#include <sys/time.h>
#include <sys/types.h>
#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <fcntl.h>
#include <syslog.h>
#include <unistd.h>
#include "config.h"
#include "lfs.h"
-#define MY_NAME "nbd-tester-client"
-#include "cliserv.h"
-
#include <netinet/in.h>
#include <glib.h>
+#define MY_NAME "nbd-tester-client"
+#include "cliserv.h"
+
static gchar errstr[1024];
const static int errstr_len=1024;
static uint64_t size;
+static gchar * transactionlog = "nbd-tester-client.tr";
+
typedef enum {
CONNECTION_TYPE_NONE,
CONNECTION_TYPE_CONNECT,
CONNECTION_CLOSE_FAST,
} CLOSE_TYPE;
+struct reqcontext {
+ uint64_t seq;
+ char orighandle[8];
+ struct nbd_request req;
+ struct reqcontext * next;
+ struct reqcontext * prev;
+};
+
+struct rclist {
+ struct reqcontext * head;
+ struct reqcontext * tail;
+ int numitems;
+};
+
+struct chunk {
+ char * buffer;
+ char * readptr;
+ char * writeptr;
+ uint64_t space;
+ uint64_t length;
+ struct chunk * next;
+ struct chunk * prev;
+};
+
+struct chunklist {
+ struct chunk * head;
+ struct chunk * tail;
+ int numitems;
+};
+
+void rclist_unlink(struct rclist * l, struct reqcontext * p) {
+ if (p && l) {
+ struct reqcontext * prev = p->prev;
+ struct reqcontext * next = p->next;
+
+ /* Fix link to previous */
+ if (prev)
+ prev->next = next;
+ else
+ l->head = next;
+
+ if (next)
+ next->prev = prev;
+ else
+ l->tail = prev;
+
+ p->prev = NULL;
+ p->next = NULL;
+ l->numitems--;
+ }
+}
+
+/* Add a new list item to the tail */
+void rclist_addtail(struct rclist * l, struct reqcontext * p) {
+ if (!p || !l)
+ return;
+ if (l->tail) {
+ if (l->tail->next)
+ g_warning("addtail found list tail has a next pointer");
+ l->tail->next = p;
+ p->next = NULL;
+ p->prev = l->tail;
+ l->tail = p;
+ } else {
+ if (l->head)
+ g_warning("addtail found no list tail but a list head");
+ l->head = p;
+ l->tail = p;
+ p->prev = NULL;
+ p->next = NULL;
+ }
+ l->numitems++;
+}
+
+void chunklist_unlink(struct chunklist * l, struct chunk * p) {
+ if (p && l) {
+ struct chunk * prev = p->prev;
+ struct chunk * next = p->next;
+
+ /* Fix link to previous */
+ if (prev)
+ prev->next = next;
+ else
+ l->head = next;
+
+ if (next)
+ next->prev = prev;
+ else
+ l->tail = prev;
+
+ p->prev = NULL;
+ p->next = NULL;
+ l->numitems--;
+ }
+}
+
+/* Add a new list item to the tail */
+void chunklist_addtail(struct chunklist * l, struct chunk * p) {
+ if (!p || !l)
+ return;
+ if (l->tail) {
+ if (l->tail->next)
+ g_warning("addtail found list tail has a next pointer");
+ l->tail->next = p;
+ p->next = NULL;
+ p->prev = l->tail;
+ l->tail = p;
+ } else {
+ if (l->head)
+ g_warning("addtail found no list tail but a list head");
+ l->head = p;
+ l->tail = p;
+ p->prev = NULL;
+ p->next = NULL;
+ }
+ l->numitems++;
+}
+
+/* Add some new bytes to a chunklist */
+void addbuffer(struct chunklist * l, void * data, uint64_t len) {
+ void * buf;
+ uint64_t size = 64*1024;
+ struct chunk * pchunk;
+
+ while (len>0)
+ {
+ /* First see if there is a current chunk, and if it has space */
+ if (l->tail && l->tail->space) {
+ uint64_t towrite = len;
+ if (towrite > l->tail->space)
+ towrite = l->tail->space;
+ memcpy(l->tail->writeptr, data, towrite);
+ l->tail->length += towrite;
+ l->tail->space -= towrite;
+ l->tail->writeptr += towrite;
+ len -= towrite;
+ data += towrite;
+ }
+
+ if (len>0) {
+ /* We still need to write more, so prepare a new chunk */
+ if ((NULL == (buf = malloc(size))) || (NULL == (pchunk = calloc(1, sizeof(struct chunk))))) {
+ g_critical("Out of memory");
+ exit (1);
+ }
+
+ pchunk->buffer = buf;
+ pchunk->readptr = buf;
+ pchunk->writeptr = buf;
+ pchunk->space = size;
+ chunklist_addtail(l, pchunk);
+ }
+ }
+
+}
+
+/* returns 0 on success, -1 on failure */
+int writebuffer(int fd, struct chunklist * l) {
+
+ struct chunk * pchunk = NULL;
+ int res;
+ if (!l)
+ return 0;
+
+ while (!pchunk)
+ {
+ pchunk = l->head;
+ if (!pchunk)
+ return 0;
+ if (!(pchunk->length) || !(pchunk->readptr)) {
+ chunklist_unlink(l, pchunk);
+ free(pchunk->buffer);
+ free(pchunk);
+ pchunk = NULL;
+ }
+ }
+
+ /* OK we have a chunk with some data in */
+ res = write(fd, pchunk->readptr, pchunk->length);
+ if (res==0)
+ errno = EAGAIN;
+ if (res<=0)
+ return -1;
+ pchunk->length -= res;
+ pchunk->readptr += res;
+ if (!pchunk->length) {
+ chunklist_unlink(l, pchunk);
+ free(pchunk->buffer);
+ free(pchunk);
+ }
+ return 0;
+}
+
+
+
#define TEST_WRITE (1<<0)
#define TEST_FLUSH (1<<1)
while(len>0) {
if((res=read(f, buf, len)) <=0) {
+ if (!res)
+ errno=EAGAIN;
snprintf(errstr, errstr_len, "Read failed: %s", strerror(errno));
return -1;
}
while(len>0) {
if((res=write(f, buf, len)) <=0) {
+ if (!res)
+ errno=EAGAIN;
snprintf(errstr, errstr_len, "Write failed: %s", strerror(errno));
return -1;
}
READ_ALL_ERRCHK(sock, &flags, sizeof(uint16_t), err_open, "Could not read flags: %s", strerror(errno));
flags = ntohs(flags);
*serverflags = flags;
- g_warning("Server flags are: %08x", flags);
READ_ALL_ERRCHK(sock, buf, 124, err_open, "Could not read reserved zeroes: %s", strerror(errno));
goto end;
err_open:
int retval=0;
struct nbd_request req;
struct nbd_reply rep;
- int request=0;
int i=0;
int serverflags = 0;
- pid_t mypid = getpid();
+ pid_t G_GNUC_UNUSED mypid = getpid();
char buf[((1024*1024)+sizeof(struct nbd_request)/2)<<1];
bool got_err;
int throughput_test(gchar* hostname, int port, char* name, int sock,
char sock_is_open, char close_sock, int testflags) {
long long int i;
- char buf[1024];
char writebuf[1024];
struct nbd_request req;
int requests=0;
char speedchar[2] = { '\0', '\0' };
int retval=0;
int serverflags = 0;
- size_t tmp;
signed int do_write=TRUE;
pid_t mypid = getpid();
return retval;
}
+/*
+ * fill 512 byte buffer 'buf' with a hashed selection of interesting data based
+ * only on handle and blknum. The first word is blknum, and the second handle, for ease
+ * of understanding. Things with handle 0 are blank.
+ */
+static inline void makebuf(char *buf, uint64_t seq, uint64_t blknum) {
+ uint64_t x = ((uint64_t)blknum) ^ (seq << 32) ^ (seq >> 32);
+ uint64_t* p = (uint64_t*)buf;
+ int i;
+ if (!seq) {
+ bzero(buf, 512);
+ return;
+ }
+ for (i = 0; i<512/sizeof(uint64_t); i++) {
+ int s;
+ *(p++) = x;
+ x+=0xFEEDA1ECDEADBEEFULL+i+(((uint64_t)i)<<56);
+ s = x & 63;
+ x = x ^ (x<<s) ^ (x>>(64-s)) ^ 0xAA55AA55AA55AA55ULL ^ seq;
+ }
+}
+
+static inline int checkbuf(char *buf, uint64_t seq, uint64_t blknum) {
+ char cmp[512];
+ makebuf(cmp, seq, blknum);
+ return memcmp(cmp, buf, 512)?-1:0;
+}
+
+static inline void dumpcommand(char * text, uint32_t command)
+{
+#ifdef DEBUG_COMMANDS
+ command=ntohl(command);
+ char * ctext;
+ switch (command & NBD_CMD_MASK_COMMAND) {
+ case NBD_CMD_READ:
+ ctext="NBD_CMD_READ";
+ break;
+ case NBD_CMD_WRITE:
+ ctext="NBD_CMD_WRITE";
+ break;
+ case NBD_CMD_DISC:
+ ctext="NBD_CMD_DISC";
+ break;
+ case NBD_CMD_FLUSH:
+ ctext="NBD_CMD_FLUSH";
+ break;
+ default:
+ ctext="UNKNOWN";
+ break;
+ }
+ printf("%s: %s [%s] (0x%08x)\n",
+ text,
+ ctext,
+ (command & NBD_CMD_FLAG_FUA)?"FUA":"NONE",
+ command);
+#endif
+}
+
+/* return an unused handle */
+uint64_t getrandomhandle(GHashTable *phash) {
+ uint64_t handle = 0;
+ int i;
+ do {
+ /* RAND_MAX may be as low as 2^15 */
+ for (i= 1 ; i<=5; i++)
+ handle ^= random() ^ (handle << 15);
+ } while (g_hash_table_lookup(phash, &handle));
+ return handle;
+}
+
+int integrity_test(gchar* hostname, int port, char* name, int sock,
+ char sock_is_open, char close_sock, int testflags) {
+ struct nbd_reply rep;
+ fd_set rset;
+ fd_set wset;
+ struct timeval tv;
+ struct timeval start;
+ struct timeval stop;
+ double timespan;
+ double speed;
+ char speedchar[2] = { '\0', '\0' };
+ int retval=0;
+ int serverflags = 0;
+ pid_t G_GNUC_UNUSED mypid = getpid();
+ int blkhashfd = -1;
+ char *blkhashname=NULL;
+ uint32_t *blkhash = NULL;
+ int logfd=-1;
+ uint64_t seq=1;
+ uint64_t processed=0;
+ uint64_t printer=0;
+ uint64_t xfer=0;
+ int readtransactionfile = 1;
+ struct rclist txqueue={NULL, NULL, 0};
+ struct rclist inflight={NULL, NULL, 0};
+ struct chunklist txbuf={NULL, NULL, 0};
+
+ GHashTable *handlehash = g_hash_table_new(g_int64_hash, g_int64_equal);
+
+ size=0;
+ if(!sock_is_open) {
+ if((sock=setup_connection(hostname, port, name, CONNECTION_TYPE_FULL, &serverflags))<0) {
+ g_warning("Could not open socket: %s", errstr);
+ retval=-1;
+ goto err;
+ }
+ }
+
+ if ((serverflags & (NBD_FLAG_SEND_FLUSH | NBD_FLAG_SEND_FUA))
+ != (NBD_FLAG_SEND_FLUSH | NBD_FLAG_SEND_FUA))
+ g_warning("Server flags do not support FLUSH and FUA - these may error");
+
+#ifdef HAVE_MKSTEMP
+ blkhashname=strdup("/tmp/blkarray-XXXXXX");
+ if (!blkhashname || (-1 == (blkhashfd = mkstemp(blkhashname)))) {
+ g_warning("Could not open temp file: %s", strerror(errno));
+ retval=-1;
+ goto err;
+ }
+#else
+ /* use tmpnam here to avoid further feature test nightmare */
+ if (-1 == (blkhashfd = open(blkhashname=strdup(tmpnam(NULL)),
+ O_CREAT | O_RDWR,
+ S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH))) {
+ g_warning("Could not open temp file: %s", strerror(errno));
+ retval=-1;
+ goto err;
+ }
+#endif
+ /* Ensure space freed if we die */
+ if (-1 == unlink(blkhashname)) {
+ g_warning("Could not unlink temp file: %s", strerror(errno));
+ retval=-1;
+ goto err;
+ }
+
+ if (-1 == lseek(blkhashfd, (off_t)((size>>9)<<2), SEEK_SET)) {
+ g_warning("Could not llseek temp file: %s", strerror(errno));
+ retval=-1;
+ goto err;
+ }
+
+ if (-1 == write(blkhashfd, "\0", 1)) {
+ g_warning("Could not write temp file: %s", strerror(errno));
+ retval=-1;
+ goto err;
+ }
+
+ if (NULL == (blkhash = mmap(NULL,
+ (size>>9)<<2,
+ PROT_READ | PROT_WRITE,
+ MAP_SHARED,
+ blkhashfd,
+ 0))) {
+ g_warning("Could not mmap temp file: %s", strerror(errno));
+ retval=-1;
+ goto err;
+ }
+
+ if (-1 == (logfd = open(transactionlog, O_RDONLY)))
+ {
+ g_warning("Could open log file: %s", strerror(errno));
+ retval=-1;
+ goto err;
+ }
+
+ if(gettimeofday(&start, NULL)<0) {
+ retval=-1;
+ snprintf(errstr, errstr_len, "Could not measure start time: %s", strerror(errno));
+ goto err_open;
+ }
+
+ while (readtransactionfile || txqueue.numitems || txbuf.numitems || inflight.numitems) {
+ int ret;
+
+ uint32_t magic;
+ uint32_t command;
+ uint64_t from;
+ uint32_t len;
+ struct reqcontext * prc;
+
+ *errstr=0;
+
+ FD_ZERO(&wset);
+ FD_ZERO(&rset);
+ if (readtransactionfile)
+ FD_SET(logfd, &rset);
+ if (txqueue.numitems || txbuf.numitems)
+ FD_SET(sock, &wset);
+ if (inflight.numitems)
+ FD_SET(sock, &rset);
+ tv.tv_sec=5;
+ tv.tv_usec=0;
+ ret = select(1+((sock>logfd)?sock:logfd), &rset, &wset, NULL, &tv);
+ if (ret == 0) {
+ retval=-1;
+ snprintf(errstr, errstr_len, "Timeout reading from socket");
+ goto err_open;
+ } else if (ret<0) {
+ g_warning("Could not mmap temp file: %s", errstr);
+ retval=-1;
+ goto err;
+ }
+ /* We know we've got at least one thing to do here then */
+
+ /* Get a command from the transaction log */
+ if (FD_ISSET(logfd, &rset)) {
+
+ /* Read a request or reply from the transaction file */
+ READ_ALL_ERRCHK(logfd,
+ &magic,
+ sizeof(magic),
+ err_open,
+ "Could not read transaction log: %s",
+ strerror(errno));
+ magic = ntohl(magic);
+ switch (magic) {
+ case NBD_REQUEST_MAGIC:
+ if (NULL == (prc = calloc(1, sizeof(struct reqcontext)))) {
+ retval=-1;
+ snprintf(errstr, errstr_len, "Could not allocate request");
+ goto err_open;
+ }
+ READ_ALL_ERRCHK(logfd,
+ sizeof(magic)+(char *)&(prc->req),
+ sizeof(struct nbd_request)-sizeof(magic),
+ err_open,
+ "Could not read transaction log: %s",
+ strerror(errno));
+ prc->req.magic = htonl(NBD_REQUEST_MAGIC);
+ memcpy(prc->orighandle, prc->req.handle, 8);
+ prc->seq=seq++;
+ if ((ntohl(prc->req.type) & NBD_CMD_MASK_COMMAND) == NBD_CMD_DISC) {
+ /* no more to read; don't enqueue as no reply
+ * we will disconnect manually at the end
+ */
+ readtransactionfile = 0;
+ free (prc);
+ } else {
+ dumpcommand("Enqueuing command", prc->req.type);
+ rclist_addtail(&txqueue, prc);
+ }
+ prc = NULL;
+ break;
+ case NBD_REPLY_MAGIC:
+ READ_ALL_ERRCHK(logfd,
+ sizeof(magic)+(char *)(&rep),
+ sizeof(struct nbd_reply)-sizeof(magic),
+ err_open,
+ "Could not read transaction log: %s",
+ strerror(errno));
+
+ if (rep.error) {
+ retval=-1;
+ snprintf(errstr, errstr_len, "Transaction log file contained errored transaction");
+ goto err_open;
+ }
+
+ /* We do not need to consume data on a read reply as there is
+ * none in the log */
+ break;
+ default:
+ retval=-1;
+ snprintf(errstr, errstr_len, "Could not measure start time: %08x", magic);
+ goto err_open;
+ }
+ }
+
+ /* See if we have a write we can do */
+ if (FD_ISSET(sock, &wset))
+ {
+ if (!(txqueue.head) && !(txbuf.head))
+ g_warning("Socket write FD set but we shouldn't have been interested");
+
+ /* If there is no buffered data, generate some */
+ if (!(txbuf.head) && (NULL != (prc = txqueue.head)))
+ {
+ rclist_unlink(&txqueue, prc);
+ rclist_addtail(&inflight, prc);
+
+ if (ntohl(prc->req.magic) != NBD_REQUEST_MAGIC) {
+ retval=-1;
+ g_warning("Asked to write a reply without a magic number");
+ goto err_open;
+ }
+
+ dumpcommand("Sending command", prc->req.type);
+ command = ntohl(prc->req.type);
+ from = ntohll(prc->req.from);
+ len = ntohl(prc->req.len);
+ /* we rewrite the handle as they otherwise may not be unique */
+ *((uint64_t*)(prc->req.handle))=getrandomhandle(handlehash);
+ g_hash_table_insert(handlehash, prc->req.handle, prc);
+ addbuffer(&txbuf, &(prc->req), sizeof(struct nbd_request));
+ switch (command & NBD_CMD_MASK_COMMAND) {
+ case NBD_CMD_WRITE:
+ xfer+=len;
+ while (len > 0) {
+ uint64_t blknum = from>>9;
+ char dbuf[512];
+ if (from>=size) {
+ snprintf(errstr, errstr_len, "offset %llx beyond size %llx",
+ (long long int) from, (long long int)size);
+ goto err_open;
+ }
+ /* work out what we should be writing */
+ makebuf(dbuf, prc->seq, blknum);
+ addbuffer(&txbuf, dbuf, 512);
+ from += 512;
+ len -= 512;
+ }
+ break;
+ case NBD_CMD_READ:
+ xfer+=len;
+ break;
+ case NBD_CMD_DISC:
+ case NBD_CMD_FLUSH:
+ break;
+ default:
+ retval=-1;
+ snprintf(errstr, errstr_len, "Incomprehensible command: %08x", command);
+ goto err_open;
+ break;
+ }
+
+ prc = NULL;
+ }
+
+ /* there should be some now */
+ if (writebuffer(sock, &txbuf)<0) {
+ retval=-1;
+ snprintf(errstr, errstr_len, "Failed to write to socket buffer: %s", strerror(errno));
+ goto err_open;
+ }
+
+ }
+
+ /* See if there is a reply to be processed from the socket */
+ if(FD_ISSET(sock, &rset)) {
+ /* Okay, there's something ready for
+ * reading here */
+
+ READ_ALL_ERRCHK(sock,
+ &rep,
+ sizeof(struct nbd_reply),
+ err_open,
+ "Could not read from server socket: %s",
+ strerror(errno));
+
+ if (rep.magic != htonl(NBD_REPLY_MAGIC)) {
+ retval=-1;
+ snprintf(errstr, errstr_len, "Bad magic from server");
+ goto err_open;
+ }
+
+ if (rep.error) {
+ retval=-1;
+ snprintf(errstr, errstr_len, "Server errored a transaction");
+ goto err_open;
+ }
+
+ prc = g_hash_table_lookup(handlehash, rep.handle);
+ if (!prc) {
+ retval=-1;
+ snprintf(errstr, errstr_len, "Unrecognised handle in reply: 0x%llX", *(long long unsigned int*)(rep.handle));
+ goto err_open;
+ }
+ if (!g_hash_table_remove(handlehash, rep.handle)) {
+ retval=-1;
+ snprintf(errstr, errstr_len, "Could not remove handle from hash: 0x%llX", *(long long unsigned int*)(rep.handle));
+ goto err_open;
+ }
+
+ if (prc->req.magic != htonl(NBD_REQUEST_MAGIC)) {
+ retval=-1;
+ snprintf(errstr, errstr_len, "Bad magic in inflight data: %08x", prc->req.magic);
+ goto err_open;
+ }
+
+ dumpcommand("Processing reply to command", prc->req.type);
+ command = ntohl(prc->req.type);
+ from = ntohll(prc->req.from);
+ len = ntohl(prc->req.len);
+
+ switch (command & NBD_CMD_MASK_COMMAND) {
+ case NBD_CMD_READ:
+ while (len > 0) {
+ uint64_t blknum = from>>9;
+ char dbuf[512];
+ if (from>=size) {
+ snprintf(errstr, errstr_len, "offset %llx beyond size %llx",
+ (long long int) from, (long long int)size);
+ goto err_open;
+ }
+ READ_ALL_ERRCHK(sock,
+ dbuf,
+ 512,
+ err_open,
+ "Could not read data: %s",
+ strerror(errno));
+ /* work out what we was written */
+ if (checkbuf(dbuf, blkhash[blknum], blknum))
+ {
+ retval=-1;
+ snprintf(errstr, errstr_len, "Bad reply data: seq %08x", blkhash[blknum]);
+ goto err_open;
+
+ }
+ from += 512;
+ len -= 512;
+ }
+ break;
+ case NBD_CMD_WRITE:
+ /* subsequent reads should get data with this seq*/
+ while (len > 0) {
+ uint64_t blknum = from>>9;
+ blkhash[blknum]=(uint32_t)(prc->seq);
+ from += 512;
+ len -= 512;
+ }
+ break;
+ default:
+ break;
+ }
+
+ processed++;
+ rclist_unlink(&inflight, prc);
+ prc->req.magic=0; /* so a duplicate reply is detected */
+ free(prc);
+ }
+
+ if (!(printer++ % 10000) || !(readtransactionfile || txqueue.numitems || inflight.numitems) )
+ printf("%d: Seq %08lld Queued: %08d Inflight: %08d Done: %08lld\n",
+ (int)mypid,
+ (long long int) seq,
+ txqueue.numitems,
+ inflight.numitems,
+ (long long int) processed);
+
+ }
+
+ if (gettimeofday(&stop, NULL)<0) {
+ retval=-1;
+ snprintf(errstr, errstr_len, "Could not measure end time: %s", strerror(errno));
+ goto err_open;
+ }
+ timespan=timeval_diff_to_double(&stop, &start);
+ speed=xfer/timespan;
+ if(speed>1024) {
+ speed=speed/1024.0;
+ speedchar[0]='K';
+ }
+ if(speed>1024) {
+ speed=speed/1024.0;
+ speedchar[0]='M';
+ }
+ if(speed>1024) {
+ speed=speed/1024.0;
+ speedchar[0]='G';
+ }
+ g_message("%d: Integrity %s test complete. Took %.3f seconds to complete, %.3f%sib/s", (int)getpid(), (testflags & TEST_WRITE)?"write":"read", timespan, speed, speedchar);
+
+err_open:
+ if(close_sock) {
+ close_connection(sock, CONNECTION_CLOSE_PROPERLY);
+ }
+err:
+ if (size && blkhash)
+ munmap(blkhash, (size>>9)<<2);
+
+ if (blkhashfd != -1)
+ close (blkhashfd);
+
+ if (logfd != -1)
+ close (logfd);
+
+ if (blkhashname)
+ free(blkhashname);
+
+ if (*errstr)
+ g_warning("%s",errstr);
+
+ g_hash_table_destroy(handlehash);
+
+ return retval;
+}
+
typedef int (*testfunc)(gchar*, int, char*, int, char, char, int);
int main(int argc, char**argv) {
exit(EXIT_FAILURE);
}
logging();
- while((c=getopt(argc, argv, "-N:owf"))>=0) {
+ while((c=getopt(argc, argv, "-N:t:owfi"))>=0) {
switch(c) {
case 1:
switch(nonopt) {
p = 10809;
want_port = false;
break;
+ case 't':
+ transactionlog=g_strdup(optarg);
+ break;
case 'o':
test=oversize_test;
break;
case 'f':
testflags|=TEST_FLUSH;
break;
+ case 'i':
+ test=integrity_test;
+ break;
}
}