Hi,
Sorry for the late reply,
but we tried upgrading to 2.8.1 a month or 2 ago, and i remember we had
a problem where the metadataserver(s) keep crashing.
I will give it another shot upgrading to 2.8.1, might be something i
missed the last time.
Thanks,
Mohamad
Phil Carns wrote:
> Hi,
>
> Thanks for the bug report, but it looks like this problem has already
> been fixed. I tried your test case on 2.8.1 and didn't see any problems:
>
> $ ~/writev
> wrote 145 bytes
>
> Are you able to upgrade to a newer version of PVFS?
>
> thanks,
> -Phil
>
> Mohamad Chaarawi wrote:
>> Hello,
>>
>> I have a problem when executing a simple problem with a writev over
>> pvfs2, where i can't include more than 1 entry for the iovec that i pass
>> to writev. Otherwise it gives an Invalid argument error for writev.
>> Im using pvfs-2.7.1.
>> 22 servers, 29 clients, 1 metadataserver
>>
>> If I execute with number of entries in iovec as 1, it works fine, the
>> problem is when im executing with more than that.
>> using pwrite works fine though.
>>
>> Simple program like:
>>
>> #include <stdio.h>
>> #include <sys/types.h>
>> #include <sys/stat.h>
>> #include <fcntl.h>
>> #include <string.h>
>> #include <sys/uio.h>
>>
>> int main(int argc, char** argv)
>> {
>> struct iovec iov[3];
>> ssize_t nr;
>> int fd, i;
>>
>> char *buf[] = {
>> "The term buccaneer comes from the word boucan.\n",
>> "A boucan is a wooden frame used for cooking meat.\n",
>> "Buccaneer is the West Indies name for a pirate.\n" };
>>
>> fd = open ("buccaneer.txt", O_WRONLY | O_CREAT | O_TRUNC);
>> if (fd == -1) {
>> perror ("open");
>> return 1;
>> }
>>
>> /* fill out three iovec structures */
>> for (i = 0; i < 3; i++) {
>> iov[i].iov_base = buf[i];
>> iov[i].iov_len = strlen (buf[i]);
>> }
>>
>> /* with a single call, write them all out */
>> nr = writev (fd, iov, 3);
>> if (nr == -1) {
>> perror ("writev");
>> return 1;
>> }
>> printf ("wrote %d bytes\n", nr);
>>
>> if (close (fd)) {
>> perror ("close");
>> return 1;
>> }
>>
>> return 0;
>> }
>>
>> _______________________________________________
>> Pvfs2-users mailing list
>> [email protected]
>> http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users
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