Date: Sun, 7 Apr 1996 02:57:39 +1000 From: Bruce Evans <bde@zeta.org.au> To: freebsd-current@FreeBSD.ORG, j@uriah.heep.sax.de Subject: Re: devfs questions Message-ID: <199604061657.CAA02813@godzilla.zeta.org.au>
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>Alas, the next would be fsck'ing, and so the big question is: how are >the slice and partition entries supposed to be created? This doesn't work right yet. Initially there are only whole-disk device names. Opening these creates the slice device names. Opening the slices creates the partition device names. I think the root partition gets opened by number (dev_t) so all the slice names and all the partitions on the root slice get created. Opening everything at attach time would probably work OK for fixed media. It fails for removable media. Consider floppies. Due to your second-favourite PC design feature (:-), there is no good way to tell if there is a floppy in the drive. I've just fixed the floppy devfs names. The unit numbering was wrong (fd1 was type 8), the links to fd.xxxx were bogus, and most of the fd.xxxx's weren't created. There are now too many devices: fd0 fd0f fd1c rfd0.820 rfd1.360 fd0.1200 fd0g fd1d rfd0a rfd1.720 fd0.1440 fd0h fd1e rfd0b rfd1.800 fd0.1480 fd1 fd1f rfd0c rfd1.820 fd0.1720 fd1.1200 fd1g rfd0d rfd1a fd0.720 fd1.1440 fd1h rfd0e rfd1b fd0.800 fd1.1480 rfd0 rfd0f rfd1c fd0.820 fd1.360 rfd0.1200 rfd0g rfd1d fd0a fd1.720 rfd0.1440 rfd0h rfd1e fd0b fd1.800 rfd0.1480 rfd1 rfd1f fd0c fd1.820 rfd0.1720 rfd1.1200 rfd1g fd0d fd1a rfd0.720 rfd1.1440 rfd1h fd0e fd1b rfd0.800 rfd1.1480 Note that fd0.360 doesn't exist since fd0 is 1440K, and fd1.1720 doesn't exist since fd1 is 1200K. The devices [r]fd[0-1][a-h] are fairly useless links to [r]fd[0-1]. The 1480K and 1720K devices are actually 1476K and 1722K and should be renamed. I normally use a sliced version of this which only generates whole-disk devices except of course when there are real partitions. Slicing and partitioning of the fd.xxxx devices isn't supported. Bruce
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