vblk->disk = alloc_disk(1 << PART_BITS); 分配request_queue结构,从属于virtio-blk的gendisk结构下 q = vblk->disk->queue = blk_mq_init_queue(&virtio_mq_reg, vblk); 对request的操作处理函数都在virtio_mq_reg结构的virtio_mq_ops中: static struct blk_mq_ops virtio_mq_ops = { .queue_...
vblk->disk = alloc_disk(1 << PART_BITS); memset(&vblk->tag_set, 0, sizeof(vblk->tag_set)); vblk->tag_set.ops = &virtio_mq_ops; vblk->tag_set.queue_depth = virtblk_queue_depth; vblk->tag_set.numa_node = NUMA_NO_NODE; vblk->tag_set.flags = BLK_MQ_F_SHOULD_MERGE...
Then, we create three descriptors (virtio_alloc_desc() uses that desc_free variable along with the next pointers to track a big chain of free descriptor indexes). We populate each descriptor’s flags and length, and link them all together to form one chain. Finally, we stick that descripto...
@@ -1802,7 +1802,7 @@ static int fd_alloc_disk(int drive, int system) unit[drive].gendisk[system] = disk; err = add_disk(disk); if (err) blk_cleanup_disk(disk); put_disk(disk); return err; }2 changes: 1 addition & 1 deletion 2 drivers/block/aoe/aoeblk.c Original file...
Function The mr showblkalloclist command is used to view the waiting alloc block queue information.Format mr showblkalloclist <-p poolId> Parameters Parameter Description Value poolId Disk domain ID. The value ranges from 0 to n minus one, where n indicates the maximum number of disk ...
qemu-storage-daemon \--blockdev file,filename=/path/to/disk.qcow2,node-name=file \--blockdev qcow2,file=file,node-name=qcow2 \--exporttype=vduse-blk,id=vduse0,name=vduse0,node-name=qcow2,writable=on 容器、虚拟机或裸机 如介绍中所述,vDPA 支持不同的总线,例如vhost-vdpa和virtio-vdpa...
bt->msg_data = __alloc_percpu(BLK_TN_MAX_MSG, __alignof__(char));if(!bt->msg_data)gotoerr; ret= -ENOENT; mutex_lock(&blk_tree_mutex);if(!blk_tree_root) { blk_tree_root= debugfs_create_dir("block", NULL);---创建/sys/kernel/debug/block目录if(!blk_tree_root) { mutex_...
(capacity && nstats >= 0) { (gdb) 11465 rc = qemuMonitorBlockStatsUpdateCapacity(priv->mon, blockstats, false); (gdb) 11468 if (qemuDomainObjExitMonitor(driver, vm) < 0 || nstats < 0 || rc < 0) (gdb) 11471 if (VIR_ALLOC(*retstats) < 0) (gdb) 11474 if (entryname) { ...
mr showblkalloclist Function Themr showblkalloclistcommand is used to view the waiting alloc block queue information. Format mr showblkalloclist<-p poolId> Parameters Parameter Description Value poolIdDisk domain ID. The value ranges from 0 to n ...
disk = __alloc_disk_node(q, set->numa_node, lkclass); if (!disk) { blk_mq_destroy_queue(q); blk_put_queue(q); return ERR_PTR(-ENOMEM); }set_bit(GD_OWNS_QUEUE, &disk->state);2 changes: 2 additions & 0 deletions 2 block/bsg-lib.c Original file line numberDiff line ...