By trying various combinations of options, I finally was able to find
one that stopped "remount" by pausing in the cifs mount helper
(prompting for a password), i can see a little more information:
Typing the command:
smfhome2:/home/stevef # remount /mnt /mnt1
I can see that "remount" invokes mount but with odd syntax
stevef@smfhome2:~> ps -Aelf | grep "mount"
0 S root 25024 25012 0 80 0 - 1779 wait 22:01 pts/4
00:00:00 /bin/mount -o remount,/mnt /mnt1
On Fri, May 16, 2008 at 9:51 PM, Steve French <smfrench@xxxxxxxxx> wrote:
> that is the point ... strace doesn't work on that command and I don't
> even know the syntax of the utility "remount" It seems to be
> something builtin to bash - very odd ....
>
> smfhome2:~ # mount /dev/sdb8 /mnt2
> smfhome2:~ # remount -o ro /dev/sdb8
> mount: you must specify the filesystem type
> smfhome2:~ # remount -o ro /dev/sdb8 -t ext3
> mount: /dev/sdb8 not mounted already, or bad option
> smfhome2:~ # remount -t ext3 -o ro /dev/sdb8
> mount: you must specify the filesystem type
> smfhome2:~ # remount -o ro -t ext3 /dev/sdb8
> mount: /dev/sdb8 not mounted already, or bad option
> smfhome2:~ # strace -f remount -o ro -t ext3 /dev/sdb8
> strace: remount: command not found
> smfhome2:~ # which strace
> /usr/bin/strace
> smfhome2:~ # which remount
> which: no remount in
> (/home/stevef/bin:/usr/local/bin:/usr/bin:/sbin:/usr/sbin:/bin:/usr/bin/X11:/usr/X11R6/bin:/usr/games:/usr/lib/mit/bin:/usr/lib/mit/sbin:/usr/lib/qt3/bin)
>
>
> On Fri, May 16, 2008 at 8:49 PM, Tetsuo Handa
> <penguin-kernel@xxxxxxxxxxxxxxxxxxx> wrote:
>> Steve French wrote:
>>> It may be calling that ... but I was typing: "remount" in bash and I
>>> don't see a bash alias for it or a command in the path named that.
>> Didn't you see MS_REMOUNT in the output of "strace"?
>>
>> # mount -t tmpfs none /dev/shm/
>> # strace mount -o remount,ro /dev/shm/ 2>&1 | grep mount
>> execve("/bin/mount", ["mount", "-o", "remount,ro", "/dev/shm/"], [/* 17 vars */]) = 0
>> open("/proc/mounts", O_RDONLY|O_LARGEFILE) = 3
>> stat64("/sbin/mount.tmpfs", 0xbffeb570) = -1 ENOENT (No such file or directory)
>> mount("none", "/dev/shm", 0x8c13d68, MS_MGC_VAL|MS_RDONLY|MS_REMOUNT, ""...) = 0
>>
>
>
>
> --
> Thanks,
>
> Steve
>
--
Thanks,
Steve
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