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pvck: handle PVs with zero metadata copies

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This commit is contained in:
David Teigland 2019-09-30 16:20:17 -05:00
parent 1bfae5bf8e
commit 7368cf8e7d
2 changed files with 32 additions and 5 deletions
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14
test/shell/pvck-dump.sh
View File

@ -12,30 +12,35 @@
. lib/inittest
aux prepare_devs 3
aux prepare_devs 4
get_devs
dd if=/dev/zero of="$dev1" || true
dd if=/dev/zero of="$dev2" || true
dd if=/dev/zero of="$dev3" || true
dd if=/dev/zero of="$dev4" || true
pvcreate "$dev1"
pvcreate "$dev2"
pvcreate --pvmetadatacopies 2 "$dev3"
pvcreate --pvmetadatacopies 0 "$dev4"
vgcreate $SHARED $vg "$dev1" "$dev2" "$dev3"
pvck --dump headers "$dev1" > h1
pvck --dump headers "$dev2" > h2
pvck --dump headers "$dev3" > h3
pvck --dump headers "$dev4" > h4
grep "label_header at 512" h1
grep "label_header at 512" h2
grep "label_header at 512" h3
grep "label_header at 512" h4
grep "pv_header at 544" h1
grep "pv_header at 544" h2
grep "pv_header at 544" h3
grep "pv_header at 544" h4
grep "pv_header.disk_locn\[0\].offset 1048576" h1
grep "pv_header.disk_locn\[0\].offset 1048576" h2
@ -49,6 +54,10 @@ grep "pv_header.disk_locn\[2\].size 1044480" h1
grep "pv_header.disk_locn\[2\].size 1044480" h2
grep "pv_header.disk_locn\[2\].size 1044480" h3
not grep "pv_header.disk_locn\[3\].size" h4
not grep "pv_header.disk_locn\[4\].size" h4
not grep "mda_header" h4
grep "mda_header_1 at 4096" h1
grep "mda_header_1 at 4096" h2
grep "mda_header_1 at 4096" h3
@ -75,8 +84,11 @@ not grep CHECK h3
pvck --dump metadata "$dev1" > m1
pvck --dump metadata "$dev2" > m2
pvck --dump metadata "$dev3" > m3
pvck --dump metadata "$dev4" > m4
pvck --dump metadata --pvmetadatacopies 2 "$dev3" > m3b
grep "zero metadata copies" m4
diff m1 m2
diff m1 m3

23
tools/pvck.c
View File

@ -740,7 +740,8 @@ static int _dump_label_and_pv_header(struct cmd_context *cmd, int print_fields,
struct device *dev,
int *found_label,
uint64_t *mda1_offset, uint64_t *mda1_size,
uint64_t *mda2_offset, uint64_t *mda2_size)
uint64_t *mda2_offset, uint64_t *mda2_size,
int *mda_count_out)
{
char str[256];
struct label_header *lh;
@ -900,6 +901,8 @@ static int _dump_label_and_pv_header(struct cmd_context *cmd, int print_fields,
mda_count++;
}
*mda_count_out = mda_count;
/* all-zero dlocn struct is area list end */
if (print_fields) {
log_print("pv_header.disk_locn[%d] at %llu # location list end", di,
@ -1117,6 +1120,7 @@ static int _dump_headers(struct cmd_context *cmd,
const char *pv_name;
uint64_t mda1_offset = 0, mda1_size = 0, mda2_offset = 0, mda2_size = 0;
uint32_t mda1_checksum, mda2_checksum;
int mda_count = 0;
int bad = 0;
pv_name = argv[0];
@ -1129,9 +1133,14 @@ static int _dump_headers(struct cmd_context *cmd,
label_scan_setup_bcache();
if (!_dump_label_and_pv_header(cmd, 1, dev, NULL,
&mda1_offset, &mda1_size, &mda2_offset, &mda2_size))
&mda1_offset, &mda1_size, &mda2_offset, &mda2_size, &mda_count))
bad++;
if (!mda_count) {
log_print("zero metadata copies");
return ECMD_PROCESSED;
}
/* N.B. mda1_size and mda2_size may be different */
/*
@ -1180,6 +1189,7 @@ static int _dump_metadata(struct cmd_context *cmd,
const char *tofile = NULL;
uint64_t mda1_offset = 0, mda1_size = 0, mda2_offset = 0, mda2_size = 0;
uint32_t mda1_checksum, mda2_checksum;
int mda_count = 0;
int mda_num = 1;
int bad = 0;
@ -1202,9 +1212,13 @@ static int _dump_metadata(struct cmd_context *cmd,
label_scan_setup_bcache();
if (!_dump_label_and_pv_header(cmd, 0, dev, NULL,
&mda1_offset, &mda1_size, &mda2_offset, &mda2_size))
&mda1_offset, &mda1_size, &mda2_offset, &mda2_size, &mda_count))
bad++;
if (!mda_count) {
log_print("zero metadata copies");
return ECMD_PROCESSED;
}
/*
* The first mda is always 4096 bytes from the start of the device.
@ -1249,10 +1263,11 @@ static int _dump_found(struct cmd_context *cmd, struct device *dev,
uint64_t mda1_offset = 0, mda1_size = 0, mda2_offset = 0, mda2_size = 0;
uint32_t mda1_checksum = 0, mda2_checksum = 0;
int found_label = 0, found_header1 = 0, found_header2 = 0;
int mda_count = 0;
int bad = 0;
if (!_dump_label_and_pv_header(cmd, 0, dev, &found_label,
&mda1_offset, &mda1_size, &mda2_offset, &mda2_size))
&mda1_offset, &mda1_size, &mda2_offset, &mda2_size, &mda_count))
bad++;
if (found_label && mda1_offset) {