Ken/Tom,
On Solaris 5.11 snv_96 i86pc I'm seeing failures when running the db2
hash tests found in src/plugins/kdb/db2/libdb2/test. What is happening
is in test1 there is a put() followed by a get() which is failing with
this error message:
get failed, no such key
I'm running:
./dbtest -o ./t3 hash ./t2
Its failing because in:
__get_item() there is this code to calculate the key->size:
if (KEY_OFF(cursorp->pagep, cursorp->pgndx) != BIGPAIR) {
if ((i = prev_realkey(cursorp->pagep, cursorp->pgndx)) ==
cursorp->pgndx)
key->size = hashp->hdr.bsize -
KEY_OFF(cursorp->pagep, cursorp->pgndx);
Now I know that the put() key->size was 5 but after the assignment above
key->size is 65541. The problem is that on Solaris:
KEY_OFF(cursorp->pagep, cursorp->pgndx) = 65531
hashp->hdr.bsize = 131072
And hashp->hdr.bsize is being set in init_hash here:
/* Fix bucket size to be optimal for file system */
if (file != NULL) {
if (stat(file, &statbuf))
return (NULL);
hashp->hdr.bsize = statbuf.st_blksize;
And statbuf.st_blksize = 131072. Note that I'm running dbtest on a ZFS
filesystem. And googling I notice some posts about how ZFS uses
variable block sizes.
So either is the above code is making some bad assumptions or stat() is
buggy. Thoughts?
--
Will Fiveash
Sun Microsystems Inc.
http://opensolaris.org/os/project/kerberos/
