Branch HEAD

b=18624
i=zhenyu.xu
i=dmitry.zogin
Description: Unable to run several mkfs.lustre on loop devices at the same time.

diff --git a/lustre/ChangeLog b/lustre/ChangeLog
index 8014eb8..ff2507c 100644 (file)
--- a/lustre/ChangeLog
+++ b/lustre/ChangeLog
@@ -13,6 +13,13 @@ tbd  Sun Microsystems, Inc.
         removed cwd "./" (refer to Bugzilla 14399).
        * File join has been disabled in this release, refer to Bugzilla 16929.
 
         removed cwd "./" (refer to Bugzilla 14399).
        * File join has been disabled in this release, refer to Bugzilla 16929.
 

+Severity   : normal 
+Bugzilla   : 18624 
+Description: Unable to run several mkfs.lustre on loop devices at the same
+            time.
+Details    : mkfs.lustre returns error 256 on the concurrent loop devices
+            formatting. The solution is to proper handle the error.   
+

 Severity   : enhancement
 Bugzilla   : 19024
 Description: Update kernel to RHEL5.3 2.6.18-128.1.6.el5.
 Severity   : enhancement
 Bugzilla   : 19024
 Description: Update kernel to RHEL5.3 2.6.18-128.1.6.el5.

diff --git a/lustre/utils/mkfs_lustre.c b/lustre/utils/mkfs_lustre.c
index 41f5b19..5e0b303 100644 (file)
--- a/lustre/utils/mkfs_lustre.c
+++ b/lustre/utils/mkfs_lustre.c
@@ -265,6 +265,10 @@ int loop_setup(struct mkfs_opts *mop)
                         snprintf(cmd, cmdsz, "losetup %s %s", l_device,
                                  mop->mo_device);
                         ret = run_command(cmd, cmdsz);
                         snprintf(cmd, cmdsz, "losetup %s %s", l_device,
                                  mop->mo_device);
                         ret = run_command(cmd, cmdsz);

+                        if (ret == 256)
+                                /* someone else picked up this loop device
+                                 * behind our back */
+                                continue;

                         if (ret) {
                                 fprintf(stderr, "%s: error %d on losetup: %s\n",
                                         progname, ret, strerror(ret));
                         if (ret) {
                                 fprintf(stderr, "%s: error %d on losetup: %s\n",
                                         progname, ret, strerror(ret));