bytemark/flexnbd-c
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

flexnbd mirror: If the final run would be longer than the file size, truncate to file size

Browse Source 
This fixes migrations of images that are not exactly divisible by 4096
This commit is contained in:
nick
2013-07-23 11:00:51 +01:00
parent afe76debf7
commit 5c5636b053
1 changed files with 8 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
src/mirror.c
View File

@@ -173,6 +173,14 @@ int mirror_pass(struct server * serve, int is_last_pass, uint64_t *written)
while (current < serve->size) { while (current < serve->size) {
int run = bitset_run_count(map, current, mirror_longest_write); int run = bitset_run_count(map, current, mirror_longest_write);
if ( current + run > serve->size ) {
debug(
"Size not divisible by %i, adjusting final block",
block_allocation_resolution
);
run -= (( current + run ) - serve->size );
}
debug("mirror current=%ld, run=%d", current, run); debug("mirror current=%ld, run=%d", current, run);
/* FIXME: we could avoid sending sparse areas of the /* FIXME: we could avoid sending sparse areas of the