在 OSX 10.11.1 上运行 iosnoop 命令时，出现以下文本错误：
dtrace: invalid probe specifier
/*
* Command line arguments
*/
inline int OPT_dump = 0;
inline int OPT_device = 0;
inline int OPT_delta = 0;
inline int OPT_devname = 0;
inline int OPT_file = 0;
inline int OPT_args = 0;
inline int OPT_ins = 0;
inline int OPT_nums = 0;
inline int OPT_dtime = 0;
inline int OPT_mount = 0;
inline int OPT_start = 0;
inline int OPT_pid = 0;
inline int OPT_name = 0;
inline int OPT_end = 0;
inline int OPT_endstr = 0;
inline int FILTER = 0;
inline int PID = 0;
inline string DEVICE = ".";
inline string FILENAME = ".";
inline string MOUNT = ".";
inline string NAME = ".";
#pragma D option quiet
#pragma D option switchrate=10hz
/*
* Print header
*/
dtrace:::BEGIN
{
last_event[""] = 0;
/* print optional headers */
OPT_start ? printf("%-14s ","STIME") : 1;
OPT_end ? printf("%-14s ","TIME") : 1;
OPT_endstr ? printf("%-20s ","STRTIME") : 1;
OPT_devname ? printf("%-7s ","DEVICE") : 1;
OPT_ins ? printf("%-3s ","INS") : 1;
OPT_nums ? printf("%-3s %-3s ","MAJ","MIN") : 1;
OPT_delta ? printf("%-10s ","DELTA") : 1;
OPT_dtime ? printf("%-10s ","DTIME") : 1;
/* print main headers */
OPT_dump ?
printf("%s %s %s %s %s %s %s %s %s %s %s %s %s %s %s %s %s %s\n",
"TIME", "STIME", "DELTA", "DEVICE", "INS", "MAJ", "MIN", "UID",
"PID", "PPID", "D", "BLOCK", "SIZE", "MOUNT", "FILE", "PATH",
"COMM","ARGS") :
printf("%5s %5s %1s %8s %6s ", "UID", "PID", "D", "BLOCK", "SIZE");
OPT_args == 0 ? printf("%10s %s\n", "COMM", "PATHNAME") : 1;
OPT_args == 1 ? printf("%28s %s\n", "PATHNAME", "ARGS") : 1;
}
/*
* Check event is being traced
*/
io:::start
{
/* default is to trace unless filtering, */
self->ok = FILTER ? 0 : 1;
/* check each filter, */
(OPT_device == 1 && DEVICE == args[1]->dev_statname)? self->ok = 1 : 1;
(OPT_file == 1 && FILENAME == args[2]->fi_pathname) ? self->ok = 1 : 1;
(OPT_mount == 1 && MOUNT == args[2]->fi_mount) ? self->ok = 1 : 1;
(OPT_name == 1 && NAME == strstr(NAME, execname)) ? self->ok = 1 : 1;
(OPT_name == 1 && execname == strstr(execname, NAME)) ? self->ok = 1 : 1;
(OPT_pid == 1 && PID == pid) ? self->ok = 1 : 1;
}
/*
* Reset last_event for disk idle -> start
* this prevents idle time being counted as disk time.
*/
io:::start
/! pending[args[1]->dev_statname]/
{
/* save last disk event */
last_event[args[1]->dev_statname] = timestamp;
}
/*
* Store entry details
*/
io:::start
/self->ok/
{
/* these are used as a unique disk event key, */
this->dev = args[0]->b_edev;
this->blk = args[0]->b_blkno;
/* save disk event details, */
start_uid[this->dev, this->blk] = (int)uid;
start_pid[this->dev, this->blk] = pid;
start_ppid[this->dev, this->blk] = ppid;
start_args[this->dev, this->blk] = (char *)curpsinfo->pr_psargs;
start_comm[this->dev, this->blk] = execname;
start_time[this->dev, this->blk] = timestamp;
/* increase disk event pending count */
pending[args[1]->dev_statname]++;
self->ok = 0;
}
/*
* Process and Print completion
*/
io:::done
/start_time[args[0]->b_edev, args[0]->b_blkno]/
{
/* decrease disk event pending count */
pending[args[1]->dev_statname]--;
/*
* Process details
*/
/* fetch entry values */
this->dev = args[0]->b_edev;
this->blk = args[0]->b_blkno;
this->suid = start_uid[this->dev, this->blk];
this->spid = start_pid[this->dev, this->blk];
this->sppid = start_ppid[this->dev, this->blk];
self->sargs = (int)start_args[this->dev, this->blk] == 0 ?
"" : start_args[this->dev, this->blk];
self->scomm = start_comm[this->dev, this->blk];
this->stime = start_time[this->dev, this->blk];
this->etime = timestamp; /* endtime */
this->delta = this->etime - this->stime;
this->dtime = last_event[args[1]->dev_statname] == 0 ? 0 :
timestamp - last_event[args[1]->dev_statname];
/* memory cleanup */
start_uid[this->dev, this->blk] = 0;
start_pid[this->dev, this->blk] = 0;
start_ppid[this->dev, this->blk] = 0;
start_args[this->dev, this->blk] = 0;
start_time[this->dev, this->blk] = 0;
start_comm[this->dev, this->blk] = 0;
start_rw[this->dev, this->blk] = 0;
/*
* Print details
*/
/* print optional fields */
OPT_start ? printf("%-14d ", this->stime/1000) : 1;
OPT_end ? printf("%-14d ", this->etime/1000) : 1;
OPT_endstr ? printf("%-20Y ", walltimestamp) : 1;
OPT_devname ? printf("%-7s ", args[1]->dev_statname) : 1;
OPT_ins ? printf("%3d ", args[1]->dev_instance) : 1;
OPT_nums ? printf("%3d %3d ",
args[1]->dev_major, args[1]->dev_minor) : 1;
OPT_delta ? printf("%-10d ", this->delta/1000) : 1;
OPT_dtime ? printf("%-10d ", this->dtime/1000) : 1;
/* print main fields */
OPT_dump ?
printf("%d %d %d %s %d %d %d %d %d %d %s %d %d %s %s %s %s %S\n",
this->etime/1000, this->stime/1000, this->delta/1000,
args[1]->dev_statname, args[1]->dev_instance, args[1]->dev_major,
args[1]->dev_minor, this->suid, this->spid, this->sppid,
args[0]->b_flags & B_READ ? "R" : "W",
args[0]->b_blkno, args[0]->b_bcount, args[2]->fi_mount,
args[2]->fi_name, args[2]->fi_pathname, self->scomm, self->sargs) :
printf("%5d %5d %1s %8d %6d ",
this->suid, this->spid, args[0]->b_flags & B_READ ? "R" : "W",
args[0]->b_blkno, args[0]->b_bcount);
OPT_args == 0 ? printf("%10s %s\n", self->scomm, args[2]->fi_pathname)
: 1;
OPT_args == 1 ? printf("%28s %S\n",
args[2]->fi_pathname, self->sargs) : 1;
/* save last disk event */
last_event[args[1]->dev_statname] = timestamp;
/* cleanup */
self->scomm = 0;
self->sargs = 0;
}
/*
* Prevent pending from underflowing
* this can happen if this program is started during disk events.
*/
io:::done
/pending[args[1]->dev_statname] < 0/
{
pending[args[1]->dev_statname] = 0;
}
: probe description io:::start does not match any probes
在运行相同版本 OSX 的两台机器上测试并得到相同的错误。还在 10.10 上进行了测试，它可以正常工作。