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Date: Fri, 19 Jun 2020 00:27:19 +0900
From: Wang Shilong <wangshilong1991@...il.com>
To: linux-ext4@...r.kernel.org
Cc: lixi@....com, adilger@...ger.ca, wangshilong1991@...il.com,
sihara@....com, Wang Shilong <wshilong@....com>
Subject: [RFC PATCH v2 16/51] e2fsck: print thread log properly
From: Li Xi <lixi@....com>
When multi-thread fsck is enabled, logs printed from multiple
threads could overlap with each other. The overlap sometimes
makes the logs unreadable because log_out() is used multiple times
for a single line.
This patch adds leading [Thread XXX] to each logs if multi-thread
is enabed by -m option.
This patch also adds message to show the group ranges and inode
numbers for each thread, which is useful for debuging multi-thread
check.
Signed-off-by: Li Xi <lixi@....com>
Signed-off-by: Wang Shilong <wshilong@....com>
---
e2fsck/e2fsck.h | 4 ++
e2fsck/pass1.c | 17 ++++++++-
e2fsck/problem.c | 4 ++
e2fsck/util.c | 56 ++++++++++++++++++++++++++--
tests/f_multithread/expect.1 | 4 +-
tests/f_multithread_logfile/expect.1 | 4 +-
tests/f_multithread_no/expect.1 | 4 +-
7 files changed, 86 insertions(+), 7 deletions(-)
diff --git a/e2fsck/e2fsck.h b/e2fsck/e2fsck.h
index 896f5f39..121d1b9b 100644
--- a/e2fsck/e2fsck.h
+++ b/e2fsck/e2fsck.h
@@ -239,6 +239,10 @@ struct e2fsck_thread {
dgrp_t et_group_next;
/* Thread index */
int et_thread_index;
+ /* Scanned inode number */
+ ext2_ino_t et_inode_number;
+ char et_log_buf[2048];
+ char et_log_length;
};
struct e2fsck_struct {
diff --git a/e2fsck/pass1.c b/e2fsck/pass1.c
index c676cbbc..64666663 100644
--- a/e2fsck/pass1.c
+++ b/e2fsck/pass1.c
@@ -1435,6 +1435,8 @@ void _e2fsck_pass1(e2fsck_t ctx)
}
if (!ino)
break;
+ if (ctx->global_ctx)
+ ctx->thread_info.et_inode_number++;
pctx.ino = ino;
pctx.inode = inode;
ctx->stashed_ino = ino;
@@ -2362,7 +2364,12 @@ static errcode_t e2fsck_pass1_thread_prepare(e2fsck_t global_ctx,
else
tinfo->et_group_end = average_group * (thread_index + 1);
tinfo->et_group_next = tinfo->et_group_start;
-
+ tinfo->et_inode_number = 0;
+ tinfo->et_log_buf[0] = '\0';
+ tinfo->et_log_length = 0;
+ if (thread_context->options & E2F_OPT_MULTITHREAD)
+ log_out(thread_context, _("Scan group range [%d, %d)\n"),
+ tinfo->et_group_start, tinfo->et_group_end);
thread_context->fs = thread_fs;
*thread_ctx = thread_context;
return 0;
@@ -2403,6 +2410,7 @@ static int e2fsck_pass1_thread_join_one(e2fsck_t global_ctx, e2fsck_t thread_ctx
global_ctx->fs = global_fs;
global_ctx->logf = global_logf;
global_ctx->problem_logf = global_problem_logf;
+ global_ctx->global_ctx = NULL;
/*
* PASS1_COPY_CTX_BITMAP might return directly from this function,
@@ -2489,6 +2497,12 @@ static void *e2fsck_pass1_thread(void *arg)
_e2fsck_pass1(thread_ctx);
out:
+ if (thread_ctx->options & E2F_OPT_MULTITHREAD)
+ log_out(thread_ctx,
+ _("Scanned group range [%lu, %lu), inodes %lu\n"),
+ thread_ctx->thread_info.et_group_start,
+ thread_ctx->thread_info.et_group_end,
+ thread_ctx->thread_info.et_inode_number);
return NULL;
}
@@ -2616,6 +2630,7 @@ static errcode_t scan_callback(ext2_filsys fs,
if (ctx->global_ctx) {
tinfo = &ctx->thread_info;
+ //printf("iii group %d finished\n", tinfo->et_group_next);
tinfo->et_group_next++;
if (tinfo->et_group_next >= tinfo->et_group_end)
return EXT2_ET_SCAN_FINISHED;
diff --git a/e2fsck/problem.c b/e2fsck/problem.c
index 22c2652c..ff52099f 100644
--- a/e2fsck/problem.c
+++ b/e2fsck/problem.c
@@ -2481,6 +2481,10 @@ int fix_problem(e2fsck_t ctx, problem_t code, struct problem_context *pctx)
if (*message)
message = _(message);
if (!suppress) {
+ if ((ctx->options & E2F_OPT_MULTITHREAD) && ctx->global_ctx)
+ printf("[Thread %d] ",
+ ctx->thread_info.et_thread_index);
+
if ((ctx->options & E2F_OPT_PREEN) &&
!(ptr->flags & PR_PREEN_NOHDR)) {
printf("%s: ", ctx->device_name ?
diff --git a/e2fsck/util.c b/e2fsck/util.c
index 8cebd95a..ffa5c64b 100644
--- a/e2fsck/util.c
+++ b/e2fsck/util.c
@@ -11,6 +11,7 @@
#include "config.h"
#include <stdlib.h>
+#include <assert.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
@@ -88,13 +89,62 @@ out:
exit(exit_value);
}
+static void thread_log_out(struct e2fsck_thread *tinfo)
+{
+ printf("[Thread %d] %s", tinfo->et_thread_index,
+ tinfo->et_log_buf);
+ tinfo->et_log_length = 0;
+ tinfo->et_log_buf[0] = '\0';
+}
+
void log_out(e2fsck_t ctx, const char *fmt, ...)
{
va_list pvar;
+ struct e2fsck_thread *tinfo;
+ int buf_size;
+ int msg_size;
+ int left_size;
+ int fmt_length = strlen(fmt);
+
+ if ((ctx->options & E2F_OPT_MULTITHREAD) && ctx->global_ctx) {
+ tinfo = &ctx->thread_info;
+ buf_size = sizeof(tinfo->et_log_buf);
+ left_size = buf_size - tinfo->et_log_length;
+
+ va_start(pvar, fmt);
+ msg_size = vsnprintf(tinfo->et_log_buf + tinfo->et_log_length,
+ left_size, fmt, pvar);
+ va_end(pvar);
+
+ if (msg_size >= left_size) {
+ tinfo->et_log_buf[tinfo->et_log_length] = '\0';
+
+ assert(msg_size < buf_size);
+ if (msg_size < buf_size) {
+ thread_log_out(tinfo);
+
+ va_start(pvar, fmt);
+ msg_size = vsnprintf(tinfo->et_log_buf, buf_size,
+ fmt, pvar);
+ va_end(pvar);
+
+ tinfo->et_log_length += msg_size;
+ tinfo->et_log_buf[tinfo->et_log_length] = '\0';
+ }
+ } else {
+ tinfo->et_log_length += msg_size;
+ tinfo->et_log_buf[tinfo->et_log_length] = '\0';
+ }
+
+ if (tinfo->et_log_length > 0 &&
+ tinfo->et_log_buf[tinfo->et_log_length - 1] == '\n')
+ thread_log_out(tinfo);
+ } else {
+ va_start(pvar, fmt);
+ vprintf(fmt, pvar);
+ va_end(pvar);
+ }
- va_start(pvar, fmt);
- vprintf(fmt, pvar);
- va_end(pvar);
if (ctx->logf) {
va_start(pvar, fmt);
vfprintf(ctx->logf, fmt, pvar);
diff --git a/tests/f_multithread/expect.1 b/tests/f_multithread/expect.1
index e2b954d0..8d2acd2b 100644
--- a/tests/f_multithread/expect.1
+++ b/tests/f_multithread/expect.1
@@ -1,6 +1,8 @@
ext2fs_open2: Bad magic number in super-block
../e2fsck/e2fsck: Superblock invalid, trying backup blocks...
-Pass 1: Checking inodes, blocks, and sizes
+[Thread 0] Scan group range [0, 2)
+[Thread 0] Pass 1: Checking inodes, blocks, and sizes
+[Thread 0] Scanned group range [0, 2), inodes 3008
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
diff --git a/tests/f_multithread_logfile/expect.1 b/tests/f_multithread_logfile/expect.1
index e2b954d0..8d2acd2b 100644
--- a/tests/f_multithread_logfile/expect.1
+++ b/tests/f_multithread_logfile/expect.1
@@ -1,6 +1,8 @@
ext2fs_open2: Bad magic number in super-block
../e2fsck/e2fsck: Superblock invalid, trying backup blocks...
-Pass 1: Checking inodes, blocks, and sizes
+[Thread 0] Scan group range [0, 2)
+[Thread 0] Pass 1: Checking inodes, blocks, and sizes
+[Thread 0] Scanned group range [0, 2), inodes 3008
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
diff --git a/tests/f_multithread_no/expect.1 b/tests/f_multithread_no/expect.1
index d14c4083..f85a3382 100644
--- a/tests/f_multithread_no/expect.1
+++ b/tests/f_multithread_no/expect.1
@@ -1,6 +1,8 @@
ext2fs_open2: Bad magic number in super-block
../e2fsck/e2fsck: Superblock invalid, trying backup blocks...
-Pass 1: Checking inodes, blocks, and sizes
+[Thread 0] Scan group range [0, 2)
+[Thread 0] Pass 1: Checking inodes, blocks, and sizes
+[Thread 0] Scanned group range [0, 2), inodes 3008
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
--
2.25.4
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