.SH NAME
lfs df \- report Lustre filesystem disk usage
.SH SYNOPSIS
-.BR "lfs df" " [" -i "] [" -h "] [" --lazy "] [" --pool | -p
+.BR "lfs df" " [" -i "] [" -h | -H ]
+.RB [ --lazy | -l ]
+.RB [ --pool | -p
.IR <fsname> [. <pool> ]]
-.RB [ -v ]
+.RB [ --verbose | -v ]
.RI [ path ]
.SH DESCRIPTION
.B lfs df
for ZFS targets via
.BR zed (8),
or a (user-supplied) script that monitors the target device and sets
-.B lctl set_param obdfilter.\fI<target>\fB.degraded=1
+.B 'lctl set_param obdfilter.\fI<target>\fB.degraded=1'
on the OST. This target will be avoided for new allocations, but
will still be used for existing files located there or if there are
not enough non-degraded OSTs to make up a widely-striped file.
.TP
+.B N: no-precreate
+The target is configured to deny object precreation by the
+.B 'lctl set_param obdfilter.\fI<target>\fB.no_precreate=1'
+parameter or
+.B '-o no_precreate'
+mount option. This may be done to add an OST to the filesystem without
+allowing objects to be allocated on it yet, or for other reasons.
+.TP
.B R: read-only
The target filesystem is marked read-only due to filesystem
corruption detected by ldiskfs or ZFS. No modifications are
.B I: out-of-inodes
The target filesystem has less than the minimum required free inodes and
will not be used for new object allocations until it has more free inodes.
+.TP
+.B f: flash
+The target filesystem is using a flash (non-rotational) storage device.
+This lower-case status is only shown in conjunction with the
+.B -v
+option, since it is not an error condition.
.RE
.SH OPTIONS
The various options supported by
.TP
.BR -h ", " --human-readable
Print output in a human readable format (e.g. 16.3T, 4.25P).
-Suffixes are SI base-2 units (i.e. 1 GiB = 1024 MiB).
+Suffixes are base-2 units (i.e. 1 GiB = 1024 MiB).
+.TP
+.BR -H ", " --si
+Like
+.BR -h ,
+but suffixes are SI base-10 units (i.e. 1 GB = 1000 MB).
.TP
.BR -i ", " --inodes
Print information about the inode usage and totals for the MDTs and
.BI "lfs df --pool=" "pool /mnt/fsname"
.TP
.BR -v ", " --verbose
-Show deactivated MDTs and OSTs in the listing. By default, any
+Show deactivated MDTs and OSTs in the listing, along with any
+additional status flags for each MDT and OST. By default, any
MDTs and OSTs that are deactivated by the administrator are not shown.
However, targets that are only temporarily inaccessible are still shown.
.SH EXAMPLES
.TP
-.B $ lfs df -h /mnt/testfs
+.B $ lfs df -hv /mnt/testfs
Lists space usage per OST and MDT for the
.B testfs
filesystem in human readable format.
and
.B testfs-OST0002
targets are currently marked
-.B degraded
+.BR D egraded
(perhaps they both share the same underlying storage controller),
while
.B testfs-OST0002
is also marked
-.B read-only
-after detecting non-recoverable corruption in the filesystem.
+.BR R ead-only,
+after detecting non-recoverable corruption in the backing filesystem.
.TP
-.B $ lfs df -i
+.B $ lfs df -iH
List inode usage per OST and MDT for all mounted Lustre filesystems.
.RS 0.75i
UUID Inodes IUsed IFree IUse% Mounted on
.br
-testfs-MDT0000_UUID 932160 884609 47551 95% /testfs[MDT:0]
+testfs-MDT0000_UUID 932.2k 884.6k 47.6k 95% /testfs[MDT:0]
.br
-testfs-OST0000_UUID 267456 179649 87807 67% /testfs[OST:0]
+testfs-OST0000_UUID 267.5k 179.6k 87.8k 67% /testfs[OST:0]
.br
-testfs-OST0001_UUID 268864 173466 95398 64% /testfs[OST:1] D
+testfs-OST0001_UUID 268.9k 173.5k 95.4k 64% /testfs[OST:1] D
.br
-testfs-OST0002_UUID 267456 169575 97881 63% /testfs[OST:2] DR
+testfs-OST0002_UUID 267.5k 169.6k 97.9k 63% /testfs[OST:2] DR
.br
OST0003 : inactive device
.br
-testfs-OST0006_UUID 426144 377448 48696 88% /testfs[OST:3]
+testfs-OST0006_UUID 426.1k 377.4k 48.7k 88% /testfs[OST:3]
.br
-filesystem_summary: 932160 884609 47551 95% /testfs
+filesystem_summary: 932.1k 884.6k 47.6k 95% /testfs
.br
.RE
.TP
MNTDF_LAZY = 0x0004,
MNTDF_VERBOSE = 0x0008,
MNTDF_SHOW = 0x0010,
+ MNTDF_DECIMAL = 0x0020,
};
-#define COOK(value) \
+#define COOK(value, base) \
({ \
int radix = 0; \
- while (value > 1024) { \
- value /= 1024; \
+ while (value > base) { \
+ value /= base; \
radix++; \
} \
radix; \
{
long long avail, used, total;
int ratio = 0;
- char *suffix = "KMGTPEZY";
+ char *suffix = flags & MNTDF_DECIMAL ? "kMGTPEZY" : "KMGTPEZY";
/* Note if we have >2^64 bytes/fs these buffers will need to be grown */
char tbuf[3 * sizeof(__u64)];
char ubuf[3 * sizeof(__u64)];
ratio = obd_statfs_ratio(stat, flags & MNTDF_INODES);
if (flags & MNTDF_COOKED) {
- int i;
+ int base = flags & MNTDF_DECIMAL ? 1000 : 1024;
double cook_val;
+ int i;
cook_val = (double)total;
- i = COOK(cook_val);
+ i = COOK(cook_val, base);
if (i > 0)
snprintf(tbuf, sizeof(tbuf), HDF, cook_val,
suffix[i - 1]);
snprintf(tbuf, sizeof(tbuf), CDF, total);
cook_val = (double)used;
- i = COOK(cook_val);
+ i = COOK(cook_val, base);
if (i > 0)
snprintf(ubuf, sizeof(ubuf), HDF, cook_val,
suffix[i - 1]);
snprintf(ubuf, sizeof(ubuf), CDF, used);
cook_val = (double)avail;
- i = COOK(cook_val);
+ i = COOK(cook_val, base);
if (i > 0)
snprintf(abuf, sizeof(abuf), HDF, cook_val,
suffix[i - 1]);
int c, rc = 0, index = 0;
char fsname[PATH_MAX] = "", *pool_name = NULL;
struct option long_opts[] = {
- { .val = 'h', .name = "human-readable",
- .has_arg = no_argument },
+ { .val = 'h', .name = "human-readable", .has_arg = no_argument },
+ { .val = 'H', .name = "si", .has_arg = no_argument },
{ .val = 'i', .name = "inodes", .has_arg = no_argument },
{ .val = 'l', .name = "lazy", .has_arg = no_argument },
{ .val = 'p', .name = "pool", .has_arg = required_argument },
{ .val = 'v', .name = "verbose", .has_arg = no_argument },
{ .name = NULL} };
- while ((c = getopt_long(argc, argv, "hilp:v", long_opts, NULL)) != -1) {
+ while ((c = getopt_long(argc, argv, "hHilp:v", long_opts, NULL)) != -1) {
switch (c) {
case 'h':
- flags |= MNTDF_COOKED;
+ flags = (flags & ~MNTDF_DECIMAL) | MNTDF_COOKED;
+ break;
+ case 'H':
+ flags |= MNTDF_COOKED | MNTDF_DECIMAL;
break;
case 'i':
flags |= MNTDF_INODES;
git://git.whamcloud.com / fs / lustre-release.git / commitdiff