by each directory under /tftpboot folder. This directory contains images for VAPs and therefore typically counted in GBs.
If any directory takes significantly more space, you can drill down and see which sub-directories take most of the space, for example:
# du -hs /tfptboot/<subdirectory>/*
To display the largest files in /tftpboot with size over 10MB, you can use this command:
# find /tftpboot -type f -size +10M -exec ls -lh {} \; | awk '{ print $5 ": " $9 }' | sort -rn
Another option is to use the XOS CLI command show disk-usage history to see how disk space utilization changes over time:
The Unix level command /usr/os/bin/cbs_disk_usage can be used to find the largest files on each VAP (some output omitted):
Presence of VAP group backups created in the past might be verified by running CLI command:
# archive-vap-group show
To remove these old backups, run:
# archive-vap-group delete vap-group <name> archive <number>
# du -hs /tftpboot/* | sort -nr | head
This command shows space occupied by each directory under /tftpboot folder. This directory contains images for VAPs and therefore typically counted in GBs.
If any directory takes significantly more space, you can drill down and see which sub-directories take most of the space, for example:
# du -hs /tfptboot/<subdirectory>/*
To display the largest files in /tftpboot with size over 10MB, you can use this command:
# find /tftpboot -type f -size +10M -exec ls -lh {} \; | awk '{ print $5 ": " $9 }' | sort -rn
Another option is to use the XOS CLI command show disk-usage history to see how disk space utilization changes over time:
CBS# show disk-usage history
======================================================================
Top Disk Users Report for Mon Dec 30 04:02:03 CET 2013
======================================================================
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/md7 11811952 2762840 8449092 25% /
/dev/md1 102672 7984 89472 9% /boot
/dev/mapper/d1vg0-lv0
1971472 137488 1733840 8% /cbconfig
/dev/mapper/d1vg1-lv0
37353008 6694388 28761148 19% /tftpboot
/dev/mapper/d1vg1-lv1
2011792 111844 1797756 6% /mgmt
======================================================================
Top Disk Users Report for Tue Dec 31 04:02:03 CET 2013
======================================================================
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/md7 11811952 2758672 8453260 25% /
/dev/md1 102672 7984 89472 9% /boot
/dev/mapper/d1vg0-lv0
1971472 137560 1733768 8% /cbconfig
/dev/mapper/d1vg1-lv0
37353008 6696712 28758824 19% /tftpboot
/dev/mapper/d1vg1-lv1
2011792 111868 1797732 6% /mgmt
...etc
The Unix level command /usr/os/bin/cbs_disk_usage can be used to find the largest files on each VAP (some output omitted):
# /usr/os/bin/cbs_disk_usage
======================================================================
Top Disk Users Report for Fri Jan 10 18:33:44 CET 2014
======================================================================
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/md7 11811952 2785724 8426208 25% /
/dev/md1 102672 7984 89472 9% /boot
/dev/mapper/d1vg0-lv0
1971472 139388 1731940 8% /cbconfig
/dev/mapper/d1vg1-lv0
37353008 6732600 28722936 19% /tftpboot
/dev/mapper/d1vg1-lv1
2011792 112024 1797576 6% /mgmt
apm_shared
16777336 apm_shared/Firmware/AP/apm50_fpga_0207_diag_0504.dat
16777336 apm_shared/Firmware/AP/ap9600_fpga_0207_diag_0504.dat
3276920 apm_shared/Firmware/AP/apcp6_fpga_a1.dat
3276920 apm_shared/Firmware/AP/apcp65_fpga_0600.dat
3276896 apm_shared/Firmware/AP/apm2030_fpga_R0001.dat
...
fw_1
135416832 fw_1/var/opt/CPsuite-R75.40VS/fw1/conf/appfw/appfw_tables.sqlite
53087885 fw_1/var/opt/CPsuite-R75.40VS/fw1/av/kav/setup/kav8.tar.gz
50460672 fw_1/opt/CPsuite-R75.40VS/fw1/oracle_oi/oracle_sdk.tar
28932444 fw_1/var/opt/CPsuite-R75.40VS/fw1/tmp/Check_Point_Arkanoid_Agent_pkg.tgz
16777336 fw_1/crossbeam/etc/Firmware/AP/apm50_fpga_0207_diag_0504.dat
Presence of VAP group backups created in the past might be verified by running CLI command:
# archive-vap-group show
To remove these old backups, run:
# archive-vap-group delete vap-group <name> archive <number>
Workaround
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