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When moving the cluster log server into the LVM tree, the in memory

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bitmap tracking was switched from the e2fsprogs implementation to
the device-mapper implementation (dm_bitset_t).  The latter has a
leading uin32_t field designed to hold the number of bits that are
being tracked.  The code was not properly handling this change in
all places.  Specifically, when getting the bitmap to/from disk.

Endian adjustments will likely need to be made on the accounting
field as well, since bitmaps are passed between machines on
start-up.

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
This commit is contained in:
Jonathan Earl Brassow 2010-01-15 18:48:24 +00:00
parent eb9454ab68
commit 3579eeb2b0
2 changed files with 37 additions and 19 deletions
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1
WHATS_NEW
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@ -1,5 +1,6 @@
Version 2.02.59 -
===================================
Fix cluster log issues with in-memory bitmaps.
Improve target type compatibility checking in _percent_run().
Add 'target_status_compatible' method to 'struct segtype_handler'.
Fix difference between CTR table built and expected for cluster log.

55
daemons/cmirrord/functions.c
View File

@ -134,11 +134,11 @@ static void log_clear_bit(struct log_c *lc, dm_bitset_t bs, int bit)
static int find_next_zero_bit(dm_bitset_t bs, int start)
{
while (dm_bit(bs, start++))
if (start >= (int)bs[0])
for (; dm_bit(bs, start); start++)
if (start >= *bs)
return -1;
return start - 1;
return start;
}
static uint64_t count_bits32(dm_bitset_t bs)
@ -260,7 +260,9 @@ static int read_log(struct log_c *lc)
/* Read disk bits into sync_bits */
bitset_size = lc->region_count / 8;
bitset_size += (lc->region_count % 8) ? 1 : 0;
memcpy(lc->clean_bits, lc->disk_buffer + 1024, bitset_size);
/* 'lc->clean_bits + 1' becasue dm_bitset_t leads with a uint32_t */
memcpy(lc->clean_bits + 1, lc->disk_buffer + 1024, bitset_size);
return 0;
}
@ -285,7 +287,9 @@ static int write_log(struct log_c *lc)
/* Write disk bits from clean_bits */
bitset_size = lc->region_count / 8;
bitset_size += (lc->region_count % 8) ? 1 : 0;
memcpy(lc->disk_buffer + 1024, lc->clean_bits, bitset_size);
/* 'lc->clean_bits + 1' becasue dm_bitset_t leads with a uint32_t */
memcpy(lc->disk_buffer + 1024, lc->clean_bits + 1, bitset_size);
if (rw_log(lc, 1)) {
lc->log_dev_failed = 1;
@ -477,10 +481,11 @@ static int _clog_ctr(char *uuid, uint64_t luid,
dm_bit_set_all(lc->sync_bits);
lc->sync_count = (sync == NOSYNC) ? region_count : 0;
if (disk_log) {
page_size = sysconf(_SC_PAGESIZE);
pages = ((int)lc->clean_bits[0])/page_size;
pages += ((int)lc->clean_bits[0])%page_size ? 1 : 0;
pages = *(lc->clean_bits) / page_size;
pages += *(lc->clean_bits) % page_size ? 1 : 0;
pages += 1; /* for header */
r = open(disk_path, O_RDWR | O_DIRECT);
@ -1639,10 +1644,14 @@ int do_request(struct clog_request *rq, int server)
return 0;
}
static void print_bits(char *buf, int size, int print)
static void print_bits(dm_bitset_t bs, int print)
{
int i;
int i, size;
char outbuf[128];
unsigned char *buf = bs + 1;
size = (*bs % 8) ? 1 : 0;
size += (*bs / 8);
memset(outbuf, 0, sizeof(outbuf));
@ -1700,7 +1709,7 @@ int push_state(const char *uuid, uint64_t luid,
}
/* Size in 'int's */
bitset_size = ((int)lc->clean_bits[0]/DM_BITS_PER_INT) + 1;
bitset_size = (*(lc->clean_bits) / DM_BITS_PER_INT) + 1;
/* Size in bytes */
bitset_size *= 4;
@ -1714,14 +1723,18 @@ int push_state(const char *uuid, uint64_t luid,
if (!strncmp(which, "sync_bits", 9)) {
memcpy(*buf, lc->sync_bits + 1, bitset_size);
LOG_DBG("[%s] storing sync_bits (sync_count = %llu):",
SHORT_UUID(uuid), (unsigned long long)
count_bits32(lc->sync_bits));
print_bits(*buf, bitset_size, 0);
print_bits(lc->sync_bits, 0);
} else if (!strncmp(which, "clean_bits", 9)) {
memcpy(*buf, lc->clean_bits + 1, bitset_size);
LOG_DBG("[%s] storing clean_bits:", SHORT_UUID(lc->uuid));
print_bits(*buf, bitset_size, 0);
print_bits(lc->clean_bits, 0);
}
return bitset_size;
@ -1754,7 +1767,7 @@ int pull_state(const char *uuid, uint64_t luid,
}
/* Size in 'int's */
bitset_size = ((int)lc->clean_bits[0]/DM_BITS_PER_INT) + 1;
bitset_size = (*(lc->clean_bits) /DM_BITS_PER_INT) + 1;
/* Size in bytes */
bitset_size *= 4;
@ -1768,15 +1781,19 @@ int pull_state(const char *uuid, uint64_t luid,
if (!strncmp(which, "sync_bits", 9)) {
lc->resume_override += 1;
memcpy(lc->sync_bits + 1, buf, bitset_size);
LOG_DBG("[%s] loading sync_bits (sync_count = %llu):",
SHORT_UUID(lc->uuid),(unsigned long long)
count_bits32(lc->sync_bits));
print_bits((char *)lc->sync_bits, bitset_size, 0);
print_bits(lc->sync_bits, 0);
} else if (!strncmp(which, "clean_bits", 9)) {
lc->resume_override += 2;
memcpy(lc->clean_bits + 1, buf, bitset_size);
LOG_DBG("[%s] loading clean_bits:", SHORT_UUID(lc->uuid));
print_bits((char *)lc->clean_bits, bitset_size, 0);
print_bits(lc->sync_bits, 0);
}
return 0;
@ -1819,9 +1836,9 @@ void log_debug(void)
dm_list_iterate_items(lc, &log_pending_list) {
LOG_ERROR("%s", lc->uuid);
LOG_ERROR("sync_bits:");
print_bits((char *)lc->sync_bits, (int)lc->sync_bits[0], 1);
print_bits(lc->sync_bits, 1);
LOG_ERROR("clean_bits:");
print_bits((char *)lc->clean_bits, (int)lc->sync_bits[0], 1);
print_bits(lc->clean_bits, 1);
}
dm_list_iterate_items(lc, &log_list) {
@ -1832,9 +1849,9 @@ void log_debug(void)
LOG_ERROR(" recovery_halted : %s", (lc->recovery_halted) ?
"YES" : "NO");
LOG_ERROR("sync_bits:");
print_bits((char *)lc->sync_bits, (int)lc->sync_bits[0], 1);
print_bits(lc->sync_bits, 1);
LOG_ERROR("clean_bits:");
print_bits((char *)lc->clean_bits, (int)lc->sync_bits[0], 1);
print_bits(lc->clean_bits, 1);
LOG_ERROR("Validating %s::", SHORT_UUID(lc->uuid));
r = find_next_zero_bit(lc->sync_bits, 0);