Questions tagged [ramdisk]

A RAM disk or RAM drive is a block of RAM (primary storage or volatile memory) that a computer's software is treating as if the memory were a disk drive (secondary storage).

13 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
1 vote
0 answers
1k views

Memory usage: big difference in `free -m` and htop as well calculation of used memory in htop compared from /proc/meminfo

I'm aware of this question https://stackoverflow.com/questions/41224738/how-to-calculate-system-memory-usage-from-proc-meminfo-like-htop Answer seems outdated regarding memory usage and this question ...
Hannes's user avatar
  • 327
1 vote
0 answers
510 views

Virtual disks raid 10 array with ramdisk cache using bcache

I was trying to simulate a scenario with mdadm and bcache. I created 4 raw img files using qemu-img. I have created raid 10 using mdadm and created tmpfs on /mnt/ramdisk and created a raw ramdisk.img ...
Gediz GÜRSU's user avatar
1 vote
0 answers
440 views

Take existing linux install and make it pxeboot

Is there any way I can take an existing install of debian that I have on a usb drive and make it so I can pxeboot it as a ramdisk image? Almost everything I find online is about making a image boot ...
NoName's user avatar
  • 19
1 vote
1 answer
263 views

CentOS tmpfs mount doubling up?

Everytime I mount a ramdisk with the following command, I get two instead of one ramdisk? mount -t tmpfs -o size=1024M tmpfs /home/site/public_html/var/cache Mount shows no ramdisks mounted prior, ...
cappuccino's user avatar
1 vote
1 answer
908 views

Monitor ramdisk throughput

I was wondering if there was a tool available to monitor the current ramdisk throughput. I found that with sysstat, iostat, etc. I am only able to monitor the current throughtput of physical devices. ...
fasseg's user avatar
  • 111
0 votes
1 answer
375 views

freeze on "Loading initial ramdisk" debian 9

I have a functional debian 9 (kernel 4.9.0-19-amd64) on an old pc, I made an image of this debian with clonezilla and I put it on a newer pc... I know it's bad ^^ My concern is that when I boot ...
ArnOCP's user avatar
  • 11
0 votes
1 answer
159 views

Creating a ramdisk with lvmvdo persistent across reboot?

I am trying to create a persistent ramdisk with lvmvdo with the below unit file but it does not seem to work.I have not added the --type vdo option to the lvcreate command yet ( this is for RHEL9 ) [...
munish's user avatar
  • 151
0 votes
0 answers
61 views

Why apache2 mod_cache_disk cant store files in ramdisk?

I use Apache2 mod_cache_disk with symlink to my ramdisk: /tmp/ramdisk/mod_cache_disk but I cant get it to work :( It only works when path leads to real directory. How can I fix this problem ?
Macsurf's user avatar
  • 51
0 votes
0 answers
49 views

Split initrd into smaller files

I would like to know if it's possible to have a split initrd implementation. Our reason for doing this, is the fact that our Fedora based application uses a stripped version of Fedora underneath with ...
jbbletterman's user avatar
0 votes
0 answers
224 views

ZFS on ramdrive optimal settings

After failing to configure ZFS for file creation and deletion without subsequent disk IO (Ramdisk like ZFS behavior), I'm creating ZFS over ramdrive. What to do with compression (but that part I ...
ISanych's user avatar
  • 111
0 votes
0 answers
1k views

Is it possible to place the system temp directory in a RAM disk?

The problem is that the system temp directory is required when machine installs updates first thing after a restart. My RAM disk, however, starts through HKLM\Software\Microsoft\Windows\CurrentVerison\...
mark's user avatar
  • 755
0 votes
1 answer
2k views

Getting the ramdisk id of an amazon elastic cloud storage?

I ran ec2-describe-instances, on which i got the output as INSTANCE i-14305121 ami-bf1d8a8f ec2-54-244-161-27.us-west-2.compute.amazonaws.com ip-10-244-164-7.us-west-2.compute.internal ...
kenzo450D's user avatar
-1 votes
3 answers
724 views

Script errors when run by launchd at startup, but not when run in Terminal

I'm attempting to create a RAM disk that loads the previous contents when the system starts up, and every six hours writes the contents to a disk image. Currently, when you run the script from the ...
user avatar