Login or Register to Ask a Question and Join Our Community


Red Hat

Kdump disk size

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Operating Systems Linux Red Hat Kdump disk size
# 1  
Old 01-11-2014
RedHat Kdump disk size
We have a Oracle linux 6.4 servers and memory is around 256GB, we are planing to configure kdump and I am confused about disk size I should set. I need your suggestion what would be the best size I should define for kdump.
# 2  
Old 01-12-2014
kdump can potentially dump the entire contents of your 256G of RAM into the dump file depending on your kdump configuration and the load on your system - so I would have at least that amount of disk space available.
# 3  
Old 01-12-2014
What should be the size of crash kernel in grub.conf. How to Calculate.
# 4  
Old 01-13-2014
I would just use "crashkernel=auto".

According to RHEL6 documentation:
Quote:
The kdump crash recovery service must have enough memory to be operational. To learn about minimum memory requirements of the Red Hat Enterprise Linux 6 system, read the Required minimums section of the Red Hat Enterprise Linux 6 technology capabilities and limits comparison chart. When the kdump service is enabled, the minimum memory requirements increase by the amount of memory reserved for it. The amount of reserved memory is either determined by the user, or when the crashkernel=auto option is used, it defaults to 128 MB plus 64 MB for each TB of physical memory (that is, a total of 192 MB for a system with 1 TB of physical memory).
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Help with kdump scripts

Hi I am trying hard to append a configuration file like # grub.conf generated by anaconda # # Note that you do not have to rerun grub after making changes to this file # NOTICE: You have a /boot partition. This means that # all kernel and initrd paths are relative to /boot/, eg. #... (7 Replies)
Discussion started by: tejessk
7 Replies

2. UNIX for Advanced & Expert Users

Physical disk IO size smaller than fragment block filesystem size ?

Hello, in one default UFS filesystem we have 8K block size (bsize) and 1K fragmentsize (fsize). At this scenary I thought all "FileSytem IO" will be 8K (or greater) but never smaller than the fragment size (1K). If a UFS fragment/blocksize is allwasy several ADJACENTS sectors on disk (in a ... (4 Replies)
Discussion started by: rarino2
4 Replies

3. Solaris

Help Me! Get size on each directory on each disk

Hi, I want to know how to get size of each directory and each sub-directory on each disk, assume i have 20 disk. Could you help me to find out the solution, please? Thanks (1 Reply)
Discussion started by: edydsuranta
1 Replies

4. SCO

Help with disk size in sco unix

when i try to find the disk size in a sco unix machine i am not quite sure about the commands df and df -k is there any other command to see what hardware raid it is built in and the total disk size any command similar to fdisk (4 Replies)
Discussion started by: robo
4 Replies

5. Solaris

Different disk size on different controllers

Hi folks, I just recently build myself a NAS with Oracle Solaris 11 Express. MOBO: Asus M4N68T-M LE V2 nForce 630a AM3 PCI-e Controller: 2x Exsys EX-3503 with Sil3132 Chipset (latest FW) HDD: 7x 2000GB Samsung EcoGreen F4 HD204UI 32MB 3.5" (latest FW) OS: SunOS zaruba 5.11 snv_151a i86pc... (4 Replies)
Discussion started by: Garter
4 Replies

6. Solaris

free size of disk group

Hello Good morning all, Am not understanding the size of subdisk & group(length &offset).how we need to calculate this? Can anyone suggest me ? Thanks, Gowtham ---------- Post updated at 12:48 PM ---------- Previous update was at 08:30 AM ---------- I got the answer ... if want the... (0 Replies)
Discussion started by: gowthamakanthan
0 Replies

7. UNIX for Dummies Questions & Answers

Solaris cmd - size of disk

Hi, What is the command to find the complete size of the hard disk on Solaris 10. ~vino (1 Reply)
Discussion started by: vino_hymi
1 Replies

8. UNIX for Dummies Questions & Answers

disk size help

Please could someone advise what disk size this would be ? Filesystem kbytes used avail capacity /dev/dsk/c0t1d0s2 282315967 65553 279427255 1% is it 280 meg ? regards venhart (2 Replies)
Discussion started by: venhart
2 Replies

9. UNIX for Dummies Questions & Answers

disk size

What is the easy way to see what size mydisk (total disk size) is ? similar to properties in windows ? Thanks. (7 Replies)
Discussion started by: xramm
7 Replies

10. UNIX for Dummies Questions & Answers

Size of Disk

First of all, hello there!!! Well, I' ve got one question: How may I get the size of the HD, I mean, wich command do I have to type? Thanks in advance, (6 Replies)
Discussion started by: saulolps
6 Replies
Login or Register to Ask a Question