03-03-2012
Storage is not intended to be intermittently connected and disconnected while in operation. You have a single point of failure there and the ext3 component of RHEL is trying to protect your data when your network fails and the one and only path to your disks go down.
The "patch" would be to provide redundant paths to your storage, which with iSCSI would give the added implicit benefit of redundant network connections.
Additionally, your environment would benefit from some form of change control, so that the potential impact of every proposed change to the environment - such as rebooting a network switch - is carefully considered and approved before it happens and is clearly documented.
10 More Discussions You Might Find Interesting
1. Virtualization and Cloud Computing
Hi
I would like to know how to do virtualization in Rhel 5.3 and Cent os 5.3, As i am new this Virtualization need guidence how to install and configure guest os in Rhel and Cent Os
can some one guide me step by step
Regards
Solaris8in (1 Reply)
Discussion started by: solaris8in
1 Replies
2. Red Hat
Hi, I have some questions about RHEL and CentOS download and installation.
(1) Is RHEL6.0 x86_64 beta downloaded from Red Hat site working fine?
(2) Where to download CentOS 5.5 DVD iso without using BitTorrent?
(3) What are the differences between these two images - CentOS 5.5 i386 and... (6 Replies)
Discussion started by: aixlover
6 Replies
3. Red Hat
Hi all, i have 3 nodes cluster (Centos 5 cluster suit) with out quorum disk,
node vote = 1,
the value of a quorum = 2,
when 2 nodes going offline, cluster services are destoys.
How i can save the cluster and all services(move all services to one alive node)
with out quorum disk when other... (3 Replies)
Discussion started by: Flomaster
3 Replies
4. Red Hat
Hello,
I was wondering if it would be possible to run two VMs one with services for IPv4 and the other one with services for IPv6. The main physical system would be connected to a IPv6 switch.
I think it should be fine but I would like to hear out your comments. (1 Reply)
Discussion started by: svalenciatech
1 Replies
5. Red Hat
Hi guys
I have CentOS installed on my server. I have also installed TFTP server, DHCP server. I am able to install CentOS on remote machines using PXE boot and kickstart cfg file.
I would like to install OpenSUSE using CentOS kickstart file. How do I do it ? I am also fine with any other... (2 Replies)
Discussion started by: msohail
2 Replies
6. Red Hat
Hello,
Can someone suggest me what I missing, I re-sized a root virtual disk to 30GB on the CentOS VM. After re-sizing the disk, I booted the OS and ran fdisk -list command I was able view the size of the disk as 30GB.
Paritions in the vm before I resize are:
/boot - Primary parition
/... (1 Reply)
Discussion started by: bobby320
1 Replies
7. UNIX for Dummies Questions & Answers
Came home the other day to a Napp-it Gui that would not load.
Login would appear but when i attempted I would get the following
Set default permissions and reading disk and pool parameter, please wait..
in case of problems, try a reboot after Power-Off or check disk and pool status at CLI.... (1 Reply)
Discussion started by: fastedd27
1 Replies
8. Red Hat
I was testing Networking Teaming (activebackup) with a VM hosted on VmWare Workstation and VirtualBox, and the result is, if the active interface is down, the system is not using the backup interface.
Tested on both CentOS / RHEL 7
Please find below the command I have used to configure teaming.... (0 Replies)
Discussion started by: atanubanerji
0 Replies
9. Red Hat
Hi All,
I have one logical volume with size as 900G and it is mounted as xfs file system.
Now I want to reduce this partition to 500G.
So I followed the below steps.
unmount the mount point /home
Reduced the volume using the command
Now I remounted the partition.
But the problem... (3 Replies)
Discussion started by: kalpeer
3 Replies
10. Red Hat
Hi!
One of our clients need RHEL 7 on PPC hardware for their R&D setup and they are particular about this being 'Little Endian'.
The problem is that Redhat doesn't have LE RHEL7 images below 7.1 while the latest toolkit (which is needed while reimaging an IBM LPAR) that IBM provides only... (0 Replies)
Discussion started by: satish51392111
0 Replies
LEARN ABOUT FREEBSD
doveadm-kick
DOVEADM-KICK(1) Dovecot DOVEADM-KICK(1)
NAME
doveadm-kick - Disconnect users by user name and/or IP address
SYNOPSIS
doveadm [-Dv] kick [ -a anvil_socket_path] [-f] user
doveadm [-Dv] kick [ -a anvil_socket_path] [-f] ip[/mask]
doveadm [-Dv] kick [ -a anvil_socket_path] [-f] user ip[/mask]
DESCRIPTION
doveadm's kick command is used to disconnect users by user name and/or the ip address, from which they are connected.
In the first form, all users, whose login name matches the user argument, will be disconnected.
In the second form, all users, connected from the given IP address or network range, will be disconnected.
In the last form, only users connected from the given IP address or networks range and a matching login name will be disconnected.
OPTIONS
Global doveadm(1) options:
-D Enables verbosity and debug messages.
-v Enables verbosity, including progress counter.
Command specific options:
-a anvil_socket_path
This option is used to specify an absolute path to an alternative UNIX domain socket.
By default doveadm(1) will use the socket /var/run/dovecot/anvil. The socket may be located in another directory, when the default
base_dir setting was overridden in /etc/dovecot/dovecot.conf.
-f Enforce the disconnect, even when there are multiple users, from different networks, connected to a single process. This option may
be only required when you have configured something like:
service imap {
...
client_limit = 1+n
service_count = 0
...
}
ARGUMENTS
ip[/mask]
ip or ip/mask is the host or network, from which the users are connected.
user Is a user's login name. Depending on the configuration, a login name may be for example jane or john@example.com. It's also possi-
ble to use '*' and '?' wildcards (e.g. -u *@example.org).
EXAMPLE
If you don't want to disconnect all users at once, you can check who's currently logged in. The first example demonstrates how to discon-
nect all users whose login name is 3 characters long and begins with ba.
doveadm who -1 ja*
username proto pid ip
jane imap 8192 ::1
james imap 8203 2001:db8:543:2::1
doveadm kick ba?
kicked connections from the following users:
bar baz
The next example shows how to kick user foo's connections from 192.0.2.*.
doveadm who -1 foo
username proto pid ip
foo imap 8135 fd95:4eed:38ba::25
foo imap 9112 192.0.2.53
foo imap 8216 192.0.2.111
doveadm kick foo 192.0.2.0/24
kicked connections from the following users:
foo
doveadm who f*
username # proto (pids) (ips)
foo 1 imap (8135) (fd95:4eed:38ba::25)
REPORTING BUGS
Report bugs, including doveconf -n output, to the Dovecot Mailing List <dovecot@dovecot.org>. Information about reporting bugs is avail-
able at: http://dovecot.org/bugreport.html
SEE ALSO
doveadm(1), doveadm-who(1)
Dovecot v2.1 2010-06-12 DOVEADM-KICK(1)