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-rw-r--r--block/iscsi.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/block/iscsi.c b/block/iscsi.c
index 3095887a27..1cafa782a1 100644
--- a/block/iscsi.c
+++ b/block/iscsi.c
@@ -1384,6 +1384,20 @@ static int iscsi_open(BlockDriverState *bs, QDict *options, int flags,
sizeof(struct scsi_inquiry_block_limits));
scsi_free_scsi_task(task);
task = NULL;
+
+ if (iscsilun->bl.max_unmap < 0xffffffff) {
+ bs->bl.max_discard = sector_lun2qemu(iscsilun->bl.max_unmap,
+ iscsilun);
+ }
+ bs->bl.discard_alignment = sector_lun2qemu(iscsilun->bl.opt_unmap_gran,
+ iscsilun);
+
+ if (iscsilun->bl.max_ws_len < 0xffffffff) {
+ bs->bl.max_write_zeroes = sector_lun2qemu(iscsilun->bl.max_ws_len,
+ iscsilun);
+ }
+ bs->bl.write_zeroes_alignment = sector_lun2qemu(iscsilun->bl.opt_unmap_gran,
+ iscsilun);
}
#if defined(LIBISCSI_FEATURE_NOP_COUNTER)