Attachment 885795 Details for Bug 1027565 – dump ramblocks in stage 1 of the RHEL-6 outgoing migration (debug patch)

[patch] dump ramblocks in stage 1 of the RHEL-6 outgoing migration (debug patch)

0001-dump-ramblocks-in-stage-1-of-ram_save_live.patch (text/plain), 2.36 KB, created by Laszlo Ersek on 2014-04-12 23:03:31 UTC

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Creator: Laszlo Ersek

Created: 2014-04-12 23:03:31 UTC

Size: 2.36 KB

patch

obsolete

>From 2ca2a156ddcf1d193fe279f838e65af3e1419061 Mon Sep 17 00:00:00 2001
>From: Laszlo Ersek <lersek@redhat.com>
>Date: Sat, 12 Apr 2014 21:47:06 +0200
>Subject: [RHEL-6.6 qemu-kvm PATCH] dump ramblocks in stage 1 of
> ram_save_live()
>
>Signed-off-by: Laszlo Ersek <lersek@redhat.com>
>---
> vl.c | 36 ++++++++++++++++++++++++++++++++++++
> 1 file changed, 36 insertions(+)
>
>diff --git a/vl.c b/vl.c
>index 01e08c0..a2c14bc 100644
>--- a/vl.c
>+++ b/vl.c
>@@ -2879,19 +2879,55 @@ static int ram_save_live(Monitor *mon, QEMUFile *f, int stage, void *opaque)
>     }
> 
>     if (stage == 1) {
>+        unsigned blknr;
>         RAMBlock *block;
>         bytes_transferred = 0;
>         last_block = NULL;
>         last_offset = 0;
> 
>         /* Make sure all dirty bits are set */
>+        blknr = 0;
>         QLIST_FOREACH(block, &ram_list.blocks, next) {
>+            char *fname, *c;
>+            int fd;
>+            ssize_t wr;
>+
>+            fname = g_strdup_printf(
>+                        "ramblock.%02u.%0*lx.%0*lx.%08" PRIx32 ",%s", blknr,
>+                         (int)(sizeof block->offset) * 2, block->offset,
>+                         (int)(sizeof block->length) * 2, block->length,
>+                         block->flags, block->idstr);
>+            for (c = fname; *c != '\0'; ++c) {
>+                if (*c == '/') {
>+                    *c = '_';
>+                }
>+            }
>+            fprintf(stderr, "%s\n", fname);
>+            fd = open(fname,
>+                      O_WRONLY | O_CLOEXEC | O_CREAT | O_NOCTTY | O_TRUNC,
>+                      0666);
>+            if (fd == -1) {
>+                perror("open()");
>+                abort();
>+            }
>+            wr = qemu_write_full(fd, block->host, block->length);
>+            if (wr != block->length) {
>+                perror("write()");
>+                abort();
>+            }
>+            if (close(fd) == -1) {
>+                perror("close()");
>+                abort();
>+            }
>+            g_free(fname);
>+
>             for (addr = block->offset; addr < block->offset + block->length;
>                  addr += TARGET_PAGE_SIZE) {
>                 if (!cpu_physical_memory_get_dirty(addr,
>                                                    MIGRATION_DIRTY_FLAG))
>                     cpu_physical_memory_set_dirty(addr);
>             }
>+            ++blknr;
>         }
> 
>         /* Enable dirty memory tracking */
>-- 
>1.8.3.1
>

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Attachments on bug 1027565: 885244 | 885245 | 885252 | 885649 | 885650 | 885795 | 885838 | 886494 | 886593 | 886840 | 886841 | 886964 | 888022 | 888273