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libceph: Allocate larger oid buffer in request msgs

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ceph_osd_request struct allocates a 40-byte buffer for object names.
RBD image names can be up to 96 chars long (100 with the .rbd suffix),
which results in the object name for the image being truncated, and a
subsequent map failure.

Increase the oid buffer in request messages, in order to avoid the
truncation.

Signed-off-by: Stratos Psomadakis <psomas@grnet.gr>
Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Stratos Psomadakis 2011-11-10 15:45:37 +02:00 committed by Sage Weil
parent 774ac21da7
commit 224736d911
2 changed files with 8 additions and 2 deletions
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8
include/linux/ceph/osd_client.h
View File

@ -10,6 +10,12 @@
#include "osdmap.h"
#include "messenger.h"
/*
* Maximum object name size
* (must be at least as big as RBD_MAX_MD_NAME_LEN -- currently 100)
*/
#define MAX_OBJ_NAME_SIZE 100
struct ceph_msg;
struct ceph_snap_context;
struct ceph_osd_request;
@ -75,7 +81,7 @@ struct ceph_osd_request {
struct inode *r_inode; /* for use by callbacks */
void *r_priv; /* ditto */
char r_oid[40]; /* object name */
char r_oid[MAX_OBJ_NAME_SIZE]; /* object name */
int r_oid_len;
unsigned long r_stamp; /* send OR check time */

2
net/ceph/osd_client.c
View File

@ -244,7 +244,7 @@ struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
ceph_pagelist_init(req->r_trail);
}
/* create request message; allow space for oid */
msg_size += 40;
msg_size += MAX_OBJ_NAME_SIZE;
if (snapc)
msg_size += sizeof(u64) * snapc->num_snaps;
if (use_mempool)