search for: virtio_blk_s_unsupp

...irtio block driver is allowed to try SCSI commands. * It'd be nice if we supported eject, for example, but we don't. */ - if (out->type & VIRTIO_BLK_T_SCSI_CMD) { + if (out->type == VIRTIO_BLK_T_GET_ID) { + fprintf(stderr, "GET ID command unsupported\n"); + *in = VIRTIO_BLK_S_UNSUPP; + wlen = sizeof(*in); + } else if (out->type & VIRTIO_BLK_T_SCSI_CMD) { fprintf(stderr, "Scsi commands unsupported\n"); *in = VIRTIO_BLK_S_UNSUPP; wlen = sizeof(*in); @@ -1751,6 +1755,9 @@ static void setup_block_file(const char add_feature(dev, VIRTIO_BLK_F_SEG_MAX);...

...irtio block driver is allowed to try SCSI commands. * It'd be nice if we supported eject, for example, but we don't. */ - if (out->type & VIRTIO_BLK_T_SCSI_CMD) { + if (out->type == VIRTIO_BLK_T_GET_ID) { + fprintf(stderr, "GET ID command unsupported\n"); + *in = VIRTIO_BLK_S_UNSUPP; + wlen = sizeof(*in); + } else if (out->type & VIRTIO_BLK_T_SCSI_CMD) { fprintf(stderr, "Scsi commands unsupported\n"); *in = VIRTIO_BLK_S_UNSUPP; wlen = sizeof(*in); @@ -1751,6 +1755,9 @@ static void setup_block_file(const char add_feature(dev, VIRTIO_BLK_F_SEG_MAX);...

...o_blk_outhdr +{ + /* VIRTIO_BLK_T* */ + uint32_t type; + /* io priority. */ + uint32_t ioprio; + /* Sector (ie. 512 byte offset) */ + uint64_t sector; + /* Where to put reply. */ + uint64_t id; +}; + +#define VIRTIO_BLK_S_OK 0 +#define VIRTIO_BLK_S_IOERR 1 +#define VIRTIO_BLK_S_UNSUPP 2 + +/* This is the first element of the write scatter-gather list */ +struct virtio_blk_inhdr +{ + unsigned char status; +}; + +typedef struct VirtIOBlock +{ + VirtIODevice vdev; + BlockDriverState *bs; +} VirtIOBlock; + +static VirtIOBlock *to_virtio_blk(VirtIODevice *vdev) +{ + re...

...o_blk_outhdr +{ + /* VIRTIO_BLK_T* */ + uint32_t type; + /* io priority. */ + uint32_t ioprio; + /* Sector (ie. 512 byte offset) */ + uint64_t sector; + /* Where to put reply. */ + uint64_t id; +}; + +#define VIRTIO_BLK_S_OK 0 +#define VIRTIO_BLK_S_IOERR 1 +#define VIRTIO_BLK_S_UNSUPP 2 + +/* This is the first element of the write scatter-gather list */ +struct virtio_blk_inhdr +{ + unsigned char status; +}; + +typedef struct VirtIOBlock +{ + VirtIODevice vdev; + BlockDriverState *bs; +} VirtIOBlock; + +static VirtIOBlock *to_virtio_blk(VirtIODevice *vdev) +{ + re...

Hi, Jens & Rusty This version is rebased against linux-next which resolves the conflict with Paolo Bonzini's 'virtio-blk: allow toggling host cache between writeback and writethrough' patch. Patch 1/3 and 2/3 applies on linus's master as well. Since Rusty will pick up patch 3/3 so the changes to block core (adding blk_bio_map_sg()) will have a user. Jens, could you please

Hi, Jens & Rusty This version is rebased against linux-next which resolves the conflict with Paolo Bonzini's 'virtio-blk: allow toggling host cache between writeback and writethrough' patch. Patch 1/3 and 2/3 applies on linus's master as well. Since Rusty will pick up patch 3/3 so the changes to block core (adding blk_bio_map_sg()) will have a user. Jens, could you please

In response to Avi's excellent analysis, I've updated virtio as promised (apologies for the delay, travel got in the way). === This attempts to implement a "virtual I/O" layer which should allow common drivers to be efficiently used across most virtual I/O mechanisms. It will no-doubt need further enhancement. The details of probing the device are left to hypervisor-specific

In response to Avi's excellent analysis, I've updated virtio as promised (apologies for the delay, travel got in the way). === This attempts to implement a "virtual I/O" layer which should allow common drivers to be efficiently used across most virtual I/O mechanisms. It will no-doubt need further enhancement. The details of probing the device are left to hypervisor-specific

This patchset implements bio-based IO path for virito-blk to improve performance. Fio test shows it gives, 28%, 24%, 21%, 16% IOPS boost and 32%, 17%, 21%, 16% latency improvement for sequential read/write, random read/write respectively. Asias He (2): block: Add blk_bio_map_sg() helper virtio-blk: Add bio-based IO path for virtio-blk block/blk-merge.c | 63 ++++++++++++++

This patchset implements bio-based IO path for virito-blk to improve performance. Fio test shows it gives, 28%, 24%, 21%, 16% IOPS boost and 32%, 17%, 21%, 16% latency improvement for sequential read/write, random read/write respectively. Asias He (2): block: Add blk_bio_map_sg() helper virtio-blk: Add bio-based IO path for virtio-blk block/blk-merge.c | 63 ++++++++++++++

...471813 + +\emph on +status +\emph default + +\change_unchanged +byte is written by the device: either VIRTIO_BLK_S_OK +\change_inserted 0 1266528888 + for success, +\change_deleted 0 1266528889 + or +\change_unchanged + VIRTIO_BLK_S_IOERR +\change_inserted 0 1266529171 + for host or guest error or VIRTIO_BLK_S_UNSUPP for a request unsupported + by host: +\change_deleted 0 1266471769 +. +\change_inserted 0 1266471782 + +\begin_inset listings +inline false +status open + +\begin_layout Plain Layout + +\change_inserted 0 1266471782 + +#define VIRTIO_BLK_S_OK 0 +\end_layout + +\begin_layout Plain Layout + +\...

...471813 + +\emph on +status +\emph default + +\change_unchanged +byte is written by the device: either VIRTIO_BLK_S_OK +\change_inserted 0 1266528888 + for success, +\change_deleted 0 1266528889 + or +\change_unchanged + VIRTIO_BLK_S_IOERR +\change_inserted 0 1266529171 + for host or guest error or VIRTIO_BLK_S_UNSUPP for a request unsupported + by host: +\change_deleted 0 1266471769 +. +\change_inserted 0 1266471782 + +\begin_inset listings +inline false +status open + +\begin_layout Plain Layout + +\change_inserted 0 1266471782 + +#define VIRTIO_BLK_S_OK 0 +\end_layout + +\begin_layout Plain Layout + +\...

..._F_TOPOLOGY 10 /* Topology information is available */ +#define VIRTIO_BLK_F_STATS_VQ 11 /* Optional stats vq is available */ #define VIRTIO_BLK_ID_BYTES 20 /* ID string length */ @@ -119,4 +120,23 @@ struct virtio_scsi_inhdr { #define VIRTIO_BLK_S_OK 0 #define VIRTIO_BLK_S_IOERR 1 #define VIRTIO_BLK_S_UNSUPP 2 + +#define VIRTIO_BLK_S_READ_IO 0 +#define VIRTIO_BLK_S_READ_MERGES 1 +#define VIRTIO_BLK_S_READ_SECTORS 2 +#define VIRTIO_BLK_S_READ_TICKS 3 +#define VIRTIO_BLK_S_WRITE_IO 4 +#define VIRTIO_BLK_S_WRITE_MERGES 5 +#define VIRTIO_BLK_S_WRITE_SECTORS 6 +#define VIRTIO_BLK_S_WRITE_TICKS 7 +#define...

..._F_TOPOLOGY 10 /* Topology information is available */ +#define VIRTIO_BLK_F_STATS_VQ 11 /* Optional stats vq is available */ #define VIRTIO_BLK_ID_BYTES 20 /* ID string length */ @@ -119,4 +120,23 @@ struct virtio_scsi_inhdr { #define VIRTIO_BLK_S_OK 0 #define VIRTIO_BLK_S_IOERR 1 #define VIRTIO_BLK_S_UNSUPP 2 + +#define VIRTIO_BLK_S_READ_IO 0 +#define VIRTIO_BLK_S_READ_MERGES 1 +#define VIRTIO_BLK_S_READ_SECTORS 2 +#define VIRTIO_BLK_S_READ_TICKS 3 +#define VIRTIO_BLK_S_WRITE_IO 4 +#define VIRTIO_BLK_S_WRITE_MERGES 5 +#define VIRTIO_BLK_S_WRITE_SECTORS 6 +#define VIRTIO_BLK_S_WRITE_TICKS 7 +#define...

This patchset implements bio-based IO path for virito-blk to improve performance. Fio test shows bio-based IO path gives the following performance improvement: 1) Ramdisk device With bio-based IO path, sequential read/write, random read/write IOPS boost : 28%, 24%, 21%, 16% Latency improvement: 32%, 17%, 21%, 16% 2) Fusion IO device With bio-based IO path, sequential

This patchset implements bio-based IO path for virito-blk to improve performance. Fio test shows bio-based IO path gives the following performance improvement: 1) Ramdisk device With bio-based IO path, sequential read/write, random read/write IOPS boost : 28%, 24%, 21%, 16% Latency improvement: 32%, 17%, 21%, 16% 2) Fusion IO device With bio-based IO path, sequential

Hi, all This version reworked on REQ_FLUSH and REQ_FUA support as suggested by Christoph and dropped the block core bits since Jens has picked them up. Fio test shows bio-based IO path gives the following performance improvement: 1) Ramdisk device With bio-based IO path, sequential read/write, random read/write IOPS boost : 28%, 24%, 21%, 16% Latency improvement: 32%,

Hi, all This version reworked on REQ_FLUSH and REQ_FUA support as suggested by Christoph and dropped the block core bits since Jens has picked them up. Fio test shows bio-based IO path gives the following performance improvement: 1) Ramdisk device With bio-based IO path, sequential read/write, random read/write IOPS boost : 28%, 24%, 21%, 16% Latency improvement: 32%,

Hi, all Changes in v7: - Using vbr->flags to trace request type - Dropped unnecessary struct virtio_blk *vblk parameter - Reuse struct virtblk_req in bio done function - Added performance data on normal SATA device and the reason why make it optional Fio test shows bio-based IO path gives the following performance improvement: 1) Ramdisk device With bio-based IO path, sequential

Hi, all Changes in v7: - Using vbr->flags to trace request type - Dropped unnecessary struct virtio_blk *vblk parameter - Reuse struct virtblk_req in bio done function - Added performance data on normal SATA device and the reason why make it optional Fio test shows bio-based IO path gives the following performance improvement: 1) Ramdisk device With bio-based IO path, sequential