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Merge dump-journal and dump-meta into the new "vitastor-disk" tool

rm-left-on-dead
Vitaliy Filippov 2022-06-18 01:40:24 +03:00
parent 8800afb649
commit b0e86ca643
7 changed files with 432 additions and 405 deletions
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2
debian/vitastor-osd.install vendored
View File

@ -1,3 +1,3 @@
usr/bin/vitastor-osd
usr/bin/vitastor-disk
usr/bin/vitastor-dump-journal
usr/bin/vitastor-dump-meta

2
rpm/vitastor-el7.spec
View File

@ -112,8 +112,8 @@ cp -r mon %buildroot/usr/lib/vitastor
%files -n vitastor-osd
%_bindir/vitastor-osd
%_bindir/vitastor-disk
%_bindir/vitastor-dump-journal
%_bindir/vitastor-dump-meta
%files -n vitastor-mon

2
rpm/vitastor-el8.spec
View File

@ -109,8 +109,8 @@ cp -r mon %buildroot/usr/lib/vitastor
%files -n vitastor-osd
%_bindir/vitastor-osd
%_bindir/vitastor-disk
%_bindir/vitastor-dump-journal
%_bindir/vitastor-dump-meta
%files -n vitastor-mon

14
src/CMakeLists.txt
View File

@ -193,14 +193,9 @@ target_link_libraries(vitastor-cli
)
configure_file(vitastor.pc.in vitastor.pc @ONLY)
# vitastor-dump-journal
add_executable(vitastor-dump-journal
dump_journal.cpp crc32c.c
)
# vitastor-dump-meta
add_executable(vitastor-dump-meta
dump_meta.cpp rw_blocking.cpp
# vitastor-disk
add_executable(vitastor-disk
disk_tool.cpp crc32c.c rw_blocking.cpp
)
if (${WITH_QEMU})
@ -280,7 +275,8 @@ target_include_directories(test_cluster_client PUBLIC ${CMAKE_SOURCE_DIR}/src/mo
### Install
install(TARGETS vitastor-osd vitastor-dump-journal vitastor-dump-meta vitastor-nbd vitastor-nfs vitastor-cli RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
install(TARGETS vitastor-osd vitastor-disk vitastor-nbd vitastor-nfs vitastor-cli RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
install_symlink(vitastor-disk ${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_BINDIR}/vitastor-dump-journal)
install_symlink(vitastor-cli ${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_BINDIR}/vitastor-rm)
install_symlink(vitastor-cli ${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_BINDIR}/vita)
install(

424
src/disk_tool.cpp Normal file
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@ -0,0 +1,424 @@
// Copyright (c) Vitaliy Filippov, 2019+
// License: VNPL-1.1 (see README.md for details)
#define _LARGEFILE64_SOURCE
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdint.h>
#include <malloc.h>
#include <linux/fs.h>
#include <string.h>
#include <errno.h>
#include <assert.h>
#include <stdio.h>
#include "blockstore_impl.h"
#include "osd_id.h"
#include "crc32c.h"
#include "rw_blocking.h"
struct meta_tool_t
{
std::map<std::string, std::string> options;
char *journal_device;
uint32_t journal_block_size;
uint64_t journal_offset;
uint64_t journal_len;
uint64_t journal_pos;
bool all;
char *meta_device;
uint32_t meta_block_size;
uint64_t meta_offset;
uint64_t meta_len;
uint64_t meta_pos;
char *data_device;
uint64_t data_offset;
uint64_t data_len;
int journal_fd;
int meta_fd;
bool started;
uint32_t crc32_last;
int dump_journal();
int dump_journal_block(void *buf);
int dump_meta();
};
int main(int argc, char *argv[])
{
meta_tool_t self = {};
std::vector<char*> cmd;
char *exe_name = strrchr(argv[0], '/');
exe_name = exe_name ? exe_name+1 : argv[0];
bool aliased = false;
if (!strcmp(exe_name, "vitastor-dump-journal"))
{
cmd.push_back((char*)"dump-journal");
aliased = true;
}
for (int i = 1; i < argc; i++)
{
if (!strcmp(argv[i], "--all"))
{
self.all = true;
}
else if (!strcmp(argv[i], "--help"))
{
cmd.clear();
cmd.push_back((char*)"help");
}
else if (argv[i][0] == '-' && argv[i][1] == '-')
{
char *key = argv[i];
self.options[key] = argv[++i];
}
else
{
cmd.push_back(argv[i]);
}
}
if (cmd.size() && !strcmp(cmd[0], "dump-journal"))
{
if (cmd.size() < 5)
{
printf("USAGE: %s%s [--all] <journal_file> <journal_block_size> <offset> <size>\n", argv[0], aliased ? "" : " dump-journal");
return 1;
}
self.journal_device = cmd[1];
self.journal_block_size = strtoul(cmd[2], NULL, 10);
self.journal_offset = strtoull(cmd[3], NULL, 10);
self.journal_len = strtoull(cmd[4], NULL, 10);
return self.dump_journal();
}
else if (cmd.size() && !strcmp(cmd[0], "dump-meta"))
{
if (cmd.size() < 5)
{
printf("USAGE: %s dump-meta <meta_file> <meta_block_size> <offset> <size>\n", argv[0]);
return 1;
}
self.meta_device = cmd[1];
self.meta_block_size = strtoul(cmd[2], NULL, 10);
self.meta_offset = strtoull(cmd[3], NULL, 10);
self.meta_len = strtoull(cmd[4], NULL, 10);
return self.dump_meta();
}
else
{
printf(
"USAGE:\n"
" %s dump-journal [--all] <journal_file> <journal_block_size> <offset> <size>\n"
" %s dump-meta <meta_file> <meta_block_size> <offset> <size>\n"
,
argv[0], argv[0]
);
}
return 0;
}
int meta_tool_t::dump_journal()
{
auto & self = *this;
if (self.journal_block_size < DIRECT_IO_ALIGNMENT || (self.journal_block_size % DIRECT_IO_ALIGNMENT) ||
self.journal_block_size > 128*1024)
{
printf("Invalid journal block size\n");
return 1;
}
self.journal_fd = open(self.journal_device, O_DIRECT|O_RDONLY);
if (self.journal_fd == -1)
{
printf("Failed to open journal\n");
return 1;
}
void *data = memalign(MEM_ALIGNMENT, self.journal_block_size);
self.journal_pos = 0;
if (self.all)
{
while (self.journal_pos < self.journal_len)
{
int r = pread(self.journal_fd, data, self.journal_block_size, self.journal_offset+self.journal_pos);
assert(r == self.journal_block_size);
uint64_t s;
for (s = 0; s < self.journal_block_size; s += 8)
{
if (*((uint64_t*)((uint8_t*)data+s)) != 0)
break;
}
if (s == self.journal_block_size)
{
printf("offset %08lx: zeroes\n", self.journal_pos);
self.journal_pos += self.journal_block_size;
}
else if (((journal_entry*)data)->magic == JOURNAL_MAGIC)
{
printf("offset %08lx:\n", self.journal_pos);
self.dump_journal_block(data);
}
else
{
printf("offset %08lx: no magic in the beginning, looks like random data (pattern=%lx)\n", self.journal_pos, *((uint64_t*)data));
self.journal_pos += self.journal_block_size;
}
}
}
else
{
int r = pread(self.journal_fd, data, self.journal_block_size, self.journal_offset+self.journal_pos);
assert(r == self.journal_block_size);
journal_entry *je = (journal_entry*)(data);
if (je->magic != JOURNAL_MAGIC || je->type != JE_START || je_crc32(je) != je->crc32)
{
printf("offset %08lx: journal superblock is invalid\n", self.journal_pos);
}
else
{
printf("offset %08lx:\n", self.journal_pos);
self.dump_journal_block(data);
self.started = false;
self.journal_pos = je->start.journal_start;
while (1)
{
if (self.journal_pos >= self.journal_len)
self.journal_pos = self.journal_block_size;
r = pread(self.journal_fd, data, self.journal_block_size, self.journal_offset+self.journal_pos);
assert(r == self.journal_block_size);
printf("offset %08lx:\n", self.journal_pos);
r = self.dump_journal_block(data);
if (r <= 0)
{
printf("end of the journal\n");
break;
}
}
}
}
free(data);
close(self.journal_fd);
return 0;
}
int meta_tool_t::dump_journal_block(void *buf)
{
uint32_t pos = 0;
journal_pos += journal_block_size;
int entry = 0;
bool wrapped = false;
while (pos < journal_block_size)
{
journal_entry *je = (journal_entry*)((uint8_t*)buf + pos);
if (je->magic != JOURNAL_MAGIC || je->type < JE_MIN || je->type > JE_MAX ||
!all && started && je->crc32_prev != crc32_last)
{
break;
}
bool crc32_valid = je_crc32(je) == je->crc32;
if (!all && !crc32_valid)
{
break;
}
started = true;
crc32_last = je->crc32;
printf("entry % 3d: crc32=%08x %s prev=%08x ", entry, je->crc32, (crc32_valid ? "(valid)" : "(invalid)"), je->crc32_prev);
if (je->type == JE_START)
{
printf("je_start start=%08lx\n", je->start.journal_start);
}
else if (je->type == JE_SMALL_WRITE || je->type == JE_SMALL_WRITE_INSTANT)
{
printf(
"je_small_write%s oid=%lx:%lx ver=%lu offset=%u len=%u loc=%08lx",
je->type == JE_SMALL_WRITE_INSTANT ? "_instant" : "",
je->small_write.oid.inode, je->small_write.oid.stripe,
je->small_write.version, je->small_write.offset, je->small_write.len,
je->small_write.data_offset
);
if (journal_pos + je->small_write.len > journal_len)
{
// data continues from the beginning of the journal
journal_pos = journal_block_size;
wrapped = true;
}
if (journal_pos != je->small_write.data_offset)
{
printf(" (mismatched, calculated = %lu)", journal_pos);
}
journal_pos += je->small_write.len;
if (journal_pos >= journal_len)
{
journal_pos = journal_block_size;
wrapped = true;
}
uint32_t data_crc32 = 0;
void *data = memalign(MEM_ALIGNMENT, je->small_write.len);
assert(pread(this->journal_fd, data, je->small_write.len, journal_offset+je->small_write.data_offset) == je->small_write.len);
data_crc32 = crc32c(0, data, je->small_write.len);
free(data);
printf(
" data_crc32=%08x%s", je->small_write.crc32_data,
(data_crc32 != je->small_write.crc32_data) ? " (invalid)" : " (valid)"
);
printf("\n");
}
else if (je->type == JE_BIG_WRITE || je->type == JE_BIG_WRITE_INSTANT)
{
printf(
"je_big_write%s oid=%lx:%lx ver=%lu loc=%08lx\n",
je->type == JE_BIG_WRITE_INSTANT ? "_instant" : "",
je->big_write.oid.inode, je->big_write.oid.stripe, je->big_write.version, je->big_write.location
);
}
else if (je->type == JE_STABLE)
{
printf("je_stable oid=%lx:%lx ver=%lu\n", je->stable.oid.inode, je->stable.oid.stripe, je->stable.version);
}
else if (je->type == JE_ROLLBACK)
{
printf("je_rollback oid=%lx:%lx ver=%lu\n", je->rollback.oid.inode, je->rollback.oid.stripe, je->rollback.version);
}
else if (je->type == JE_DELETE)
{
printf("je_delete oid=%lx:%lx ver=%lu\n", je->del.oid.inode, je->del.oid.stripe, je->del.version);
}
pos += je->size;
entry++;
}
if (wrapped)
{
journal_pos = journal_len;
}
return entry;
}
int meta_tool_t::dump_meta()
{
if (this->meta_block_size % DIRECT_IO_ALIGNMENT)
{
printf("Invalid metadata block size\n");
return 1;
}
this->meta_fd = open(this->meta_device, O_DIRECT|O_RDONLY);
if (this->meta_fd == -1)
{
printf("Failed to open metadata device\n");
return 1;
}
int buf_size = 1024*1024;
if (buf_size % this->meta_block_size)
buf_size = 8*this->meta_block_size;
if (buf_size > this->meta_len)
buf_size = this->meta_len;
void *data = memalign_or_die(MEM_ALIGNMENT, buf_size);
lseek64(this->meta_fd, this->meta_offset, 0);
read_blocking(this->meta_fd, data, buf_size);
// Check superblock
blockstore_meta_header_v1_t *hdr = (blockstore_meta_header_v1_t *)data;
if (hdr->zero == 0 &&
hdr->magic == BLOCKSTORE_META_MAGIC_V1 &&
hdr->version == BLOCKSTORE_META_VERSION_V1)
{
// Vitastor 0.6-0.7 - static array of clean_disk_entry with bitmaps
if (hdr->meta_block_size != this->meta_block_size)
{
printf("Using block size of %u bytes based on information from the superblock\n", hdr->meta_block_size);
this->meta_block_size = hdr->meta_block_size;
if (buf_size % this->meta_block_size)
{
buf_size = 8*this->meta_block_size;
free(data);
data = memalign_or_die(MEM_ALIGNMENT, buf_size);
}
}
this->meta_offset += this->meta_block_size;
this->meta_len -= this->meta_block_size;
uint64_t clean_entry_bitmap_size = hdr->data_block_size / hdr->bitmap_granularity / 8;
uint64_t clean_entry_size = sizeof(clean_disk_entry) + 2*clean_entry_bitmap_size;
uint64_t block_num = 0;
printf(
"{\"version\":\"0.6\",\"meta_block_size\":%u,\"data_block_size\":%u,\"bitmap_granularity\":%u,\"entries\":[\n",
hdr->meta_block_size, hdr->data_block_size, hdr->bitmap_granularity
);
bool first = true;
lseek64(this->meta_fd, this->meta_offset, 0);
while (this->meta_pos < this->meta_len)
{
uint64_t read_len = buf_size < this->meta_len-this->meta_pos ? buf_size : this->meta_len-this->meta_pos;
read_blocking(this->meta_fd, data, read_len);
this->meta_pos += read_len;
for (uint64_t blk = 0; blk < read_len; blk += this->meta_block_size)
{
for (uint64_t ioff = 0; ioff < this->meta_block_size-clean_entry_size; ioff += clean_entry_size, block_num++)
{
clean_disk_entry *entry = (clean_disk_entry*)(data + blk + ioff);
if (entry->oid.inode)
{
printf(
#define ENTRY_FMT "{\"block\":%lu,\"pool\":%u,\"inode\":%lu,\"stripe\":%lu,\"version\":%lu,\"bitmap\":\""
(first ? ENTRY_FMT : (",\n" ENTRY_FMT)),
#undef ENTRY_FMT
block_num, INODE_POOL(entry->oid.inode), INODE_NO_POOL(entry->oid.inode),
entry->oid.stripe, entry->version
);
first = false;
for (uint64_t i = 0; i < clean_entry_bitmap_size; i++)
{
printf("%02x", entry->bitmap[i]);
}
printf("\",\"ext_bitmap\":\"");
for (uint64_t i = 0; i < clean_entry_bitmap_size; i++)
{
printf("%02x", entry->bitmap[clean_entry_bitmap_size + i]);
}
printf("\"}");
}
}
}
}
printf("\n]}\n");
}
else
{
// Vitastor 0.4-0.5 - static array of clean_disk_entry
uint64_t clean_entry_size = sizeof(clean_disk_entry);
uint64_t block_num = 0;
printf("{\"version\":\"0.5\",\"meta_block_size\":%u,\"entries\":[\n", this->meta_block_size);
bool first = true;
while (this->meta_pos < this->meta_len)
{
uint64_t read_len = buf_size < this->meta_len-this->meta_pos ? buf_size : this->meta_len-this->meta_pos;
read_blocking(this->meta_fd, data, read_len);
this->meta_pos += read_len;
for (uint64_t blk = 0; blk < read_len; blk += this->meta_block_size)
{
for (uint64_t ioff = 0; ioff < this->meta_block_size-clean_entry_size; ioff += clean_entry_size, block_num++)
{
clean_disk_entry *entry = (clean_disk_entry*)(data + blk + ioff);
if (entry->oid.inode)
{
printf(
#define ENTRY_FMT "{\"block\":%lu,\"pool\":%u,\"inode\":%lu,\"stripe\":%lu,\"version\":%lu}"
(first ? ENTRY_FMT : (",\n" ENTRY_FMT)),
#undef ENTRY_FMT
block_num, INODE_POOL(entry->oid.inode), INODE_NO_POOL(entry->oid.inode),
entry->oid.stripe, entry->version
);
first = false;
}
}
}
}
printf("\n]}\n");
}
free(data);
close(this->meta_fd);
return 0;
}

224
src/dump_journal.cpp
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@ -1,224 +0,0 @@
// Copyright (c) Vitaliy Filippov, 2019+
// License: VNPL-1.1 (see README.md for details)
#define _LARGEFILE64_SOURCE
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdint.h>
#include <malloc.h>
#include <linux/fs.h>
#include <string.h>
#include <errno.h>
#include <assert.h>
#include <stdio.h>
#include "blockstore_impl.h"
#include "crc32c.h"
struct journal_dump_t
{
char *journal_device;
uint32_t journal_block;
uint64_t journal_offset;
uint64_t journal_len;
uint64_t journal_pos;
bool all;
bool started;
int fd;
uint32_t crc32_last;
int dump_block(void *buf);
};
int main(int argc, char *argv[])
{
journal_dump_t self = { 0 };
int b = 1;
if (argc >= 2 && !strcmp(argv[1], "--all"))
{
self.all = true;
b = 2;
}
if (argc < b+4)
{
printf("USAGE: %s [--all] <journal_file> <journal_block_size> <offset> <size>\n", argv[0]);
return 1;
}
self.journal_device = argv[b];
self.journal_block = strtoul(argv[b+1], NULL, 10);
self.journal_offset = strtoull(argv[b+2], NULL, 10);
self.journal_len = strtoull(argv[b+3], NULL, 10);
if (self.journal_block < DIRECT_IO_ALIGNMENT || (self.journal_block % DIRECT_IO_ALIGNMENT) ||
self.journal_block > 128*1024)
{
printf("Invalid journal block size\n");
return 1;
}
self.fd = open(self.journal_device, O_DIRECT|O_RDONLY);
if (self.fd == -1)
{
printf("Failed to open journal\n");
return 1;
}
void *data = memalign(MEM_ALIGNMENT, self.journal_block);
self.journal_pos = 0;
if (self.all)
{
while (self.journal_pos < self.journal_len)
{
int r = pread(self.fd, data, self.journal_block, self.journal_offset+self.journal_pos);
assert(r == self.journal_block);
uint64_t s;
for (s = 0; s < self.journal_block; s += 8)
{
if (*((uint64_t*)((uint8_t*)data+s)) != 0)
break;
}
if (s == self.journal_block)
{
printf("offset %08lx: zeroes\n", self.journal_pos);
self.journal_pos += self.journal_block;
}
else if (((journal_entry*)data)->magic == JOURNAL_MAGIC)
{
printf("offset %08lx:\n", self.journal_pos);
self.dump_block(data);
}
else
{
printf("offset %08lx: no magic in the beginning, looks like random data (pattern=%lx)\n", self.journal_pos, *((uint64_t*)data));
self.journal_pos += self.journal_block;
}
}
}
else
{
int r = pread(self.fd, data, self.journal_block, self.journal_offset+self.journal_pos);
assert(r == self.journal_block);
journal_entry *je = (journal_entry*)(data);
if (je->magic != JOURNAL_MAGIC || je->type != JE_START || je_crc32(je) != je->crc32)
{
printf("offset %08lx: journal superblock is invalid\n", self.journal_pos);
}
else
{
printf("offset %08lx:\n", self.journal_pos);
self.dump_block(data);
self.started = false;
self.journal_pos = je->start.journal_start;
while (1)
{
if (self.journal_pos >= self.journal_len)
self.journal_pos = self.journal_block;
r = pread(self.fd, data, self.journal_block, self.journal_offset+self.journal_pos);
assert(r == self.journal_block);
printf("offset %08lx:\n", self.journal_pos);
r = self.dump_block(data);
if (r <= 0)
{
printf("end of the journal\n");
break;
}
}
}
}
free(data);
close(self.fd);
return 0;
}
int journal_dump_t::dump_block(void *buf)
{
uint32_t pos = 0;
journal_pos += journal_block;
int entry = 0;
bool wrapped = false;
while (pos < journal_block)
{
journal_entry *je = (journal_entry*)((uint8_t*)buf + pos);
if (je->magic != JOURNAL_MAGIC || je->type < JE_MIN || je->type > JE_MAX ||
!all && started && je->crc32_prev != crc32_last)
{
break;
}
bool crc32_valid = je_crc32(je) == je->crc32;
if (!all && !crc32_valid)
{
break;
}
started = true;
crc32_last = je->crc32;
printf("entry % 3d: crc32=%08x %s prev=%08x ", entry, je->crc32, (crc32_valid ? "(valid)" : "(invalid)"), je->crc32_prev);
if (je->type == JE_START)
{
printf("je_start start=%08lx\n", je->start.journal_start);
}
else if (je->type == JE_SMALL_WRITE || je->type == JE_SMALL_WRITE_INSTANT)
{
printf(
"je_small_write%s oid=%lx:%lx ver=%lu offset=%u len=%u loc=%08lx",
je->type == JE_SMALL_WRITE_INSTANT ? "_instant" : "",
je->small_write.oid.inode, je->small_write.oid.stripe,
je->small_write.version, je->small_write.offset, je->small_write.len,
je->small_write.data_offset
);
if (journal_pos + je->small_write.len > journal_len)
{
// data continues from the beginning of the journal
journal_pos = journal_block;
wrapped = true;
}
if (journal_pos != je->small_write.data_offset)
{
printf(" (mismatched, calculated = %lu)", journal_pos);
}
journal_pos += je->small_write.len;
if (journal_pos >= journal_len)
{
journal_pos = journal_block;
wrapped = true;
}
uint32_t data_crc32 = 0;
void *data = memalign(MEM_ALIGNMENT, je->small_write.len);
assert(pread(fd, data, je->small_write.len, journal_offset+je->small_write.data_offset) == je->small_write.len);
data_crc32 = crc32c(0, data, je->small_write.len);
free(data);
printf(
" data_crc32=%08x%s", je->small_write.crc32_data,
(data_crc32 != je->small_write.crc32_data) ? " (invalid)" : " (valid)"
);
printf("\n");
}
else if (je->type == JE_BIG_WRITE || je->type == JE_BIG_WRITE_INSTANT)
{
printf(
"je_big_write%s oid=%lx:%lx ver=%lu loc=%08lx\n",
je->type == JE_BIG_WRITE_INSTANT ? "_instant" : "",
je->big_write.oid.inode, je->big_write.oid.stripe, je->big_write.version, je->big_write.location
);
}
else if (je->type == JE_STABLE)
{
printf("je_stable oid=%lx:%lx ver=%lu\n", je->stable.oid.inode, je->stable.oid.stripe, je->stable.version);
}
else if (je->type == JE_ROLLBACK)
{
printf("je_rollback oid=%lx:%lx ver=%lu\n", je->rollback.oid.inode, je->rollback.oid.stripe, je->rollback.version);
}
else if (je->type == JE_DELETE)
{
printf("je_delete oid=%lx:%lx ver=%lu\n", je->del.oid.inode, je->del.oid.stripe, je->del.version);
}
pos += je->size;
entry++;
}
if (wrapped)
{
journal_pos = journal_len;
}
return entry;
}

169
src/dump_meta.cpp
View File

@ -1,169 +0,0 @@
// Copyright (c) Vitaliy Filippov, 2019+
// License: VNPL-1.1 (see README.md for details)
#define _LARGEFILE64_SOURCE
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdint.h>
#include <stdlib.h>
#include <malloc.h>
#include <errno.h>
#include <assert.h>
#include <stdio.h>
#include "blockstore_impl.h"
#include "osd_id.h"
#include "rw_blocking.h"
struct meta_dumper_t
{
char *meta_device;
uint32_t meta_block_size;
uint64_t meta_offset;
uint64_t meta_len;
uint64_t meta_pos;
int fd;
int dump();
};
int main(int argc, char *argv[])
{
meta_dumper_t self = { 0 };
int b = 1;
if (argc < b+4)
{
printf("USAGE: %s <meta_file> <meta_block_size> <offset> <size>\n", argv[0]);
return 1;
}
self.meta_device = argv[b];
self.meta_block_size = strtoul(argv[b+1], NULL, 10);
self.meta_offset = strtoull(argv[b+2], NULL, 10);
self.meta_len = strtoull(argv[b+3], NULL, 10);
return self.dump();
}
int meta_dumper_t::dump()
{
if (this->meta_block_size % DIRECT_IO_ALIGNMENT)
{
printf("Invalid metadata block size\n");
return 1;
}
this->fd = open(this->meta_device, O_DIRECT|O_RDONLY);
if (this->fd == -1)
{
printf("Failed to open metadata device\n");
return 1;
}
int buf_size = 1024*1024;
if (buf_size % this->meta_block_size)
buf_size = 8*this->meta_block_size;
if (buf_size > this->meta_len)
buf_size = this->meta_len;
void *data = memalign_or_die(MEM_ALIGNMENT, buf_size);
lseek64(this->fd, this->meta_offset, 0);
read_blocking(this->fd, data, buf_size);
// Check superblock
blockstore_meta_header_v1_t *hdr = (blockstore_meta_header_v1_t *)data;
if (hdr->zero == 0 &&
hdr->magic == BLOCKSTORE_META_MAGIC_V1 &&
hdr->version == BLOCKSTORE_META_VERSION_V1)
{
// Vitastor 0.6-0.7 - static array of clean_disk_entry with bitmaps
if (hdr->meta_block_size != this->meta_block_size)
{
printf("Using block size of %u bytes based on information from the superblock\n", hdr->meta_block_size);
this->meta_block_size = hdr->meta_block_size;
if (buf_size % this->meta_block_size)
{
buf_size = 8*this->meta_block_size;
free(data);
data = memalign_or_die(MEM_ALIGNMENT, buf_size);
}
}
this->meta_offset += this->meta_block_size;
this->meta_len -= this->meta_block_size;
uint64_t clean_entry_bitmap_size = hdr->data_block_size / hdr->bitmap_granularity / 8;
uint64_t clean_entry_size = sizeof(clean_disk_entry) + 2*clean_entry_bitmap_size;
uint64_t block_num = 0;
printf(
"{\"version\":\"0.6\",\"meta_block_size\":%u,\"data_block_size\":%u,\"bitmap_granularity\":%u,\"entries\":[\n",
hdr->meta_block_size, hdr->data_block_size, hdr->bitmap_granularity
);
bool first = true;
lseek64(this->fd, this->meta_offset, 0);
while (this->meta_pos < this->meta_len)
{
uint64_t read_len = buf_size < this->meta_len-this->meta_pos ? buf_size : this->meta_len-this->meta_pos;
read_blocking(this->fd, data, read_len);
this->meta_pos += read_len;
for (uint64_t blk = 0; blk < read_len; blk += this->meta_block_size)
{
for (uint64_t ioff = 0; ioff < this->meta_block_size-clean_entry_size; ioff += clean_entry_size, block_num++)
{
clean_disk_entry *entry = (clean_disk_entry*)(data + blk + ioff);
if (entry->oid.inode)
{
printf(
#define ENTRY_FMT "{\"block\":%lu,\"pool\":%u,\"inode\":%lu,\"stripe\":%lu,\"version\":%lu,\"bitmap\":\""
(first ? ENTRY_FMT : (",\n" ENTRY_FMT)),
#undef ENTRY_FMT
block_num, INODE_POOL(entry->oid.inode), INODE_NO_POOL(entry->oid.inode),
entry->oid.stripe, entry->version
);
first = false;
for (uint64_t i = 0; i < clean_entry_bitmap_size; i++)
{
printf("%02x", entry->bitmap[i]);
}
printf("\",\"ext_bitmap\":\"");
for (uint64_t i = 0; i < clean_entry_bitmap_size; i++)
{
printf("%02x", entry->bitmap[clean_entry_bitmap_size + i]);
}
printf("\"}");
}
}
}
}
printf("\n]}\n");
}
else
{
// Vitastor 0.4-0.5 - static array of clean_disk_entry
uint64_t clean_entry_size = sizeof(clean_disk_entry);
uint64_t block_num = 0;
printf("{\"version\":\"0.5\",\"meta_block_size\":%u,\"entries\":[\n", this->meta_block_size);
bool first = true;
while (this->meta_pos < this->meta_len)
{
uint64_t read_len = buf_size < this->meta_len-this->meta_pos ? buf_size : this->meta_len-this->meta_pos;
read_blocking(this->fd, data, read_len);
this->meta_pos += read_len;
for (uint64_t blk = 0; blk < read_len; blk += this->meta_block_size)
{
for (uint64_t ioff = 0; ioff < this->meta_block_size-clean_entry_size; ioff += clean_entry_size, block_num++)
{
clean_disk_entry *entry = (clean_disk_entry*)(data + blk + ioff);
if (entry->oid.inode)
{
printf(
#define ENTRY_FMT "{\"block\":%lu,\"pool\":%u,\"inode\":%lu,\"stripe\":%lu,\"version\":%lu}"
(first ? ENTRY_FMT : (",\n" ENTRY_FMT)),
#undef ENTRY_FMT
block_num, INODE_POOL(entry->oid.inode), INODE_NO_POOL(entry->oid.inode),
entry->oid.stripe, entry->version
);
first = false;
}
}
}
}
printf("\n]}\n");
}
free(data);
close(this->fd);
return 0;
}