Re: where is remount?

["Steve French" <smfrench@gmail.com>]

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@i-love.sakura.ne.jp> 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