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Homework and Emergencies Emergency UNIX and Linux Support RHEL and Centos VMs with IO failure on root Post 302604057 by bobby320 on Friday 2nd of March 2012 06:02:27 PM
Old 03-02-2012
Hello,

We had similar issue repeating again, as we are using iscsi storage for ESX server.
Actual the issue was network switch got rebooted, all the linux VM's had read-only filesystem error. All version of Linux OS are CentOS 5.7.

Is their any patch available for this kind of this kind of issue, that will be really helpful.

Sick of rebooting each and every server. Smilie

Thanks,
 

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ISCSI-TARGET(8) 					    BSD System Manager's Manual 					   ISCSI-TARGET(8)

NAME
iscsi-target -- service remote iSCSI requests SYNOPSIS
iscsi-target [-46DV] [-b block length] [-f configuration file] [-p port number] [-s maximum number of sessions] [-t target name] [-v verbose arg] DESCRIPTION
iscsi-target is the server for iSCSI requests from iSCSI initiators. iscsi-target listens for discovery and login requests on the required port, and responds to those requests appropriately. Options and operands available for iscsi-target: -4 iscsi-target will listen for IPv4 connections, and respond back using IPv4. This is the default address family. -6 iscsi-target will listen for IPv6 connections, and respond back using IPv6. -b blocksize Specify the underlying block size for iSCSI storage which will be served. The possible sizes are: 512, 1024, 2048, and 4096 bytes, with the default being 512 bytes. -D When this option is specified, iscsi-target will not detach itself from the controlling tty, and will not become a daemon. This can be useful for debugging purposes. -f configfile Use the named file as the configuration file. The default file can be found in /etc/iscsi/targets. See targets(5) for more informa- tion. -p port number Use the port number provided as the argument as the port on which to listen for iSCSI service requests from initiators. -s maximum number of sessions Allow the maximum number of sessions to be initiated when connecting to the target. -t filename The target name (as it appears to the iSCSI initiator) can be specified using this flag. -V iscsi-target will print the utility name and version number, and the address for bug reports, and then exit. -v argument The amount of information shown can be varied by using this command. Possible values of argument are net to show network-related information, iscsi to show iSCSI protocol-related information, scsi to show SCSI protocol information, and all to show information from all of the above arguments. FILES
/etc/iscsi/targets the list of exported storage /var/run/iscsi-target.pid the PID of the currently running iscsi-target SEE ALSO
targets(5) HISTORY
The iscsi-target utility first appeared in NetBSD 4.0. BSD
May 27, 2006 BSD
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