Client stuck 'waiting on max

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* Client stuck 'waiting on max_size'
       [not found] <726402583.133585.1323230432339.JavaMail.root@mail-01.cse.ucsc.edu>
@ 2011-12-07  4:02 ` Noah Watkins
  2011-12-07  4:49   ` Gregory Farnum
  2011-12-07  4:56   ` Sage Weil
  0 siblings, 2 replies; 6+ messages in thread
From: Noah Watkins @ 2011-12-07  4:02 UTC (permalink / raw)
  To: ceph-devel

I have a simple libcephfs client (code attached) that:

1) mounts ceph
2) opens/create a file
3) writes 1K

But gets stuck on the write. The client log repeats the following over and over. (c code for test appended).

Thanks,
Noah


2011-12-06 19:50:23.329501 7ff3a7023700 client.6154  cap mds.0 issued pAsLsXsFscr implemented pAsLsXsFscr revoking -
2011-12-06 19:50:37.330474 7ff3a7023700 client.6154 renew_caps()
2011-12-06 19:50:37.330536 7ff3a7023700 client.6154 renew_caps requesting from mds.0
2011-12-06 19:50:37.330549 7ff3a7023700 client.6154 renew_caps mds.0
2011-12-06 19:50:37.331304 7ff3a6021700 client.6154 handle_client_session client_session(renewcaps seq 4) v1
2011-12-06 19:50:37.331357 7ff3a9eb7760 client.6154 waiting on max_size, endoff 1024 max_size 0
2011-12-06 19:50:57.331975 7ff3a7023700 client.6154 renew_caps()
2011-12-06 19:50:57.332021 7ff3a7023700 client.6154 renew_caps requesting from mds.0
2011-12-06 19:50:57.332036 7ff3a7023700 client.6154 renew_caps mds.0
2011-12-06 19:50:57.332757 7ff3a6021700 client.6154 handle_client_session client_session(renewcaps seq 5) v1
2011-12-06 19:50:57.332809 7ff3a9eb7760 client.6154 waiting on max_size, endoff 1024 max_size 0
2011-12-06 19:51:17.333445 7ff3a7023700 client.6154 renew_caps()
2011-12-06 19:51:17.333492 7ff3a7023700 client.6154 renew_caps requesting from mds.0
2011-12-06 19:51:17.333507 7ff3a7023700 client.6154 renew_caps mds.0
2011-12-06 19:51:17.334220 7ff3a6021700 client.6154 handle_client_session client_session(renewcaps seq 6) v1
2011-12-06 19:51:17.334274 7ff3a9eb7760 client.6154 waiting on max_size, endoff 1024 max_size 0
2011-12-06 19:51:37.334880 7ff3a7023700 client.6154 renew_caps()
2011-12-06 19:51:37.334927 7ff3a7023700 client.6154 renew_caps requesting from mds.0
2011-12-06 19:51:37.334941 7ff3a7023700 client.6154 renew_caps mds.0
2011-12-06 19:51:37.335657 7ff3a6021700 client.6154 handle_client_session client_session(renewcaps seq 7) v1
2011-12-06 19:51:37.335707 7ff3a9eb7760 client.6154 waiting on max_size, endoff 1024 max_size 0
2011-12-06 19:51:57.336312 7ff3a7023700 client.6154 renew_caps()
2011-12-06 19:51:57.336356 7ff3a7023700 client.6154 renew_caps requesting from mds.0
2011-12-06 19:51:57.336370 7ff3a7023700 client.6154 renew_caps mds.0
2011-12-06 19:51:57.337057 7ff3a6021700 client.6154 handle_client_session client_session(renewcaps seq 8) v1
2011-12-06 19:51:57.337109 7ff3a9eb7760 client.6154 waiting on max_size, endoff 1024 max_size 0
2011-12-06 19:52:17.337745 7ff3a7023700 client.6154 renew_caps()
2011-12-06 19:52:17.337791 7ff3a7023700 client.6154 renew_caps requesting from mds.0
2011-12-06 19:52:17.337805 7ff3a7023700 client.6154 renew_caps mds.0
2011-12-06 19:52:17.338499 7ff3a6021700 client.6154 handle_client_session client_session(renewcaps seq 9) v1
2011-12-06 19:52:17.338550 7ff3a9eb7760 client.6154 waiting on max_size, endoff 1024 max_size 0
2011-12-06 19:52:37.339187 7ff3a7023700 client.6154 renew_caps()
2011-12-06 19:52:37.339236 7ff3a7023700 client.6154 renew_caps requesting from mds.0
2011-12-06 19:52:37.339250 7ff3a7023700 client.6154 renew_caps mds.0
2011-12-06 19:52:37.339968 7ff3a6021700 client.6154 handle_client_session client_session(renewcaps seq 10) v1
2011-12-06 19:52:37.340015 7ff3a9eb7760 client.6154 waiting on max_size, endoff 1024 max_size 0


=============

#define _FILE_OFFSET_BITS 64
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <cephfs/libcephfs.h>

#define MB64 (1<<26)

int main(int argc, const char **argv)
{
	struct ceph_mount_info *cmount;
	int ret, fd, len;
	char buf[1024];

	if (argc < 3) {
		fprintf(stderr, "usage: ./%s <conf> <file>\n", argv[0]);
		exit(1);
	}

	ret = ceph_create(&cmount, NULL);
	if (ret) {
		fprintf(stderr, "ceph_create=%d\n", ret);
		exit(1);
	}

	ret = ceph_conf_read_file(cmount, argv[1]);
	if (ret) {
		fprintf(stderr, "ceph_conf_read_file=%d\n", ret);
		exit(1);
	}

	ret = ceph_conf_parse_argv(cmount, argc, argv);
	if (ret) {
		fprintf(stderr, "ceph_conf_parse_argv=%d\n", ret);
		exit(1);
	}

	ret = ceph_mount(cmount, NULL);
	if (ret) {
		fprintf(stderr, "ceph_mount=%d\n", ret);
		exit(1);
	}

	ret = ceph_chdir(cmount, "/");
	if (ret) {
		fprintf(stderr, "ceph_chdir=%d\n", ret);
		exit(1);
	}

	fd = ceph_open(cmount, argv[2], O_CREAT|O_TRUNC, 0777);	
	if (fd < 0) {
		fprintf(stderr, "ceph_open=%d\n", fd);
		exit(1);
	}

	memset(buf, 'a', sizeof(buf));

	len = ceph_write(cmount, fd, buf, sizeof(buf), 0);

	fprintf(stdout, "wrote %d bytes\n", len);

	ceph_shutdown(cmount);

	return 0;
}

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: Client stuck 'waiting on max_size'
  2011-12-07  4:02 ` Client stuck 'waiting on max_size' Noah Watkins
@ 2011-12-07  4:49   ` Gregory Farnum
  2011-12-07  5:07     ` Noah Watkins
  2011-12-07  4:56   ` Sage Weil
  1 sibling, 1 reply; 6+ messages in thread
From: Gregory Farnum @ 2011-12-07  4:49 UTC (permalink / raw)
  To: Noah Watkins; +Cc: ceph-devel

The client is waiting for the MDS to give it permission to make the
file larger. I think this data comes back in a caps message, but it
probably got stuck on the MDS for some reason. Try grepping through
the MDS and client logs for max_size and see if there's something
obvious (or send it our way).

On Tue, Dec 6, 2011 at 8:02 PM, Noah Watkins <jayhawk@soe.ucsc.edu> wrote:
> I have a simple libcephfs client (code attached) that:
>
> 1) mounts ceph
> 2) opens/create a file
> 3) writes 1K
>
> But gets stuck on the write. The client log repeats the following over and over. (c code for test appended).
>
> Thanks,
> Noah
>
>
> 2011-12-06 19:50:23.329501 7ff3a7023700 client.6154  cap mds.0 issued pAsLsXsFscr implemented pAsLsXsFscr revoking -
> 2011-12-06 19:50:37.330474 7ff3a7023700 client.6154 renew_caps()
> 2011-12-06 19:50:37.330536 7ff3a7023700 client.6154 renew_caps requesting from mds.0
> 2011-12-06 19:50:37.330549 7ff3a7023700 client.6154 renew_caps mds.0
> 2011-12-06 19:50:37.331304 7ff3a6021700 client.6154 handle_client_session client_session(renewcaps seq 4) v1
> 2011-12-06 19:50:37.331357 7ff3a9eb7760 client.6154 waiting on max_size, endoff 1024 max_size 0
> 2011-12-06 19:50:57.331975 7ff3a7023700 client.6154 renew_caps()
> 2011-12-06 19:50:57.332021 7ff3a7023700 client.6154 renew_caps requesting from mds.0
> 2011-12-06 19:50:57.332036 7ff3a7023700 client.6154 renew_caps mds.0
> 2011-12-06 19:50:57.332757 7ff3a6021700 client.6154 handle_client_session client_session(renewcaps seq 5) v1
> 2011-12-06 19:50:57.332809 7ff3a9eb7760 client.6154 waiting on max_size, endoff 1024 max_size 0
> 2011-12-06 19:51:17.333445 7ff3a7023700 client.6154 renew_caps()
> 2011-12-06 19:51:17.333492 7ff3a7023700 client.6154 renew_caps requesting from mds.0
> 2011-12-06 19:51:17.333507 7ff3a7023700 client.6154 renew_caps mds.0
> 2011-12-06 19:51:17.334220 7ff3a6021700 client.6154 handle_client_session client_session(renewcaps seq 6) v1
> 2011-12-06 19:51:17.334274 7ff3a9eb7760 client.6154 waiting on max_size, endoff 1024 max_size 0
> 2011-12-06 19:51:37.334880 7ff3a7023700 client.6154 renew_caps()
> 2011-12-06 19:51:37.334927 7ff3a7023700 client.6154 renew_caps requesting from mds.0
> 2011-12-06 19:51:37.334941 7ff3a7023700 client.6154 renew_caps mds.0
> 2011-12-06 19:51:37.335657 7ff3a6021700 client.6154 handle_client_session client_session(renewcaps seq 7) v1
> 2011-12-06 19:51:37.335707 7ff3a9eb7760 client.6154 waiting on max_size, endoff 1024 max_size 0
> 2011-12-06 19:51:57.336312 7ff3a7023700 client.6154 renew_caps()
> 2011-12-06 19:51:57.336356 7ff3a7023700 client.6154 renew_caps requesting from mds.0
> 2011-12-06 19:51:57.336370 7ff3a7023700 client.6154 renew_caps mds.0
> 2011-12-06 19:51:57.337057 7ff3a6021700 client.6154 handle_client_session client_session(renewcaps seq 8) v1
> 2011-12-06 19:51:57.337109 7ff3a9eb7760 client.6154 waiting on max_size, endoff 1024 max_size 0
> 2011-12-06 19:52:17.337745 7ff3a7023700 client.6154 renew_caps()
> 2011-12-06 19:52:17.337791 7ff3a7023700 client.6154 renew_caps requesting from mds.0
> 2011-12-06 19:52:17.337805 7ff3a7023700 client.6154 renew_caps mds.0
> 2011-12-06 19:52:17.338499 7ff3a6021700 client.6154 handle_client_session client_session(renewcaps seq 9) v1
> 2011-12-06 19:52:17.338550 7ff3a9eb7760 client.6154 waiting on max_size, endoff 1024 max_size 0
> 2011-12-06 19:52:37.339187 7ff3a7023700 client.6154 renew_caps()
> 2011-12-06 19:52:37.339236 7ff3a7023700 client.6154 renew_caps requesting from mds.0
> 2011-12-06 19:52:37.339250 7ff3a7023700 client.6154 renew_caps mds.0
> 2011-12-06 19:52:37.339968 7ff3a6021700 client.6154 handle_client_session client_session(renewcaps seq 10) v1
> 2011-12-06 19:52:37.340015 7ff3a9eb7760 client.6154 waiting on max_size, endoff 1024 max_size 0
>
>
> =============
>
> #define _FILE_OFFSET_BITS 64
> #include <sys/types.h>
> #include <sys/stat.h>
> #include <fcntl.h>
> #include <stdio.h>
> #include <stdlib.h>
> #include <string.h>
> #include <cephfs/libcephfs.h>
>
> #define MB64 (1<<26)
>
> int main(int argc, const char **argv)
> {
>        struct ceph_mount_info *cmount;
>        int ret, fd, len;
>        char buf[1024];
>
>        if (argc < 3) {
>                fprintf(stderr, "usage: ./%s <conf> <file>\n", argv[0]);
>                exit(1);
>        }
>
>        ret = ceph_create(&cmount, NULL);
>        if (ret) {
>                fprintf(stderr, "ceph_create=%d\n", ret);
>                exit(1);
>        }
>
>        ret = ceph_conf_read_file(cmount, argv[1]);
>        if (ret) {
>                fprintf(stderr, "ceph_conf_read_file=%d\n", ret);
>                exit(1);
>        }
>
>        ret = ceph_conf_parse_argv(cmount, argc, argv);
>        if (ret) {
>                fprintf(stderr, "ceph_conf_parse_argv=%d\n", ret);
>                exit(1);
>        }
>
>        ret = ceph_mount(cmount, NULL);
>        if (ret) {
>                fprintf(stderr, "ceph_mount=%d\n", ret);
>                exit(1);
>        }
>
>        ret = ceph_chdir(cmount, "/");
>        if (ret) {
>                fprintf(stderr, "ceph_chdir=%d\n", ret);
>                exit(1);
>        }
>
>        fd = ceph_open(cmount, argv[2], O_CREAT|O_TRUNC, 0777);
>        if (fd < 0) {
>                fprintf(stderr, "ceph_open=%d\n", fd);
>                exit(1);
>        }
>
>        memset(buf, 'a', sizeof(buf));
>
>        len = ceph_write(cmount, fd, buf, sizeof(buf), 0);
>
>        fprintf(stdout, "wrote %d bytes\n", len);
>
>        ceph_shutdown(cmount);
>
>        return 0;
> }
> --
> To unsubscribe from this list: send the line "unsubscribe ceph-devel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
--
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^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: Client stuck 'waiting on max_size'
  2011-12-07  4:49   ` Gregory Farnum
@ 2011-12-07  5:07     ` Noah Watkins
  2011-12-07  5:45       ` Gregory Farnum
  0 siblings, 1 reply; 6+ messages in thread
From: Noah Watkins @ 2011-12-07  5:07 UTC (permalink / raw)
  To: Gregory Farnum; +Cc: Noah Watkins, ceph-devel

On 12/6/11 8:49 PM, Gregory Farnum wrote:
> The client is waiting for the MDS to give it permission to make the
> file larger. I think this data comes back in a caps message, but it
> probably got stuck on the MDS for some reason. Try grepping through
> the MDS and client logs for max_size and see if there's something
> obvious (or send it our way).

Logs are here:

   http://piha.soe.ucsc.edu/cephlogs/max_size/

-Noah

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: Client stuck 'waiting on max_size'
  2011-12-07  5:07     ` Noah Watkins
@ 2011-12-07  5:45       ` Gregory Farnum
  0 siblings, 0 replies; 6+ messages in thread
From: Gregory Farnum @ 2011-12-07  5:45 UTC (permalink / raw)
  To: Noah Watkins; +Cc: ceph-devel

I see a lot of this:
2011-12-06 19:42:50.401143 7fc8b1850700 mds.0.locker  i want to change
file_max, but lock won't allow it (yet)
2011-12-06 19:42:50.401168 7fc8b1850700 mds.0.locker file_excl (ifile
sync) on [inode 10000000cda [2,head] /noah.bin auth v1600 s=0 n(v0
1=1+0) (iversion lock) cr={6143=0-67108864@1}
caps={6139=-/pFscr@2,6143=pAsLsXsFc/pFscr@4},l=6143 | c
aps dirty 0x1f87c80]

Unfortunately I'm having trouble thinking straight so dealing with it
will have to wait until morning, but it shouldn't be too hard to track
down what's happening.

On Tue, Dec 6, 2011 at 9:07 PM, Noah Watkins <jayhawk@cs.ucsc.edu> wrote:
> On 12/6/11 8:49 PM, Gregory Farnum wrote:
>>
>> The client is waiting for the MDS to give it permission to make the
>> file larger. I think this data comes back in a caps message, but it
>> probably got stuck on the MDS for some reason. Try grepping through
>> the MDS and client logs for max_size and see if there's something
>> obvious (or send it our way).
>
>
> Logs are here:
>
>  http://piha.soe.ucsc.edu/cephlogs/max_size/
>
> -Noah
--
To unsubscribe from this list: send the line "unsubscribe ceph-devel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: Client stuck 'waiting on max_size'
  2011-12-07  4:02 ` Client stuck 'waiting on max_size' Noah Watkins
  2011-12-07  4:49   ` Gregory Farnum
@ 2011-12-07  4:56   ` Sage Weil
  2011-12-07  5:13     ` Noah Watkins
  1 sibling, 1 reply; 6+ messages in thread
From: Sage Weil @ 2011-12-07  4:56 UTC (permalink / raw)
  To: Noah Watkins; +Cc: ceph-devel

On Tue, 6 Dec 2011, Noah Watkins wrote:
> I have a simple libcephfs client (code attached) that:
> 
> 1) mounts ceph
> 2) opens/create a file

Does the file already exist when you run this?  Is the result different if 
the file is (not) already present?

sage


> 3) writes 1K
> 
> But gets stuck on the write. The client log repeats the following over and over. (c code for test appended).
> 
> Thanks,
> Noah
> 
> 
> 2011-12-06 19:50:23.329501 7ff3a7023700 client.6154  cap mds.0 issued pAsLsXsFscr implemented pAsLsXsFscr revoking -
> 2011-12-06 19:50:37.330474 7ff3a7023700 client.6154 renew_caps()
> 2011-12-06 19:50:37.330536 7ff3a7023700 client.6154 renew_caps requesting from mds.0
> 2011-12-06 19:50:37.330549 7ff3a7023700 client.6154 renew_caps mds.0
> 2011-12-06 19:50:37.331304 7ff3a6021700 client.6154 handle_client_session client_session(renewcaps seq 4) v1
> 2011-12-06 19:50:37.331357 7ff3a9eb7760 client.6154 waiting on max_size, endoff 1024 max_size 0
> 2011-12-06 19:50:57.331975 7ff3a7023700 client.6154 renew_caps()
> 2011-12-06 19:50:57.332021 7ff3a7023700 client.6154 renew_caps requesting from mds.0
> 2011-12-06 19:50:57.332036 7ff3a7023700 client.6154 renew_caps mds.0
> 2011-12-06 19:50:57.332757 7ff3a6021700 client.6154 handle_client_session client_session(renewcaps seq 5) v1
> 2011-12-06 19:50:57.332809 7ff3a9eb7760 client.6154 waiting on max_size, endoff 1024 max_size 0
> 2011-12-06 19:51:17.333445 7ff3a7023700 client.6154 renew_caps()
> 2011-12-06 19:51:17.333492 7ff3a7023700 client.6154 renew_caps requesting from mds.0
> 2011-12-06 19:51:17.333507 7ff3a7023700 client.6154 renew_caps mds.0
> 2011-12-06 19:51:17.334220 7ff3a6021700 client.6154 handle_client_session client_session(renewcaps seq 6) v1
> 2011-12-06 19:51:17.334274 7ff3a9eb7760 client.6154 waiting on max_size, endoff 1024 max_size 0
> 2011-12-06 19:51:37.334880 7ff3a7023700 client.6154 renew_caps()
> 2011-12-06 19:51:37.334927 7ff3a7023700 client.6154 renew_caps requesting from mds.0
> 2011-12-06 19:51:37.334941 7ff3a7023700 client.6154 renew_caps mds.0
> 2011-12-06 19:51:37.335657 7ff3a6021700 client.6154 handle_client_session client_session(renewcaps seq 7) v1
> 2011-12-06 19:51:37.335707 7ff3a9eb7760 client.6154 waiting on max_size, endoff 1024 max_size 0
> 2011-12-06 19:51:57.336312 7ff3a7023700 client.6154 renew_caps()
> 2011-12-06 19:51:57.336356 7ff3a7023700 client.6154 renew_caps requesting from mds.0
> 2011-12-06 19:51:57.336370 7ff3a7023700 client.6154 renew_caps mds.0
> 2011-12-06 19:51:57.337057 7ff3a6021700 client.6154 handle_client_session client_session(renewcaps seq 8) v1
> 2011-12-06 19:51:57.337109 7ff3a9eb7760 client.6154 waiting on max_size, endoff 1024 max_size 0
> 2011-12-06 19:52:17.337745 7ff3a7023700 client.6154 renew_caps()
> 2011-12-06 19:52:17.337791 7ff3a7023700 client.6154 renew_caps requesting from mds.0
> 2011-12-06 19:52:17.337805 7ff3a7023700 client.6154 renew_caps mds.0
> 2011-12-06 19:52:17.338499 7ff3a6021700 client.6154 handle_client_session client_session(renewcaps seq 9) v1
> 2011-12-06 19:52:17.338550 7ff3a9eb7760 client.6154 waiting on max_size, endoff 1024 max_size 0
> 2011-12-06 19:52:37.339187 7ff3a7023700 client.6154 renew_caps()
> 2011-12-06 19:52:37.339236 7ff3a7023700 client.6154 renew_caps requesting from mds.0
> 2011-12-06 19:52:37.339250 7ff3a7023700 client.6154 renew_caps mds.0
> 2011-12-06 19:52:37.339968 7ff3a6021700 client.6154 handle_client_session client_session(renewcaps seq 10) v1
> 2011-12-06 19:52:37.340015 7ff3a9eb7760 client.6154 waiting on max_size, endoff 1024 max_size 0
> 
> 
> =============
> 
> #define _FILE_OFFSET_BITS 64
> #include <sys/types.h>
> #include <sys/stat.h>
> #include <fcntl.h>
> #include <stdio.h>
> #include <stdlib.h>
> #include <string.h>
> #include <cephfs/libcephfs.h>
> 
> #define MB64 (1<<26)
> 
> int main(int argc, const char **argv)
> {
> 	struct ceph_mount_info *cmount;
> 	int ret, fd, len;
> 	char buf[1024];
> 
> 	if (argc < 3) {
> 		fprintf(stderr, "usage: ./%s <conf> <file>\n", argv[0]);
> 		exit(1);
> 	}
> 
> 	ret = ceph_create(&cmount, NULL);
> 	if (ret) {
> 		fprintf(stderr, "ceph_create=%d\n", ret);
> 		exit(1);
> 	}
> 
> 	ret = ceph_conf_read_file(cmount, argv[1]);
> 	if (ret) {
> 		fprintf(stderr, "ceph_conf_read_file=%d\n", ret);
> 		exit(1);
> 	}
> 
> 	ret = ceph_conf_parse_argv(cmount, argc, argv);
> 	if (ret) {
> 		fprintf(stderr, "ceph_conf_parse_argv=%d\n", ret);
> 		exit(1);
> 	}
> 
> 	ret = ceph_mount(cmount, NULL);
> 	if (ret) {
> 		fprintf(stderr, "ceph_mount=%d\n", ret);
> 		exit(1);
> 	}
> 
> 	ret = ceph_chdir(cmount, "/");
> 	if (ret) {
> 		fprintf(stderr, "ceph_chdir=%d\n", ret);
> 		exit(1);
> 	}
> 
> 	fd = ceph_open(cmount, argv[2], O_CREAT|O_TRUNC, 0777);	
> 	if (fd < 0) {
> 		fprintf(stderr, "ceph_open=%d\n", fd);
> 		exit(1);
> 	}
> 
> 	memset(buf, 'a', sizeof(buf));
> 
> 	len = ceph_write(cmount, fd, buf, sizeof(buf), 0);
> 
> 	fprintf(stdout, "wrote %d bytes\n", len);
> 
> 	ceph_shutdown(cmount);
> 
> 	return 0;
> }
> --
> To unsubscribe from this list: send the line "unsubscribe ceph-devel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 
> 

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: Client stuck 'waiting on max_size'
  2011-12-07  4:56   ` Sage Weil
@ 2011-12-07  5:13     ` Noah Watkins
  0 siblings, 0 replies; 6+ messages in thread
From: Noah Watkins @ 2011-12-07  5:13 UTC (permalink / raw)
  To: Sage Weil; +Cc: Noah Watkins, ceph-devel

On 12/6/11 8:56 PM, Sage Weil wrote:
> On Tue, 6 Dec 2011, Noah Watkins wrote:
>> I have a simple libcephfs client (code attached) that:
>>
>> 1) mounts ceph
>> 2) opens/create a file
>
> Does the file already exist when you run this?  Is the result different if
> the file is (not) already present?

- If the file already exists then it is truncated.
- If the file doesn't exist the file is created, but it remains zero length.
- In both cases the client still hangs.

-Noah

^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2011-12-07  5:45 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
     [not found] <726402583.133585.1323230432339.JavaMail.root@mail-01.cse.ucsc.edu>
2011-12-07  4:02 ` Client stuck 'waiting on max_size' Noah Watkins
2011-12-07  4:49   ` Gregory Farnum
2011-12-07  5:07     ` Noah Watkins
2011-12-07  5:45       ` Gregory Farnum
2011-12-07  4:56   ` Sage Weil
2011-12-07  5:13     ` Noah Watkins

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