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-id = 1459
-title = "analyze-migration.py doesn't account for saved blocks"
-state = "opened"
-created_at = "2023-01-23T23:45:30.101Z"
-closed_at = "n/a"
-labels = ["Migration"]
-url = "https://gitlab.com/qemu-project/qemu/-/issues/1459"
-host-os = "Linux"
-host-arch = "N/A"
-qemu-version = "7.x"
-guest-os = "n/a"
-guest-arch = "n/a"
-description = """"""
-reproduce = """1. Make a migration snapshot that includes incremental block device (from HMP: `migrate -i "exec: cat > snap"`)
-2. Load the snapshot: `scripts/analyze-migration.py -f snap` 
-
-
-```
-Traceback (most recent call last):
-  File "scripts/analyze-migration.py", line 605, in <module>
-    dump.read(dump_memory = args.memory)
-  File "scripts/analyze-migration.py", line 539, in read
-    classdesc = self.section_classes[section_key]
-KeyError: ('block', 0)
-```"""
-additional = """Here's pseudocode derived from `block_load` in `migration/block.c`:
-
-```
-N blocks of the following:
-
-  read 64 bits: sector number and flags
-    (blk->sector << BDRV_SECTOR_BITS) | flags
-
-  if flags & BLK_MIG_FLAG_EOS:
-    break
-  if flags & BLK_MIG_FLAG_PROGRESS
-    continue
-  if flags & BLK_MIG_FLAG_DEVICE_BLOCK
-    byte: name length
-    length bytes: device name string
-    if not flags & BLK_MIG_FLAG_ZERO_BLOCK:
-      read (1 << 20) bytes 
-```"""