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Old 09-30-2010, 03:24 AM   #1
dotilaso
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Registered: Jul 2010
Posts: 4

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Unhappy can't find RAMDISK initialized


I am trying to config the RAM disk on CentOS 5.5

/etc/grub.conf
title CentOS (2.6.18-194.el5)
root (hd0,0)
kernel /vmlinuz-2.6.18-194.el5 ro root=/dev/VolGroup00/LogVol00 rhgb quiet ramdisk_size=2048000
initrd /initrd-2.6.18-194.el5.img

#reboot

root@dl360-157# ls -al /dev/ram*
lrwxrwxrwx 1 root root 4 Sep 30 15:02 /dev/ram -> ram1
brw-r----- 1 root disk 1, 0 Sep 30 15:02 /dev/ram0
brw-r----- 1 root disk 1, 1 Sep 30 15:02 /dev/ram1
brw-r----- 1 root disk 1, 10 Sep 30 15:02 /dev/ram10
brw-r----- 1 root disk 1, 11 Sep 30 15:02 /dev/ram11
brw-r----- 1 root disk 1, 12 Sep 30 15:02 /dev/ram12
brw-r----- 1 root disk 1, 13 Sep 30 15:02 /dev/ram13
brw-r----- 1 root disk 1, 14 Sep 30 15:02 /dev/ram14
brw-r----- 1 root disk 1, 15 Sep 30 15:02 /dev/ram15
brw-r----- 1 root disk 1, 2 Sep 30 15:02 /dev/ram2
brw-r----- 1 root disk 1, 3 Sep 30 15:02 /dev/ram3
brw-r----- 1 root disk 1, 4 Sep 30 15:02 /dev/ram4
brw-r----- 1 root disk 1, 5 Sep 30 15:02 /dev/ram5
brw-r----- 1 root disk 1, 6 Sep 30 15:02 /dev/ram6
brw-r----- 1 root disk 1, 7 Sep 30 15:02 /dev/ram7
brw-r----- 1 root disk 1, 8 Sep 30 15:02 /dev/ram8
brw-r----- 1 root disk 1, 9 Sep 30 15:02 /dev/ram9
lrwxrwxrwx 1 root root 4 Sep 30 15:02 /dev/ramdisk -> ram0

root@dl360-157# dmesg | grep RAMDISK
root@dl360-157# <nothing like RAMDISK driver initialized shows>

what steps are missing ?

thanks
 
Old 09-30-2010, 04:29 AM   #2
gdejonge
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Registered: Aug 2010
Location: Netherlands
Distribution: Kubuntu, Debian, Suse, Slackware
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First: Just try to create a filesystem on /dev/ramdisk and tell us if you succeed.
Second: Do you really need a 2GB ramdisk?

_____________
Gerrard
 
1 members found this post helpful.
Old 10-04-2010, 02:00 AM   #3
dotilaso
LQ Newbie
 
Registered: Jul 2010
Posts: 4

Original Poster
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Smile

Thanks, a file system can be created on ramdisk.
2G is needed because it is for caching a lot of trading data
 
  


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