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perf2

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This commit is contained in:
Lei Xue
2017-08-02 19:01:41 +08:00
parent 4ae643e9f8
commit fcb96b323d
6 changed files with 91 additions and 101 deletions
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25
pkg/scsi/backingstore.go
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@@ -54,16 +54,15 @@ func NewBackingStore(name string) (api.BackingStore, error) {
func bsPerformCommand(bs api.BackingStore, cmd *api.SCSICommand) (err error, key byte, asc SCSISubError) {
var (
scb = cmd.SCB
offset = cmd.Offset
opcode = api.SCSICommandType(scb[0])
lu = cmd.Device
length int
doVerify bool = false
doWrite bool = false
wbuf []byte
tl int64 = int64(cmd.TL)
rbuf []byte = pool.NewBuffer(int(tl))
scb = cmd.SCB
offset = cmd.Offset
opcode = api.SCSICommandType(scb[0])
lu = cmd.Device
length int
doVerify bool = false
doWrite bool = false
rbuf, wbuf []byte
tl int64 = int64(cmd.TL)
)
key = HARDWARE_ERROR
asc = ASC_INTERNAL_TGT_FAILURE
@@ -105,6 +104,7 @@ func bsPerformCommand(bs api.BackingStore, cmd *api.SCSICommand) (err error, key
// TODO
break
case api.READ_6, api.READ_10, api.READ_12, api.READ_16:
rbuf = pool.NewBuffer(int(tl))
rbuf, err = bs.Read(int64(offset), tl)
if err != nil && err != io.EOF {
key = MEDIUM_ERROR
@@ -141,7 +141,6 @@ func bsPerformCommand(bs api.BackingStore, cmd *api.SCSICommand) (err error, key
}
write:
if doWrite {
// hack: wbuf = []byte("hello world!")
err = bs.Write(wbuf, int64(offset))
if err != nil {
log.Error(err)
@@ -176,6 +175,7 @@ write:
}
verify:
if doVerify {
rbuf = pool.NewBuffer(int(tl))
rbuf, err = bs.Read(int64(offset), tl)
if err != nil {
key = MEDIUM_ERROR
@@ -187,9 +187,6 @@ verify:
key = MISCOMPARE
asc = ASC_MISCOMPARE_DURING_VERIFY_OPERATION
goto sense
} else {
log.Warnf("%v", wbuf)
log.Warnf("%v", rbuf)
}
if scb[1]&0x10 != 0 {
bs.DataAdvise(int64(offset), int64(length), util.POSIX_FADV_WILLNEED)