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[Qemu-devel] [PULL 07/11] iscsi: add logical block provisioning informat
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PULL 07/11] iscsi: add logical block provisioning information to iscsilun |
Date: |
Thu, 12 Sep 2013 13:17:10 +0200 |
From: Peter Lieven <address@hidden>
Signed-off-by: Peter Lieven <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
block/iscsi.c | 77 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 77 insertions(+)
diff --git a/block/iscsi.c b/block/iscsi.c
index 60b3967..bfd659a 100644
--- a/block/iscsi.c
+++ b/block/iscsi.c
@@ -52,6 +52,10 @@ typedef struct IscsiLun {
uint64_t num_blocks;
int events;
QEMUTimer *nop_timer;
+ uint8_t lbpme;
+ uint8_t lbprz;
+ struct scsi_inquiry_logical_block_provisioning lbp;
+ struct scsi_inquiry_block_limits bl;
} IscsiLun;
typedef struct IscsiAIOCB {
@@ -999,6 +1003,8 @@ static int iscsi_readcapacity_sync(IscsiLun *iscsilun)
} else {
iscsilun->block_size = rc16->block_length;
iscsilun->num_blocks = rc16->returned_lba + 1;
+ iscsilun->lbpme = rc16->lbpme;
+ iscsilun->lbprz = rc16->lbprz;
}
}
break;
@@ -1051,6 +1057,37 @@ static QemuOptsList runtime_opts = {
},
};
+static struct scsi_task *iscsi_do_inquiry(struct iscsi_context *iscsi,
+ int lun, int evpd, int pc) {
+ int full_size;
+ struct scsi_task *task = NULL;
+ task = iscsi_inquiry_sync(iscsi, lun, evpd, pc, 64);
+ if (task == NULL || task->status != SCSI_STATUS_GOOD) {
+ goto fail;
+ }
+ full_size = scsi_datain_getfullsize(task);
+ if (full_size > task->datain.size) {
+ scsi_free_scsi_task(task);
+
+ /* we need more data for the full list */
+ task = iscsi_inquiry_sync(iscsi, lun, evpd, pc, full_size);
+ if (task == NULL || task->status != SCSI_STATUS_GOOD) {
+ goto fail;
+ }
+ }
+
+ return task;
+
+fail:
+ error_report("iSCSI: Inquiry command failed : %s",
+ iscsi_get_error(iscsi));
+ if (task) {
+ scsi_free_scsi_task(task);
+ return NULL;
+ }
+ return NULL;
+}
+
/*
* We support iscsi url's on the form
* iscsi://[<username>%<password>@]<host>[:<port>]/<targetname>/<lun>
@@ -1180,6 +1217,46 @@ static int iscsi_open(BlockDriverState *bs, QDict
*options, int flags)
bs->sg = 1;
}
+ if (iscsilun->lbpme) {
+ struct scsi_inquiry_logical_block_provisioning *inq_lbp;
+ task = iscsi_do_inquiry(iscsilun->iscsi, iscsilun->lun, 1,
+
SCSI_INQUIRY_PAGECODE_LOGICAL_BLOCK_PROVISIONING);
+ if (task == NULL) {
+ ret = -EINVAL;
+ goto out;
+ }
+ inq_lbp = scsi_datain_unmarshall(task);
+ if (inq_lbp == NULL) {
+ error_report("iSCSI: failed to unmarshall inquiry datain blob");
+ ret = -EINVAL;
+ goto out;
+ }
+ memcpy(&iscsilun->lbp, inq_lbp,
+ sizeof(struct scsi_inquiry_logical_block_provisioning));
+ scsi_free_scsi_task(task);
+ task = NULL;
+ }
+
+ if (iscsilun->lbp.lbpu || iscsilun->lbp.lbpws) {
+ struct scsi_inquiry_block_limits *inq_bl;
+ task = iscsi_do_inquiry(iscsilun->iscsi, iscsilun->lun, 1,
+ SCSI_INQUIRY_PAGECODE_BLOCK_LIMITS);
+ if (task == NULL) {
+ ret = -EINVAL;
+ goto out;
+ }
+ inq_bl = scsi_datain_unmarshall(task);
+ if (inq_bl == NULL) {
+ error_report("iSCSI: failed to unmarshall inquiry datain blob");
+ ret = -EINVAL;
+ goto out;
+ }
+ memcpy(&iscsilun->bl, inq_bl,
+ sizeof(struct scsi_inquiry_block_limits));
+ scsi_free_scsi_task(task);
+ task = NULL;
+ }
+
#if defined(LIBISCSI_FEATURE_NOP_COUNTER)
/* Set up a timer for sending out iSCSI NOPs */
iscsilun->nop_timer = timer_new_ms(QEMU_CLOCK_REALTIME,
iscsi_nop_timed_event, iscsilun);
--
1.8.3.1
- [Qemu-devel] [PULL 00/11] SCSI patches for 2013-09-11, Paolo Bonzini, 2013/09/12
- [Qemu-devel] [PULL 02/11] spapr-vscsi: add task management, Paolo Bonzini, 2013/09/12
- [Qemu-devel] [PULL 04/11] scsi: Fix scsi_bus_legacy_add_drive() scsi-generic with serial, Paolo Bonzini, 2013/09/12
- [Qemu-devel] [PULL 05/11] hw/scsi/lsi53c895a: Use sextract32 for sign-extension, Paolo Bonzini, 2013/09/12
- [Qemu-devel] [PULL 01/11] scsi: prefer UUID to VM name for the initiator name, Paolo Bonzini, 2013/09/12
- [Qemu-devel] [PULL 06/11] hw/scsi/lsi53c895a: Use deposit32 rather than handcoded shift/mask, Paolo Bonzini, 2013/09/12
- [Qemu-devel] [PULL 03/11] virtio-scsi: Make type virtio-scsi-common abstract, Paolo Bonzini, 2013/09/12
- [Qemu-devel] [PULL 07/11] iscsi: add logical block provisioning information to iscsilun,
Paolo Bonzini <=
- [Qemu-devel] [PULL 08/11] iscsi: add .bdrv_get_block_status, Paolo Bonzini, 2013/09/12
[Qemu-devel] [PULL 09/11] iscsi: split discard requests in multiple parts, Paolo Bonzini, 2013/09/12
[Qemu-devel] [PULL 11/11] spapr-vscsi: Report error on unsupported MAD requests, Paolo Bonzini, 2013/09/12
[Qemu-devel] [PULL 10/11] spapr-vscsi: Adding VSCSI capabilities, Paolo Bonzini, 2013/09/12