Hello,
I encountered a problem with the sg_read() routine in readsector0.c
while testing an InfiniBand target having 4096 byte sectors. The
sg_read() routine assumes that sectors are 512 bytes long.
A patch for the problem follows.
John Kingman
--- readsector0.c.orig 2006-03-13 05:07:45.000000000 -0600
+++ readsector0.c 2007-07-03 14:20:14.000000000 -0500
@@ -51,7 +51,11 @@
int res;
int rd_opcode[] = {0x8, 0x28, 0xa8, 0x88};
int sz_ind;
-
+ struct stat filestatus;
+
+ if (fstat(sg_fd, &filestatus) != 0)
+ return PATH_DOWN;
+ bs = (filestatus.st_blksize > 4096)? 4096: filestatus.st_blksize;
memset(rdCmd, 0, cdbsz);
sz_ind = 1;
rdCmd[0] = rd_opcode[sz_ind];
@@ -97,7 +101,7 @@
extern int
readsector0 (struct checker * c)
{
- unsigned char buf[512];
+ unsigned char buf[4096];
int ret;
ret = sg_read(c->fd, &buf[0]);
--
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