-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Wednesday 18 June 2003 03:04 pm, Robert P. J. Day wrote: [...] > from what i've read, i can create a number of ram disks > corresponding to /dev/ram[012345...], by doing the following: > > # dd if=/dev/zero of=/dev/ram0 bs=1024 count=16 > > for a tiny ram disk of 16k (supposedly). so what actually > happens? > > if i try to create an ext2 filesystem on it: > > # mke2fs /dev/ram0 > > it works, but it's obvious that it's 4M in size -- the > default. i didn't *ask* for the default size, i was hoping > i could pick the size myself. but i get 4M anyway.
That's the thing about defaults, you don't have to ask. ;) You can specify how large to make the file system, though. The smallest I've been able to actually create is 64k. Anything smaller results in: # /sbin/mkfs -t ext2 -m 0 /dev/ram1 48 mke2fs 1.27 (8-Mar-2002) /dev/ram1: Not enough space to build proposed filesystem while setting up superblock # dd if=/dev/zero of=/dev/ram1 bs=1024 count=64 # /sbin/mkfs -t ext2 -m 0 /dev/ram1 64 # mount /dev/ram1 /tmp/ramdisk/ # df /tmp/ramdisk/ Filesystem 1K-blocks Used Available Use% Mounted on /dev/ram1 57 13 44 23% /tmp/ramdisk > 2) once i create a ram disk, is there an indicator that tells > me that such a thing exists? i mean, "free" will show me > that there's less free space, but that's about it. is there > maybe an entry under /proc keeping track of ram disks? > you know ... maybe /proc/list_of_ram_disks?? :-) > > 3) once i create one (even if i'm still stuck with 4M), how > can i manually release it? and again, is there a way to > verify the return of that ram disk space to the OS? Not sure on either, to be honest. - -- - -Michael pgp key: http://www.tuxfan.homeip.net:8080/gpgkey.txt Red Hat Linux 7.{2,3}|8.0 in 8M of RAM: http://www.rule-project.org/ - -- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (GNU/Linux) iD8DBQE+8Snjn/07WoAb/SsRAnSUAKCPDxVqb/xqCXlPVNv3FVo+XyQl2QCePXXH hUz0znmZ8CmaPAzf5myRWZI= =peiF -----END PGP SIGNATURE----- -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED] https://www.redhat.com/mailman/listinfo/redhat-list
