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egorgry
Asked: 2012-07-11 04:25:43 +0800 CST

Create a 2GB ram disk results in error

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I'm trying to crete a ramdisk of 2gb in centOS 6.2 and the error I get is the following. Any help would be greatly appreciated.

[root@ssb1 ~]# mkfs -q /dev/ram0 2147483648
 mkfs.ext2: Filesystem larger than apparent device size.
 Proceed anyway? (y,n)

grub.conf

title CentOS (2.6.36.4)
    root (hd0,0)
    kernel /vmlinuz-2.6.36.4 ro root=UUID=be58af32-27ac-45fe-8341-715df43497ac rd_NO_LUKS rd_NO_LVM rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us crashkernel=auto rhgb quiet raid=noautodetect elevator=noop ramdisk_size=2147483648

Memory info

[root@ssb1 ~]# free
             total       used       free     shared    buffers     cached
Mem:      49455672    3185524   46270148          0      18228     164792
-/+ buffers/cache:    3002504   46453168
Swap:            0          0          0
linux ramdisk centos6.2

2 Answers

  1. Best Answer
    • 1

  2. Is this a 32 bit OS or a 64 bit OS?

    It looks like you are using 3GB of RAM already and creating a 2GB RAM disk would put you over that magic 4GB mark that 32 bit systems can't handle.

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