No da0s1 file in /dev

dead_rabbit

dead_rabbit

Generally when I plug a USB stick into my system a file addressing the first partition on the device (da0s1) appears in /dev. I reinstalled my system recently to utilize the ZFS file system. Now when I plug in a flash drive the system acknowledges its presence by reporting
Code: 
da0 at umass-sim0 bus 0 scbus0 target 0 lun 0
da0: <Lexar JD 360 1100> Removable Direct Access SCSI-0 device 
da0: 40.000MB/s transfers
da0: 956MB (1957888 512 byte sectors: 64H 32S/T 956C)
But no da0s1 file appears in in /dev, even when I have created the partition on this system. What gives?

$ uname -a
Code: 
FreeBSD hs1.VERBENA 8.2-STABLE FreeBSD 8.2-STABLE #1: Mon Jul  4 11:35:06 MST 2011 
root@hs1.VERBENA:/usr/obj/usr/src/sys/AMDKERN  amd64
 
I ran # file -s /dev/da0 and it looks as though it sees the partition
Code: 
/dev/da0: x86 boot sector; partition 1: ID=0xc, active, starthead 1, startsector 32, 1957856 sectors, code offset 0x31
But I am still unable to mount the drive. No da0s1 file shows up in /dev and # mount_msdosfs /dev/da0 /mnt produces
Code: 
mount_msdosfs: /dev/da0: Invalid argument
 
SirDice, I have tried that and I get
Code: 
mount_msdosfs: /dev/da0s1: No such file or directory

mav@, I tried # false>/dev/da0 and then proceeded to attempt to mount the drive, but nothing changes. I tested mounting different flash drives as well but the same problem persists regardless of what drive I use.
 
Let's back up a bit and check some basic assumptions. Are you doing this as root? Have any defaults been changed, like securelevel? Is devd(8) enabled and running?
 
I am indeed running as root and devd seems to be running
# ps -A | grep devd
Code: 
 876  ??  Is     0:00.02 /sbin/devd

# mount -t msdosfs -o large /dev/da0 /mnt yielded nothing new.
 
If this memory stick works correctly on a Windows system, not a lot of other things come to mind. There could be a misformed partition table or MS-DOS filesystem that FreeBSD doesn't like; sometimes memory cards formatted by cameras are like that. Reformatting it with Windows or using fdisk(8) and newfs_msdos(8) on FreeBSD, is worth a try.
 
[cmd=]ls -lac /dev | grep da [/cmd]

How many devices show up (after a camcontrol rescan all (just in case the latter matters btw)).
 
# ls -lac /dev | grep da
Code: 
crw-r-----   1 root  operator    0, 125 Jul  6 13:08 da0
No change is produced by # camcontrol rescan all
 
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