[thin_repair] work in progress
This commit is contained in:
parent
8abac422b2
commit
aace49cdd6
@ -18,19 +18,22 @@
|
||||
;;; node though, can't be used to differentiate).
|
||||
(define (thin-check metadata root)
|
||||
(let ((exit-code (system
|
||||
(fmt #f "../bin/thin_check --skip-mappings --override-mapping-root "
|
||||
(fmt #f "../bin/thin_check --override-mapping-root "
|
||||
root " " metadata " > /dev/null 2>&1"))))
|
||||
(fmt #t "exit-code: " (wrt exit-code) ", ")
|
||||
(zero? exit-code)))
|
||||
|
||||
(define metadata "../customer-metadata-full.bin")
|
||||
;(define metadata "../metadataoriginal")
|
||||
;(define nr-metadata-blocks 262144)
|
||||
|
||||
(define metadata "/home/ejt/work/RedHat/rhel7-vm/dmtest/metadata.bin")
|
||||
(define nr-metadata-blocks 32768)
|
||||
|
||||
;; FIXME: aren't we returning a reference to a cache page and then dropping the lock?
|
||||
(define (read-superblock cache)
|
||||
(with-block (b cache 0 (get-flags))
|
||||
(block->superblock b)))
|
||||
|
||||
(define nr-metadata-blocks 8192)
|
||||
|
||||
(define (in-metadata-bounds? i)
|
||||
(< i nr-metadata-blocks))
|
||||
@ -87,6 +90,11 @@
|
||||
(< (ftype-ref BTreeNodeHeader (nr-entries) hdr)
|
||||
(/ (ftype-ref BTreeNodeHeader (max-entries) hdr) 3))))
|
||||
|
||||
(define (details-leaf? b hdr)
|
||||
(and (leaf-node? hdr)
|
||||
(= (ftype-sizeof ThinDeviceDetails)
|
||||
(ftype-ref BTreeNodeHeader (value-size) hdr))))
|
||||
|
||||
(define (classify-node b hdr)
|
||||
(fold-left append '()
|
||||
(map (lambda (pair)
|
||||
@ -95,7 +103,8 @@
|
||||
'()))
|
||||
`((,internal? internal)
|
||||
(,bottom-level-leaf? bottom-level-leaf)
|
||||
(,top-level-leaf? top-level-leaf)))))
|
||||
(,top-level-leaf? top-level-leaf)
|
||||
(,details-leaf? details-leaf)))))
|
||||
|
||||
(define (checksum-btree-node b)
|
||||
(checksum-block b (ftype-sizeof unsigned-32) btree-node-salt))
|
||||
@ -120,6 +129,7 @@
|
||||
|
||||
(define (dump-device-details cache)
|
||||
(let ((sb (read-superblock cache)))
|
||||
(fmt #t sb)
|
||||
(device-tree-each cache (ftype-ref ThinSuperblock (device-details-root) sb)
|
||||
(lambda (dev-id dd)
|
||||
(fmt #t "dev-id: " dev-id "\n"
|
||||
@ -139,14 +149,16 @@
|
||||
;; An interesting node has more than one class.
|
||||
(define (filter-interesting-blocks classes)
|
||||
(filter (lambda (xs)
|
||||
(> (length xs) 1))
|
||||
(>= (length xs) 1))
|
||||
classes))
|
||||
|
||||
(define (fmt-list xs)
|
||||
(for-each (lambda (x) (fmt #t x nl)) xs))
|
||||
|
||||
(with-bcache (cache metadata (* 16 1024))
|
||||
(dump-device-details cache)
|
||||
(let ((classes (classify-nodes cache))
|
||||
(rmap (make-eq-hashtable)))
|
||||
(fmt #t (filter-interesting-blocks classes))))
|
||||
(fmt-list (filter-interesting-blocks classes))))
|
||||
|
||||
#|
|
||||
(with-bcache (cache metadata (* 16 1024))
|
||||
@ -159,7 +171,7 @@
|
||||
#|
|
||||
(let loop ((i 0)
|
||||
(successes '()))
|
||||
(if (> i 8192)
|
||||
(if (> i nr-metadata-blocks)
|
||||
(fmt #t "successes: " (wrt successes) "\n")
|
||||
;; add --ignore-non-fatal-errors flag
|
||||
(if (thin-check "../customer-metadata-full.bin" i)
|
||||
|
@ -1,6 +1,9 @@
|
||||
#ifndef PERSISTENT_DATA_DATA_STRUCTURES_SIMPLE_TRAITS_H
|
||||
#define PERSISTENT_DATA_DATA_STRUCTURES_SIMPLE_TRAITS_H
|
||||
|
||||
#include "base/endian_utils.h"
|
||||
#include "persistent-data/data-structures/btree.h"
|
||||
|
||||
//----------------------------------------------------------------
|
||||
|
||||
namespace persistent_data {
|
||||
|
@ -20,11 +20,358 @@
|
||||
#include "thin-provisioning/metadata_dumper.h"
|
||||
#include "thin-provisioning/mapping_tree.h"
|
||||
|
||||
#include <map>
|
||||
#include <vector>
|
||||
|
||||
using namespace persistent_data;
|
||||
using namespace thin_provisioning;
|
||||
|
||||
//----------------------------------------------------------------
|
||||
|
||||
// We only need to examine the mapping tree, and device details tree.
|
||||
// The space maps can be inferred.
|
||||
|
||||
// Repair process:
|
||||
// - We only trigger the repair process if there's damage when walking from
|
||||
// the roots given in the superblock.
|
||||
// - If there is damage, then we try and find the most recent roots with the
|
||||
// least corruption. We're seeing cases where just the superblock has been
|
||||
// trashed so finding the best roots is essential, and sadly non trivial.
|
||||
|
||||
// Finding roots:
|
||||
// This is about classifying and summarising btree nodes. The use of a btree
|
||||
// node may not be obvious when inspecting it in isolation. But more information
|
||||
// may be gleaned by examining child and sibling nodes.
|
||||
//
|
||||
// So the process is:
|
||||
// - scan every metadata block, summarising it's potential uses.
|
||||
// - repeatedly iterate those summaries until we can glean no more useful information.
|
||||
// - sort candidate roots, choose best
|
||||
|
||||
// Summary information:
|
||||
// - btree; mapping top level, mapping bottom level, device tree (more than one possible)
|
||||
// - node type; internal or leaf
|
||||
// - age; for mapping trees we can infer a minimum age from the block/time
|
||||
// values. In addition two similar leaf nodes can be compared by looking
|
||||
// at the block/time for _specific_ blocks. This means we can define an ordering
|
||||
// on the ages, but not equality.
|
||||
// - Device details can be aged based on the last_snapshot_time field.
|
||||
|
||||
// Iteration of summary info:
|
||||
// - constraints propagate both up and down the trees. eg, node 'a' may
|
||||
// be ambiguous (all internal nodes are ambigous). If we find that all it's
|
||||
// children are device details trees, then we infer that this is too and lose
|
||||
// the ambiguity. Now if it has a sibling we can infer on this too.
|
||||
// - Some characteristics only propagate upwards. eg, age. So we need two monoids
|
||||
// for summary info (up and down).
|
||||
|
||||
namespace {
|
||||
using namespace std;
|
||||
using namespace boost;
|
||||
using namespace persistent_data::btree_detail;
|
||||
using namespace thin_provisioning::device_tree_detail;
|
||||
|
||||
enum btree_type_bit {
|
||||
TOP_LEVEL,
|
||||
BOTTOM_LEVEL,
|
||||
DEVICE_DETAILS
|
||||
};
|
||||
|
||||
struct node_info {
|
||||
node_info()
|
||||
: types(0),
|
||||
b(0),
|
||||
values(0),
|
||||
orphan(true),
|
||||
is_leaf(true),
|
||||
key_low(0),
|
||||
key_high(0),
|
||||
age(0) {
|
||||
}
|
||||
|
||||
void add_type(btree_type_bit b) {
|
||||
types = types | (1 << b);
|
||||
}
|
||||
|
||||
void clear_type(btree_type_bit b) {
|
||||
types = types & ~(1 << b);
|
||||
}
|
||||
|
||||
bool has_type(btree_type_bit b) const {
|
||||
return types & (1 << b);
|
||||
}
|
||||
|
||||
// Indicate corruption by having no fields set
|
||||
unsigned types;
|
||||
|
||||
// common
|
||||
block_address b;
|
||||
unsigned values;
|
||||
bool orphan;
|
||||
bool is_leaf;
|
||||
uint64_t key_low;
|
||||
uint64_t key_high;
|
||||
set<uint32_t> devices;
|
||||
uint32_t age;
|
||||
};
|
||||
|
||||
using info_map = map<block_address, node_info>;
|
||||
|
||||
bool is_btree_node(block_manager<> &bm, block_address b) {
|
||||
auto v = create_btree_node_validator();
|
||||
auto rr = bm.read_lock(b);
|
||||
|
||||
return v->check_raw(rr.data());
|
||||
}
|
||||
|
||||
uint32_t get_dd_age(device_details const &dd) {
|
||||
return max(dd.creation_time_, dd.snapshotted_time_);
|
||||
}
|
||||
|
||||
void scan_initial_infos(block_manager<> &bm, info_map &result) {
|
||||
for (block_address b = 0; b < bm.get_nr_blocks(); b++) {
|
||||
if (!is_btree_node(bm, b))
|
||||
continue;
|
||||
|
||||
node_info info;
|
||||
info.b = b;
|
||||
|
||||
auto rr = bm.read_lock(b);
|
||||
auto hdr = reinterpret_cast<node_header const *>(rr.data());
|
||||
|
||||
auto flags = to_cpu<uint32_t>(hdr->flags);
|
||||
if (flags & INTERNAL_NODE) {
|
||||
info.is_leaf = false;
|
||||
info.add_type(TOP_LEVEL);
|
||||
info.add_type(BOTTOM_LEVEL);
|
||||
info.add_type(DEVICE_DETAILS);
|
||||
} else {
|
||||
info.is_leaf = true;
|
||||
auto vsize = to_cpu<uint32_t>(hdr->value_size);
|
||||
info.values = to_cpu<uint32_t>(hdr->nr_entries);
|
||||
|
||||
if (vsize == sizeof(device_details_traits::disk_type)) {
|
||||
info.add_type(DEVICE_DETAILS);
|
||||
|
||||
auto n = to_node<device_details_traits>(rr);
|
||||
if (n.get_nr_entries()) {
|
||||
info.key_low = n.key_at(0);
|
||||
info.key_high = n.key_at(n.get_nr_entries() - 1);
|
||||
}
|
||||
|
||||
for (unsigned i = 0; i < n.get_nr_entries(); i++)
|
||||
info.age = max(info.age, get_dd_age(n.value_at(i)));
|
||||
|
||||
} else if (vsize == sizeof(uint64_t)) {
|
||||
info.add_type(BOTTOM_LEVEL);
|
||||
|
||||
// This can only be a top level leaf if all the values are
|
||||
// blocks on the metadata device.
|
||||
auto is_top_level = true;
|
||||
auto n = to_node<block_traits>(rr);
|
||||
|
||||
if (n.get_nr_entries()) {
|
||||
info.key_low = n.key_at(0);
|
||||
info.key_high = n.key_at(n.get_nr_entries() - 1);
|
||||
}
|
||||
|
||||
for (unsigned i = 0; i < n.get_nr_entries(); i++) {
|
||||
if (n.value_at(i) >= bm.get_nr_blocks()) {
|
||||
is_top_level = false;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (is_top_level)
|
||||
info.add_type(TOP_LEVEL);
|
||||
} else
|
||||
continue;
|
||||
}
|
||||
|
||||
result.insert(make_pair(b, info));
|
||||
}
|
||||
}
|
||||
|
||||
bool merge_types(node_info &parent, node_info const &child, btree_type_bit b) {
|
||||
if (parent.has_type(b) && !child.has_type(b)) {
|
||||
parent.clear_type(b);
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
// return true if something changed
|
||||
bool merge_from_below(node_info &parent, node_info const &child) {
|
||||
bool changed = false;
|
||||
|
||||
changed = merge_types(parent, child, TOP_LEVEL) ||
|
||||
merge_types(parent, child, BOTTOM_LEVEL) ||
|
||||
merge_types(parent, child, DEVICE_DETAILS);
|
||||
|
||||
return changed;
|
||||
}
|
||||
|
||||
void fail(node_info &n) {
|
||||
n.types = 0;
|
||||
}
|
||||
|
||||
bool failed(node_info const &n) {
|
||||
return n.types == 0;
|
||||
}
|
||||
|
||||
bool iterate_infos_(block_manager<> &bm, info_map &infos) {
|
||||
bool changed = false;
|
||||
|
||||
for (auto &p : infos) {
|
||||
auto &parent = p.second;
|
||||
|
||||
if (parent.is_leaf)
|
||||
continue;
|
||||
|
||||
// values refer to blocks, so we should have infos for them.
|
||||
auto rr = bm.read_lock(p.first);
|
||||
auto n = to_node<block_traits>(rr);
|
||||
uint64_t key_low = 0;
|
||||
unsigned values = 0;
|
||||
|
||||
for (unsigned i = 0; i < n.get_nr_entries(); i++) {
|
||||
auto it = infos.find(n.value_at(i));
|
||||
|
||||
if (it == infos.end()) {
|
||||
fail(parent);
|
||||
break;
|
||||
}
|
||||
|
||||
auto &child = it->second;
|
||||
|
||||
// we use the keys to help decide if this is a valid child
|
||||
if (child.key_low <= key_low) {
|
||||
fail(parent);
|
||||
break;
|
||||
|
||||
} else
|
||||
key_low = child.key_high;
|
||||
|
||||
|
||||
changed = merge_from_below(parent, child) || changed;
|
||||
|
||||
if (parent.has_type(DEVICE_DETAILS) && child.age > parent.age) {
|
||||
changed = true;
|
||||
parent.age = child.age;
|
||||
}
|
||||
|
||||
values += child.values;
|
||||
}
|
||||
|
||||
// We don't clear the orphan flags until we know the parent is good
|
||||
if (!failed(parent)) {
|
||||
parent.values = values;
|
||||
|
||||
for (unsigned i = 0; i < n.get_nr_entries(); i++) {
|
||||
auto it = infos.find(n.value_at(i));
|
||||
|
||||
if (it == infos.end())
|
||||
throw runtime_error("no child info, but it was there a moment ago");
|
||||
|
||||
auto &child = it->second;
|
||||
child.orphan = false;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return changed;
|
||||
}
|
||||
|
||||
void iterate_infos(block_manager<> &bm, info_map &infos) {
|
||||
while (iterate_infos_(bm, infos))
|
||||
;
|
||||
}
|
||||
|
||||
bool trees_are_compatible(node_info const &mapping, node_info const &devices) {
|
||||
for (auto thin_id : mapping.devices)
|
||||
if (devices.devices.find(thin_id) == devices.devices.end())
|
||||
return false;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool cmp_mapping_info(node_info const &lhs, node_info const &rhs) {
|
||||
return lhs.age > rhs.age;
|
||||
}
|
||||
|
||||
bool has_type(node_info const &i, unsigned bit) {
|
||||
return i.types & (1 << bit);
|
||||
}
|
||||
|
||||
vector<node_info>
|
||||
extract_mapping_candidates(info_map const &infos) {
|
||||
vector<node_info> results;
|
||||
|
||||
for (auto const &p : infos)
|
||||
if (p.second.orphan && has_type(p.second, TOP_LEVEL))
|
||||
results.push_back(p.second);
|
||||
|
||||
//sort(results.begin(), results.end(), cmp_mapping_info);
|
||||
|
||||
return results;
|
||||
}
|
||||
|
||||
bool cmp_device_info(node_info const &lhs, node_info const &rhs) {
|
||||
// FIXME: finish
|
||||
return false;
|
||||
//return lhs.dd_age > rhs.dd_age;
|
||||
}
|
||||
|
||||
vector<node_info>
|
||||
extract_device_candidates(info_map const &infos) {
|
||||
vector<node_info> results;
|
||||
|
||||
for (auto const &p : infos)
|
||||
if (p.second.orphan && has_type(p.second, DEVICE_DETAILS))
|
||||
results.push_back(p.second);
|
||||
|
||||
sort(results.begin(), results.end(), cmp_device_info);
|
||||
|
||||
return results;
|
||||
}
|
||||
|
||||
// Returns <mapping root>, <dev details root>
|
||||
//pair<block_address, block_address>
|
||||
void
|
||||
find_best_roots(block_manager<> &bm) {
|
||||
info_map infos;
|
||||
|
||||
scan_initial_infos(bm, infos);
|
||||
iterate_infos(bm, infos);
|
||||
|
||||
// These will be sorted into best first order
|
||||
vector<node_info> mapping_candidates = extract_mapping_candidates(infos);
|
||||
vector<node_info> device_candidates = extract_device_candidates(infos);
|
||||
|
||||
cerr << "mapping candidates (" << mapping_candidates.size() << "):\n";
|
||||
for (auto const &i : mapping_candidates)
|
||||
cerr << i.b << ", tree size = " << i.values << ", age = " << i.age << "\n";
|
||||
|
||||
cerr << "\ndevice candidates (" << device_candidates.size() << "):\n";
|
||||
for (auto const &i : device_candidates)
|
||||
cerr << i.b << ", tree size = " << i.values << ", age = " << i.age << "\n";
|
||||
|
||||
#if 0
|
||||
// Choose the best mapping tree, and then the best device tree
|
||||
// that is compatible.
|
||||
for (auto &m : mapping_candidates)
|
||||
for (auto &d : device_candidates)
|
||||
if (trees_are_compatible(m, d))
|
||||
return make_pair(m.b, d.b);
|
||||
#endif
|
||||
|
||||
// throw runtime_error("no compatible mapping/device trees");
|
||||
}
|
||||
}
|
||||
|
||||
//----------------------------------------------------------------
|
||||
|
||||
namespace {
|
||||
void raise_metadata_damage() {
|
||||
throw std::runtime_error("metadata contains errors (run thin_check for details).\n"
|
||||
@ -197,7 +544,7 @@ namespace {
|
||||
try {
|
||||
if (!opts_.skip_mappings_)
|
||||
emit_mappings(dev_id, tree_root);
|
||||
} catch (exception &e) {
|
||||
} catch (std::exception &e) {
|
||||
cerr << e.what();
|
||||
e_->end_device();
|
||||
throw;
|
||||
@ -246,6 +593,8 @@ namespace {
|
||||
void
|
||||
thin_provisioning::metadata_dump(metadata::ptr md, emitter::ptr e, dump_options const &opts)
|
||||
{
|
||||
find_best_roots(*md->tm_->get_bm());
|
||||
|
||||
details_extractor de(opts);
|
||||
device_tree_detail::damage_visitor::ptr dd_policy(details_damage_policy(opts.repair_));
|
||||
walk_device_tree(*md->details_, de, *dd_policy);
|
||||
|
@ -52,7 +52,7 @@ namespace {
|
||||
|
||||
metadata::ptr open_metadata(string const &path, struct flags &flags) {
|
||||
block_manager<>::ptr bm = open_bm(path, block_manager<>::READ_ONLY, !flags.use_metadata_snap);
|
||||
metadata::ptr md(flags.use_metadata_snap ? new metadata(bm, flags.snap_location) : new metadata(bm));
|
||||
metadata::ptr md(flags.use_metadata_snap ? new metadata(bm, flags.snap_location) : new metadata(bm, false));
|
||||
|
||||
return md;
|
||||
}
|
||||
|
@ -30,6 +30,8 @@
|
||||
#include "thin-provisioning/commands.h"
|
||||
#include "version.h"
|
||||
|
||||
using namespace boost;
|
||||
using namespace std;
|
||||
using namespace thin_provisioning;
|
||||
|
||||
//----------------------------------------------------------------
|
||||
@ -463,11 +465,13 @@ namespace {
|
||||
|
||||
class metadata_scanner {
|
||||
public:
|
||||
metadata_scanner(block_manager<>::ptr bm, uint64_t scan_begin, uint64_t scan_end)
|
||||
metadata_scanner(block_manager<>::ptr bm, uint64_t scan_begin, uint64_t scan_end,
|
||||
bool check_for_strings)
|
||||
: bm_(bm),
|
||||
scan_begin_(scan_begin),
|
||||
scan_end_(scan_end),
|
||||
index_(scan_begin) {
|
||||
index_(scan_begin),
|
||||
check_for_strings_(check_for_strings) {
|
||||
if (scan_end_ <= scan_begin_)
|
||||
throw std::runtime_error("badly formed region (end <= begin)");
|
||||
|
||||
@ -486,8 +490,6 @@ namespace {
|
||||
run_range_ = r.clone();
|
||||
}
|
||||
|
||||
virtual ~metadata_scanner() {}
|
||||
|
||||
std::unique_ptr<block_range> get_range() {
|
||||
std::unique_ptr<block_range> ret;
|
||||
|
||||
@ -507,7 +509,44 @@ namespace {
|
||||
return ret;
|
||||
}
|
||||
|
||||
map<block_address, vector<string>> const &get_strings() const {
|
||||
return strings_;
|
||||
}
|
||||
|
||||
private:
|
||||
bool interesting_char(char c)
|
||||
{
|
||||
return isalnum(c) || ispunct(c);
|
||||
}
|
||||
|
||||
unsigned printable_len(const char *b, const char *e)
|
||||
{
|
||||
const char *p = b;
|
||||
|
||||
while (p != e && interesting_char(*p))
|
||||
p++;
|
||||
|
||||
return p - b;
|
||||
}
|
||||
|
||||
// asci text within our metadata is a sure sign of corruption.
|
||||
optional<vector<string> >
|
||||
scan_strings(block_manager<>::read_ref rr)
|
||||
{
|
||||
vector<string> r;
|
||||
const char *data = reinterpret_cast<const char *>(rr.data()), *end = data + MD_BLOCK_SIZE;
|
||||
|
||||
while (data < end) {
|
||||
auto len = printable_len(data, end);
|
||||
if (len >= 4)
|
||||
r.push_back(string(data, data + len));
|
||||
|
||||
data += len + 1;
|
||||
}
|
||||
|
||||
return r.size() ? optional<vector<string>>(r) : optional<vector<string>>();
|
||||
}
|
||||
|
||||
block_range const &read_block(block_address b) {
|
||||
block_manager<>::read_ref rr = bm_->read_lock(b);
|
||||
int64_t ref_count;
|
||||
@ -516,6 +555,14 @@ namespace {
|
||||
} catch (std::exception &e) {
|
||||
ref_count = -1;
|
||||
}
|
||||
|
||||
if (check_for_strings_) {
|
||||
auto ss = scan_strings(rr);
|
||||
if (ss) {
|
||||
strings_.insert(make_pair(b, *ss));
|
||||
}
|
||||
}
|
||||
|
||||
return factory_.convert_to_range(rr, ref_count);
|
||||
}
|
||||
|
||||
@ -531,17 +578,24 @@ namespace {
|
||||
std::unique_ptr<block_range> run_range_;
|
||||
|
||||
range_factory factory_;
|
||||
|
||||
bool check_for_strings_;
|
||||
map<block_address, vector<string>> strings_;
|
||||
};
|
||||
|
||||
//-------------------------------------------------------------------
|
||||
|
||||
struct flags {
|
||||
flags(): exclusive_(true) {
|
||||
flags()
|
||||
: exclusive_(true),
|
||||
examine_corruption_(false)
|
||||
{
|
||||
}
|
||||
|
||||
boost::optional<block_address> scan_begin_;
|
||||
boost::optional<block_address> scan_end_;
|
||||
bool exclusive_;
|
||||
bool examine_corruption_;
|
||||
};
|
||||
|
||||
int scan_metadata_(string const &input,
|
||||
@ -552,11 +606,26 @@ namespace {
|
||||
block_address scan_begin = f.scan_begin_ ? *f.scan_begin_ : 0;
|
||||
block_address scan_end = f.scan_end_ ? *f.scan_end_ : bm->get_nr_blocks();
|
||||
|
||||
metadata_scanner scanner(bm, scan_begin, scan_end);
|
||||
metadata_scanner scanner(bm, scan_begin, scan_end, f.examine_corruption_);
|
||||
std::unique_ptr<block_range> r;
|
||||
while ((r = scanner.get_range())) {
|
||||
out << *r << std::endl;
|
||||
}
|
||||
|
||||
if (f.examine_corruption_) {
|
||||
auto ss = scanner.get_strings();
|
||||
|
||||
for (auto const &ps : ss) {
|
||||
out << ps.first << ": ";
|
||||
|
||||
unsigned total = 0;
|
||||
for (auto const &s : ps.second)
|
||||
total += s.length();
|
||||
|
||||
out << total << " bytes of text\n";
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -592,6 +661,7 @@ thin_scan_cmd::usage(std::ostream &out) const {
|
||||
<< " {-o|--output} <xml file>\n"
|
||||
<< " {--begin} <block#>\n"
|
||||
<< " {--end} <block#>\n"
|
||||
<< " {--examine-corruption}\n"
|
||||
<< " {-V|--version}" << endl;
|
||||
}
|
||||
|
||||
@ -605,6 +675,7 @@ thin_scan_cmd::run(int argc, char **argv)
|
||||
{ "version", no_argument, NULL, 'V'},
|
||||
{ "begin", required_argument, NULL, 1},
|
||||
{ "end", required_argument, NULL, 2},
|
||||
{ "examine-corruption", no_argument, NULL, 3 },
|
||||
{ NULL, no_argument, NULL, 0 }
|
||||
};
|
||||
boost::optional<string> output;
|
||||
@ -643,6 +714,10 @@ thin_scan_cmd::run(int argc, char **argv)
|
||||
}
|
||||
break;
|
||||
|
||||
case 3:
|
||||
f.examine_corruption_ = true;
|
||||
break;
|
||||
|
||||
default:
|
||||
usage(cerr);
|
||||
return 1;
|
||||
|
Loading…
Reference in New Issue
Block a user