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scsi-disk: Account for failed operations

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Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: 0ead7b0e59c22926e033ca12725e3a31985ec46b.1446044838.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Alberto Garcia 2015-10-28 17:33:17 +02:00 committed by Kevin Wolf
parent b88b3c8b83
commit d7628080f3
1 changed files with 31 additions and 15 deletions
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40
hw/scsi/scsi-disk.c
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@ -90,7 +90,7 @@ struct SCSIDiskState
bool tray_locked;
};
static int scsi_handle_rw_error(SCSIDiskReq *r, int error);
static int scsi_handle_rw_error(SCSIDiskReq *r, int error, bool acct_failed);
static void scsi_free_request(SCSIRequest *req)
{
@ -169,18 +169,18 @@ static void scsi_aio_complete(void *opaque, int ret)
assert(r->req.aiocb != NULL);
r->req.aiocb = NULL;
block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct);
if (r->req.io_canceled) {
scsi_req_cancel_complete(&r->req);
goto done;
}
if (ret < 0) {
if (scsi_handle_rw_error(r, -ret)) {
if (scsi_handle_rw_error(r, -ret, true)) {
goto done;
}
}
block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct);
scsi_req_complete(&r->req, GOOD);
done:
@ -247,7 +247,7 @@ static void scsi_dma_complete_noio(SCSIDiskReq *r, int ret)
}
if (ret < 0) {
if (scsi_handle_rw_error(r, -ret)) {
if (scsi_handle_rw_error(r, -ret, false)) {
goto done;
}
}
@ -273,7 +273,11 @@ static void scsi_dma_complete(void *opaque, int ret)
assert(r->req.aiocb != NULL);
r->req.aiocb = NULL;
if (ret < 0) {
block_acct_failed(blk_get_stats(s->qdev.conf.blk), &r->acct);
} else {
block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct);
}
scsi_dma_complete_noio(r, ret);
}
@ -285,18 +289,18 @@ static void scsi_read_complete(void * opaque, int ret)
assert(r->req.aiocb != NULL);
r->req.aiocb = NULL;
block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct);
if (r->req.io_canceled) {
scsi_req_cancel_complete(&r->req);
goto done;
}
if (ret < 0) {
if (scsi_handle_rw_error(r, -ret)) {
if (scsi_handle_rw_error(r, -ret, true)) {
goto done;
}
}
block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct);
DPRINTF("Data ready tag=0x%x len=%zd\n", r->req.tag, r->qiov.size);
n = r->qiov.size / 512;
@ -322,7 +326,7 @@ static void scsi_do_read(SCSIDiskReq *r, int ret)
}
if (ret < 0) {
if (scsi_handle_rw_error(r, -ret)) {
if (scsi_handle_rw_error(r, -ret, false)) {
goto done;
}
}
@ -355,7 +359,11 @@ static void scsi_do_read_cb(void *opaque, int ret)
assert (r->req.aiocb != NULL);
r->req.aiocb = NULL;
if (ret < 0) {
block_acct_failed(blk_get_stats(s->qdev.conf.blk), &r->acct);
} else {
block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct);
}
scsi_do_read(opaque, ret);
}
@ -407,7 +415,7 @@ static void scsi_read_data(SCSIRequest *req)
* scsi_handle_rw_error always manages its reference counts, independent
* of the return value.
*/
static int scsi_handle_rw_error(SCSIDiskReq *r, int error)
static int scsi_handle_rw_error(SCSIDiskReq *r, int error, bool acct_failed)
{
bool is_read = (r->req.cmd.mode == SCSI_XFER_FROM_DEV);
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
@ -415,6 +423,9 @@ static int scsi_handle_rw_error(SCSIDiskReq *r, int error)
is_read, error);
if (action == BLOCK_ERROR_ACTION_REPORT) {
if (acct_failed) {
block_acct_failed(blk_get_stats(s->qdev.conf.blk), &r->acct);
}
switch (error) {
case ENOMEDIUM:
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM));
@ -452,7 +463,7 @@ static void scsi_write_complete_noio(SCSIDiskReq *r, int ret)
}
if (ret < 0) {
if (scsi_handle_rw_error(r, -ret)) {
if (scsi_handle_rw_error(r, -ret, false)) {
goto done;
}
}
@ -481,7 +492,11 @@ static void scsi_write_complete(void * opaque, int ret)
assert (r->req.aiocb != NULL);
r->req.aiocb = NULL;
if (ret < 0) {
block_acct_failed(blk_get_stats(s->qdev.conf.blk), &r->acct);
} else {
block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct);
}
scsi_write_complete_noio(r, ret);
}
@ -1592,7 +1607,7 @@ static void scsi_unmap_complete_noio(UnmapCBData *data, int ret)
}
if (ret < 0) {
if (scsi_handle_rw_error(r, -ret)) {
if (scsi_handle_rw_error(r, -ret, false)) {
goto done;
}
}
@ -1696,18 +1711,19 @@ static void scsi_write_same_complete(void *opaque, int ret)
assert(r->req.aiocb != NULL);
r->req.aiocb = NULL;
block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct);
if (r->req.io_canceled) {
scsi_req_cancel_complete(&r->req);
goto done;
}
if (ret < 0) {
if (scsi_handle_rw_error(r, -ret)) {
if (scsi_handle_rw_error(r, -ret, true)) {
goto done;
}
}
block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct);
data->nb_sectors -= data->iov.iov_len / 512;
data->sector += data->iov.iov_len / 512;
data->iov.iov_len = MIN(data->nb_sectors * 512, data->iov.iov_len);