Opened 12 years ago

Closed 12 years ago

Last modified 12 years ago

#3739 closed bug (invalid)

Published device diver doesn't work

Reported by: haiqu Owned by: marcusoverhagen
Priority: normal Milestone: R1
Component: Drivers/Disk Version: R1/pre-alpha1
Keywords: Cc:
Blocked By: Blocking:
Platform: All


Back in 2002 I wrote a Virtual Disk driver for development work. It set up a simple 64Mb BFS ramdisk that enabled faster compilation of projects.

On trying to port this code across, I find that it compiles and installs fine, and even publishes the driver properly. However, I cannot access it in any known way.

Following may show some useful stuff:

{{ ~> ls /dev/disk/virtual ram ~> mkfs -t bfs /dev/disk/virtual/ram Ram mkfs: Failed to get disk device for path /dev/disk/virtual/ram: No such file or directory }}

I also note that changing the name of /boot/system/bin/mkbfs to mkfs is rather annoying, especially since it can only do BFS anyhow.

Change History (5)

comment:1 by haiqu, 12 years ago

Damn. Once again:

~> ls /dev/disk/virtual
~> mkfs -t bfs /dev/disk/virtual/ram Ram mkfs: Failed to get disk device for path /dev/disk/virtual/ram: No such file or directory

comment:2 by stippi, 12 years ago

I can only comment on the mkbfs -> mkfs change. You are incorrect in that mkfs can only create BFS volumes. That's only the case because BFS is the only FS in Haiku which supports initializing partitions. It's _not_ a limitation of mkfs. That one has been written to support initializing any FS that supports initializing. Please don't assume we just change something for the sake of changing it without good reason.

comment:3 by haiqu, 12 years ago

In BeOS there were only two, mkbfs and mkfat. So having a single file with options is less efficient than writing compatibility scripts, which would result in three files total. Installation packages rely on this name being available.

comment:4 by axeld, 12 years ago

Resolution: invalid
Status: newclosed

Haiku is not BeOS.

Since mkfs relies on the disk device manager functionality, you should name your device "raw", as that's what the disk device driver protocol demands now (partitions are then published automatically, too).

comment:5 by haiqu, 12 years ago

Tried publishing to ram/raw but mkfs didn't format either ram or ram/raw and I couldn't see the driver from DriveSetup or the mount menu. Something definitely strange there, but since I've discovered the --use-gcc-pipe compilation option the need for it has diminished anyhow.

There are more interesting projects to chase.

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