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filestore: remove stray async_snap_test if present

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This cleans up if a prior instance failed to delete its
async_snap_test subvol.
This commit is contained in:
Sage Weil 2010-03-18 11:33:32 -07:00 committed by Yehuda Sadeh
parent 953ef1da8a
commit a3d8c1ffd1
1 changed files with 12 additions and 1 deletions
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13
src/os/FileStore.cc
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@ -535,10 +535,21 @@ int FileStore::_detect_fs()
if (btrfs_wait_sync) {
// async snap creation?
struct btrfs_ioctl_vol_args volargs;
volargs.fd = fd;
volargs.fd = 0;
strcpy(volargs.name, "async_snap_test");
volargs.transid = 0;
volargs.reserved = 0;
// remove old one, first
struct stat st;
if (::fstatat(fd, volargs.name, &st, 0) == 0) {
dout(0) << "mount btrfs removing old async_snap_test" << dendl;
r = ::ioctl(fd, BTRFS_IOC_SNAP_DESTROY, &volargs);
if (r != 0)
dout(0) << "mount failed to remove old async_snap_test: " << strerror_r(-r, buf, sizeof(buf)) << dendl;
}
volargs.fd = fd;
r = ::ioctl(fd, BTRFS_IOC_SNAP_CREATE_ASYNC, &volargs);
dout(0) << "mount btrfs SNAP_CREATE_ASYNC got " << r << " " << strerror_r(-r, buf, sizeof(buf)) << dendl;
if (r == 0 || errno == EEXIST) {