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test/bdev/nbd: allow building with old kernels

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Older kernels do not support flush or trim operations; add #ifdefs to
allow the NBD test code to work on those kernels.

Fixes build on older distributions (e.g. CentOS 6).

Change-Id: Iae06f96b7db9a3bf4a494e2b2c2c15b37e6c1293
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/367132
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This commit is contained in:
Daniel Verkamp 2017-06-26 13:22:20 -07:00
parent 0d7e2b6416
commit dbbde9991d
1 changed files with 6 additions and 0 deletions
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6
test/lib/bdev/nbd/nbd.c
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@ -232,14 +232,18 @@ process_request(struct nbd_disk *nbd)
case NBD_CMD_DISC:
nbd_shutdown();
return;
#ifdef NBD_FLAG_SEND_FLUSH
case NBD_CMD_FLUSH:
io->type = SPDK_BDEV_IO_TYPE_FLUSH;
nbd_submit_bdev_io(nbd->bdev, nbd->ch, io);
break;
#endif
#ifdef NBD_FLAG_SEND_TRIM
case NBD_CMD_TRIM:
io->type = SPDK_BDEV_IO_TYPE_UNMAP;
nbd_submit_bdev_io(nbd->bdev, nbd->ch, io);
break;
#endif
}
}
@ -320,11 +324,13 @@ nbd_start_kernel(int nbd_fd, int *sp)
exit(-1);
}
#ifdef NBD_FLAG_SEND_TRIM
rc = ioctl(nbd_fd, NBD_SET_FLAGS, NBD_FLAG_SEND_TRIM);
if (rc == -1) {
SPDK_ERRLOG("ioctl(NBD_SET_FLAGS) failed: %s\n", strerror(errno));
exit(-1);
}
#endif
/* This will block in the kernel until the client disconnects. */
ioctl(nbd_fd, NBD_DO_IT);