I am working on a Perl script to run from an AIX Nim server to extract hardware errors from our Linux server using various forms of grep statements -
I have all my hosts in a text file and a command is run from the nim server to each host to pull out data from /var/log/messages and compile it into an email.
I seem to be strruggling with the following line:
in that I am getting thousands of multipath io messages and only want to print it in my report if it occurs once.
e.g.
Is there a way I can do this through using egrep/grep? I have been using '-m' option but it doesn't seem to be helping.
i just want my script to produce a report from each server's messages file for those hardware faults but not filling up my mailbox.
Hello out there!!!
I have a Red Hat Entreprise Linux 4 server and I am encountering this error
# grep
Segmentation Fault
I know it is not the right use of grep command, but I did that just for testing purpose,then I did
# which grep
/bin/grep
# ls -l /bin/grep
-rwxr-xr-x 1 root... (4 Replies)
I would like to configure a bare minimum Linux with internet browser on a system with Flash & RAM (but no harddisk or any other nonvolatile storage). Please advise. (5 Replies)
Hi,
Operating System: Ubuntu 10.04
Other Packages Installed: freetds,DBI,DBD-Sybase
I am trying to connect to SYBASE using perl programming..But the moment I am executing my perl program it throws a SEGMENTATION FAULT error.
I have attached strace output for the same...
Thanks for... (1 Reply)
We have run software on Dell Servers w/ Windows and seen the performance degrade overtime. We switched to an IBM server w/ AIX and have not seen the same performance degradation over time. In fact, the IBM servers are at least five years old and continue to preform well at the same level.
How... (2 Replies)
Hi,
I want to do some fault association analysis in red hat linux. who can tell me where I can get all of the fault information, and the detailed description about this fault information.
Thank you very much. (4 Replies)
Hi guys, first of all apologize for my English...
I have a big problem with "Segmentation fault", when running my game server.
Console:
(gdb) bt full
#0 0x0000000000000000 in ?? ()
No symbol table info available.
#1 0x00007ffff702aca4 in std::basic_ostream<char,... (1 Reply)
Hello folks,
I pretend acquire this hardware:
1-Motherboard Asus Skt1151 - H110M-A/M.2 (https://www.asus.com/pt/Motherboards...cifications/);
2-Intel i5 6400 2.7Ghz QuadCore Skt1151;
or
2-Intel i5 6500 3.2Ghz QuadCore Skt1151;
3-Dimm 8GB DDR4 Kingston CL15 2133Mhz;
Obvious I pretend... (1 Reply)
Discussion started by: enodev
1 Replies
LEARN ABOUT CENTOS
multipath
MULTIPATH(8) Linux Administrator's Manual MULTIPATH(8)NAME
multipath - Device mapper target autoconfig
SYNOPSIS
multipath [-v verbosity] [-b bindings_file] [-d] [-h|-l|-ll|-f|-t|-F|-B|-c|-q|-r|-a|-A|-w|-W] [-p failover|multi-
bus|group_by_serial|group_by_prio|group_by_node_name] [device]
DESCRIPTION
multipath is used to detect multiple paths to devices for fail-over or performance reasons and coalesces them
OPTIONS -v level
verbosity, print all paths and multipaths
0 no output
1 print the created or updated multipath names only, for use to feed other tools like kpartx
2 + print all info : detected paths, coalesced paths (ie multipaths) and device maps
-h print usage text
-d dry run, do not create or update devmaps
-l show the current multipath topology from information fetched in sysfs and the device mapper
-ll show the current multipath topology from all available information (sysfs, the device mapper, path checkers ...)
-f flush a multipath device map specified as parameter, if unused
-F flush all unused multipath device maps
-t print internal hardware table to stdout
-r force devmap reload
-B treat the bindings file as read only
-b bindings_file
set user_friendly_names bindings file location. The default is /etc/multipath/bindings
-c check if a block device should be a path in a multipath device
-q allow device tables with queue_if_no_path when multipathd is not running
-a add the wwid for the specified device to the wwids file
-A add wwids from any kernel command line mpath.wwid parameters to the wwids file
-w remove the wwid for the specified device from the wwids file
-W reset the wwids file to only include the current multipath devices
-p policy
force new maps to use the specified policy:
failover 1 path per priority group
multibus all paths in 1 priority group
group_by_serial
1 priority group per serial
group_by_prio
1 priority group per priority value. Priorities are determined by callout programs specified as a global, per-con-
troller or per-multipath option in the configuration file
group_by_node_name
1 priority group per target node name. Target node names are fetched in /sys/class/fc_transport/target*/node_name.
Existing maps are not modified.
device update only the devmap the path pointed by device is in. device is in the /dev/sdb (as shown by udev in the $DEVNAME variable) or
major:minor format. device may alternatively be a multipath mapname
SEE ALSO multipathd(8), multipath.conf(5), kpartx(8), udev(8), dmsetup(8)hotplug(8)AUTHORS
multipath was developed by Christophe Varoqui, <christophe.varoqui@opensvc.com> and others.
July 2006 MULTIPATH(8)