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vhost-user-scsi: support reconnect to backend

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If the backend crashes and restarts, the device is broken.
This patch adds reconnect for vhost-user-scsi.

This patch also improves the error messages, and reports some silent errors.

Tested with spdk backend.

Signed-off-by: Li Feng <fengli@smartx.com>
Message-Id: <20231009044735.941655-4-fengli@smartx.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
This commit is contained in:
Li Feng 2023-10-09 12:46:59 +08:00 • committed by Michael S. Tsirkin
parent 4dfcc09f48
commit 7962e432b4
5 changed files with 201 additions and 30 deletions
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6
hw/scsi/vhost-scsi.c
View file

@ -75,6 +75,7 @@ static int vhost_scsi_start(VHostSCSI *s)
int ret, abi_version;
VHostSCSICommon *vsc = VHOST_SCSI_COMMON(s);
const VhostOps *vhost_ops = vsc->dev.vhost_ops;
Error *local_err = NULL;
ret = vhost_ops->vhost_scsi_get_abi_version(&vsc->dev, &abi_version);
if (ret < 0) {
@ -88,14 +89,15 @@ static int vhost_scsi_start(VHostSCSI *s)
return -ENOSYS;
}
ret = vhost_scsi_common_start(vsc);
ret = vhost_scsi_common_start(vsc, &local_err);
if (ret < 0) {
error_reportf_err(local_err, "Error starting vhost-scsi");
return ret;
}
ret = vhost_scsi_set_endpoint(s);
if (ret < 0) {
error_report("Error setting vhost-scsi endpoint");
error_reportf_err(local_err, "Error setting vhost-scsi endpoint");
vhost_scsi_common_stop(vsc);
}