On 20010726 Thierry Vignaud wrote:
>"J . A . Magallon" <[EMAIL PROTECTED]> writes:
>
>> Hi...
>>
>> I have found some problems with mount and special filesystems.
>
>\troll{nop. you've found problems in your brain.}
>
I love when people is polite.
>> This is the relevant part of my /etc/fstab:
>>
>> tmpfs /dev/shm tmpfs defaults,size=128M 0 0
>
>
>which should have been :
> none /tmp tmpfs defaults,size=128M 0 0
>
Well, man mount:
The proc file system is not associated with a special
device, and when mounting it, an arbitrary keyword, such
as proc can be used instead of a device specification.
(The customary choice none is less fortunate: the error
message `none busy' from umount can be confusing.)
<and devpts, tmpfs are just like proc>
It is even recommended that fake-device==fstype, so you get a usefull error
message.
>From kernel source, Documentation/Configure.help, (line 11812 in 2.4.7):
You should mount the filesystem somewhere to be able to use
POSIX shared memory. Adding the following line to /etc/fstab should
take care of things:
tmpfs /dev/shm tmpfs defaults 0 0
I have been trying to get again util-linux-2.11e, to triple check and compare
mount sources with 2.11f and 2.11h, and there is no normal mirror which contains
2.11e. Strange, isn't it ? Finally, I got 2.11e at www.ch.kernel.org. They did not
do any cleanup...
I rebuilt mount-2.11e:
werewolf:~/soft/util/util-linux-2.11e/mount# df
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/sda1 248895 83086 152959 36% /
/dev/sda2 3099292 2092872 848984 72% /usr
/dev/sda3 4095488 1603796 2283652 42% /home
/dev/sda5 1027768 8 975552 1% /toast
werewolf:~/soft/util/util-linux-2.11e/mount# ./mount -V
mount: mount-2.11e
werewolf:~/soft/util/util-linux-2.11e/mount# ./mount -a -t tmpfs
werewolf:~/soft/util/util-linux-2.11e/mount# df
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/sda1 248895 83086 152959 36% /
/dev/sda2 3099292 2092872 848984 72% /usr
/dev/sda3 4095488 1603796 2283652 42% /home
/dev/sda5 1027768 8 975552 1% /toast
/home/soft/util/util-linux-2.11e/mount/tmpfs
131072 0 131072 0% /dev/shm
werewolf:~/soft/util/util-linux-2.11e/mount# ./umount -a -t tmpfs
werewolf:~/soft/util/util-linux-2.11e/mount# df
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/sda1 248895 83092 152953 36% /
/dev/sda2 3099292 2092872 848984 72% /usr
/dev/sda3 4095488 1603796 2283652 42% /home
/dev/sda5 1027768 8 975552 1% /toast
werewolf:~/soft/util/util-linux-2.11e/mount# mount -V
mount: mount-2.11h
werewolf:~/soft/util/util-linux-2.11e/mount# mount -a -t tmpfs
werewolf:~/soft/util/util-linux-2.11e/mount# df
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/sda1 248895 83092 152953 36% /
/dev/sda2 3099292 2092872 848984 72% /usr
/dev/sda3 4095488 1603796 2283652 42% /home
/dev/sda5 1027768 8 975552 1% /toast
tmpfs 131072 0 131072 0% /dev/shm
Same compiler, same kernel, same everything, so the bug is in mount.
The truth is out there...........
--
J.A. Magallon # Let the source be with you...
mailto:[EMAIL PROTECTED]
Mandrake Linux release 8.1 (Cooker) for i586
Linux werewolf 2.4.7-ac1 #1 SMP Thu Jul 26 19:53:39 CEST 2001 i686
