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Dashes for zero latency values in zpool iostat -p

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This prints dashes instead of zeros for zero latency values in
'zpool iostat -p'.  You'll get zero latencies reported when the
disk is idle, but technically a zero latency is invalid, since you
can't measure the latency of doing nothing.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #6210
This commit is contained in:
Tony Hutter
2017-06-22 09:39:01 -07:00
committed by Brian Behlendorf
parent d9ad3fea3b
commit 29eb494285
3 changed files with 19 additions and 4 deletions
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include/libzfs.h
+11 -1
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@@ -775,11 +775,21 @@ extern int zfs_unshareall(zfs_handle_t *);
extern int zfs_deleg_share_nfs(libzfs_handle_t *, char *, char *, char *,
void *, void *, int, zfs_share_op_t);
/*
* Formats for iostat numbers. Examples: "12K", "30ms", "4B", "2321234", "-".
*
* ZFS_NICENUM_1024: Print kilo, mega, tera, peta, exa..
* ZFS_NICENUM_BYTES: Print single bytes ("13B"), kilo, mega, tera...
* ZFS_NICENUM_TIME: Print nanosecs, microsecs, millisecs, seconds...
* ZFS_NICENUM_RAW: Print the raw number without any formatting
* ZFS_NICENUM_RAWTIME: Same as RAW, but print dashes ('-') for zero.
*/
enum zfs_nicenum_format {
ZFS_NICENUM_1024 = 0,
ZFS_NICENUM_BYTES = 1,
ZFS_NICENUM_TIME = 2,
ZFS_NICENUM_RAW = 3
ZFS_NICENUM_RAW = 3,
ZFS_NICENUM_RAWTIME = 4
};
/*