[Cluster-devel] [PATCH] mkfs: Handle gfs2 creation on regular files
Andrew Price
anprice at redhat.com
Mon Jul 11 14:23:12 UTC 2011
mkfs.gfs2 previously exited if the target volume was a regular file.
This patch allows creation of gfs2 file systems on regular files by
removing an exiting check, guarding against calling device_topology()
and falling back to the default block size if the target is a regular
file. It also moves a stat() call out of check_mount() and into
main_mkfs() so that the result can be queried multiple times.
rhbz#719943
Signed-off-by: Andrew Price <anprice at redhat.com>
---
gfs2/mkfs/main_mkfs.c | 16 ++++++++--------
1 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/gfs2/mkfs/main_mkfs.c b/gfs2/mkfs/main_mkfs.c
index b0bb6e3..e24b284 100644
--- a/gfs2/mkfs/main_mkfs.c
+++ b/gfs2/mkfs/main_mkfs.c
@@ -483,14 +483,8 @@ static void are_you_sure(struct gfs2_sbd *sdp)
static void check_mount(char *device)
{
- struct stat st_buf;
int fd;
- if (stat(device, &st_buf) < 0)
- die( _("could not stat device %s\n"), device);
- if (!S_ISBLK(st_buf.st_mode))
- die( _("%s is not a block device\n"), device);
-
fd = open(device, O_RDONLY | O_NONBLOCK | O_EXCL | O_CLOEXEC);
if (fd < 0) {
@@ -561,6 +555,7 @@ void main_mkfs(int argc, char *argv[])
int rgsize_specified = 0;
uint64_t real_device_size;
unsigned char uuid[16];
+ struct stat st_buf;
memset(sdp, 0, sizeof(struct gfs2_sbd));
sdp->bsize = -1;
@@ -579,6 +574,9 @@ void main_mkfs(int argc, char *argv[])
verify_arguments(sdp);
+ if (stat(sdp->device_name, &st_buf) < 0)
+ die( _("could not stat device %s\n"), sdp->device_name);
+
check_mount(sdp->device_name);
sdp->device_fd = open(sdp->device_name, O_RDWR | O_CLOEXEC);
@@ -589,15 +587,17 @@ void main_mkfs(int argc, char *argv[])
if (!sdp->override)
are_you_sure(sdp);
- if (device_topology(sdp)) {
+ if (!S_ISREG(st_buf.st_mode) && device_topology(sdp)) {
fprintf(stderr, _("Device topology error\n"));
exit(-1);
}
if (sdp->bsize == -1) {
+ if (S_ISREG(st_buf.st_mode))
+ sdp->bsize = GFS2_DEFAULT_BSIZE;
/* See if optimal_io_size (the biggest I/O we can submit
without incurring a penalty) is a suitable block size. */
- if (sdp->optimal_io_size <= getpagesize() &&
+ else if (sdp->optimal_io_size <= getpagesize() &&
sdp->optimal_io_size >= sdp->minimum_io_size)
sdp->bsize = sdp->optimal_io_size;
/* See if physical_block_size (the smallest unit we can write
--
1.7.6
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