10 More Discussions You Might Find Interesting
1. Solaris
Hi,
I have two Solaris 10 servers. First server crashed last week (Monday) and second one crashed over the weekend. I have checked the logs such as /var/adm/messages, syslog and dmesg. So for I found none. My management wants to know why the server crashed. I need to come with some kind of... (4 Replies)
Discussion started by: samnyc
4 Replies
2. IP Networking
If Freebsd DNS server that served 100 people is crashed. How to move this 100 people to a new FreeBSD DNS server as quickly as possible? (1 Reply)
Discussion started by: AIX_30
1 Replies
3. Solaris
Hi Admins,
In my local Vmware system i have installed solaris but while getting my root disk mirrored in svm I changed the vfstab entries and rebooted the server , the server got crashed, and now the root file systems and other filesystems are crashed.
Please help me in recovering this. (2 Replies)
Discussion started by: Laxxi
2 Replies
4. Linux
Hi everybody,
I want to find out all the processes that ran before a server crashed. Is that possible?
I've looked in /var/log/messages and found out that the system was out of memory.
A user probably wrote a script (in Perl or Python) that used up all available memory and crashed the... (11 Replies)
Discussion started by: z1dane
11 Replies
5. Solaris
My system is SUN Solaris 5.6 and one of the disks on the server got crashed. Here are the details
d23: Mirror
Submirror 0: d24
State: Okay
Submirror 1: d25
State: Okay
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
... (1 Reply)
Discussion started by: asalman.qazi
1 Replies
6. Linux
Hello,
Iam a running a apache webserver in CentOS and i get a heavy traffic about 2.5 lac pageviews daily and my db size is about 2GB. Now the problem is after serving some lacs of requests by apache....Both apache and mysql hangouts and the system gets hanged up...using all resources in the... (2 Replies)
Discussion started by: dheeraj4uuu
2 Replies
7. SuSE
Hi,
Running SLES 9 (update 4) on dell's poweredge 1950 server.
Kernel: 2.6.5-7.315-smp #1 SMP Wed Nov 26 13:03:18 UTC 2008 x86_64 x86_64 x86_64 GNU/Linux
Yesterday night my monitoring service emailed me system(ssh/smtp) unreachable...I tried connection through ssh, it did not let me through... (0 Replies)
Discussion started by: upengan78
0 Replies
8. AIX
My AIX 5.3 Machine Carshed
Can any one tell some way to find out what went wrong..
I mean debug why it got creahed... (3 Replies)
Discussion started by: pbsrinivas
3 Replies
9. UNIX for Dummies Questions & Answers
Hello
We had an old system designed in fortran that ran on a IBM RS6000 AIX 3.2 system. The person who designed is long gone. It was replaced with a completely different (non unix) system 6 years ago. We still used it for historical lookups of older information. Well yesterday it died. The... (5 Replies)
Discussion started by: billfaith
5 Replies
10. Post Here to Contact Site Administrators and Moderators
Gollum got crashed, needs Administrator's attention. Check this: https://www.unix.com/showthread.php?p=302093676 (0 Replies)
Discussion started by: tayyabq8
0 Replies
mountdtab(4) Kernel Interfaces Manual mountdtab(4)
NAME
mountdtab - Table of local file systems mounted by remote NFS clients
SYNOPSIS
/etc/mountdtab
DESCRIPTION
The mountdtab file resides in the /etc directory and contains a list of all remote hosts that have mounted local file systems using the NFS
protocols. Whenever a client performs a remote mount, the server machine's mount daemon makes an entry in the server machine's mountdtab
file. The umount command instructs the server's mount daemon to remove the entry. The umount -b command broadcasts to all servers and
informs them that they should remove all entries from mountdtab created by the sender of the broadcast message. By placing an umount -b
command in a system startup file, mountdtab tables on NFS servers can be purged of entries made by a crashed client, who, upon rebooting,
did not remount the same file systems that it had before the system crashed. Tru64 UNIX systems automatically call umount -b at system
startup
The format for entries in the mountdtab file is as follows: hostname:directory Rather than rewrite the mountdtab file on each umount
request, the mount daemon comments out unmounted entries by placing a number sign (#) in the first character position of the appropriate
line. The mount daemon rewrites the entire file, without commented out entries, no more frequently than every 30 minutes. The frequency
depends on the occurrence of umount requests.
The mountdtab table is used only to preserve information between crashes and is read only by the mountd daemon when it starts up. The
mountd daemon keeps an in-core table, which it uses to handle requests from programs like showmount and shutdown.
RESTRICTIONS
Although the mountdtab table is close to the truth, it may contain erroneous information if NFS client machines fail to execute a umount -a
command when they reboot.
RELATED INFORMATION
mount(8), umount(8), mountd(8), showmount(8), shutdown(8) delim off
mountdtab(4)