In <Pine.SOL.3.95.1000219155928.19088H-100000@chia.umiacs.umd.edu> ADAM Sulmicki (adam@cfar.umd.edu) wrote:
> Hello,
> Solaris has something called tmpfs. Some ppl wanted it under
> linux.
> An easy way to do is create ramdisk and then just mount it
> as /tmp. It comes out especially handy if you boot whole
> system in readonly mode and some programs require writable
> tmp (like X for its pipes).
> I used to do something like
> mke2fs -vm0 /dev/ram 2048
> mount /dev/ram /tmp
> and it used to work like charm. However, unfortunatelly, it
> does not work for me anymore :( Any idea what changed?
Ramdisk is broken (again). Now ramdisk by itself work somehow but you can
not mount filesystem from it (neither "normal" nor initrd).
> ----------------------------------------------------------------------------
> ----------------------------------------------------------------------------
> [root@pepsi adam]# /sbin/mke2fs -vm0 /dev/ram 2048
> mke2fs 1.17, 26-Oct-1999 for EXT2 FS 0.5b, 95/08/09
> Filesystem label=
> OS type: Linux
> Block size=1024 (log=0)
> Fragment size=1024 (log=0)
> 256 inodes, 2048 blocks
> 0 blocks (0.00%) reserved for the super user
> First data block=1
> 1 block group
> 8192 blocks per group, 8192 fragments per group
> 256 inodes per group
> Writing inode tables: done
> Writing superblocks and filesystem accounting information: done
> [root@pepsi adam]# mount /dev/ram /mnt2 -t ext2
> mount: wrong fs type, bad option, bad superblock on /dev/ram,
> or too many mounted file systems
> [relevant part of dmesg]
> MSDOS: Hardware sector size is 1024
> fatfs: bogus cluster size
> VFS: Can't find a valid MSDOS filesystem on dev 01:01.
> VFS: Can't find an ext2 filesystem on dev ramdisk(1,1).
> ----------------------------------------------------------------------------
> ----------------------------------------------------------------------------
> [root@pepsi adam]# /sbin/mke2fs -V
> mke2fs 1.17, 26-Oct-1999 for EXT2 FS 0.5b, 95/08/09
> Using EXT2FS Library version 1.17
> [root@pepsi adam]# mount -V
> mount: mount-2.9u
> [root@pepsi adam]# uname -a
> Linux pepsi 2.3.42 #240 SMP Tue Feb 1 18:57:15 EST 2000 i686 unknown
> [root@pepsi adam]# cat /proc/filesystems
> ext2
> nodev proc
> nodev nfs
> iso9660
> nodev devpts
> vfat
> [root@pepsi adam]#
> ----------------------------------------------------------------------------
> ----------------------------------------------------------------------------
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This archive was generated by hypermail 2b29 : Wed Feb 23 2000 - 21:00:24 EST