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block: expect get_block_status errors in bdrv_make_zero 

during testing around with 4k LUNs a bad target implementation
triggert an -EIO in iscsi_get_block_status, but it got never caught
resulting in an infinite loop.

CC: qemu-stable@nongnu.org
Signed-off-by: Peter Lieven <pl@kamp.de>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Peter Lieven 2013-12-12 13:57:05 +01:00 committed by Kevin Wolf
parent f671d173c7
commit 3d94ce60ae
1 changed files with 5 additions and 0 deletions
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5
block.c
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@ -2421,6 +2421,11 @@ int bdrv_make_zero(BlockDriverState *bs, BdrvRequestFlags flags)
nb_sectors = INT_MAX;
}
ret = bdrv_get_block_status(bs, sector_num, nb_sectors, &n);
if (ret < 0) {
error_report("error getting block status at sector %" PRId64 ": %s",
sector_num, strerror(-ret));
return ret;
}
if (ret & BDRV_BLOCK_ZERO) {
sector_num += n;
continue;