[libvirt] [PATCH] Use the force flag for mkfs -t xfs

[Michal Privoznik]

On 03.04.2014 12:23, Ján Tomko wrote:
> Without this, building an XFS pool on a formatted partition
> fails with --overwrite.
>
> https://bugzilla.redhat.com/show_bug.cgi?id=927172
> ---
>   src/storage/storage_backend_fs.c | 12 +++++++-----
>   1 file changed, 7 insertions(+), 5 deletions(-)
>
> diff --git a/src/storage/storage_backend_fs.c b/src/storage/storage_backend_fs.c
> index e0244ba..1d85871 100644
> --- a/src/storage/storage_backend_fs.c
> +++ b/src/storage/storage_backend_fs.c
> @@ -665,11 +665,13 @@ virStorageBackendExecuteMKFS(const char *device,
>       int ret = 0;
>       virCommandPtr cmd = NULL;
>
> -    cmd = virCommandNewArgList(MKFS,
> -                               "-t",
> -                               format,
> -                               device,
> -                               NULL);
> +    cmd = virCommandNewArgList(MKFS, "-t", format, NULL);
> +
> +    /* use the force, otherwise mkfs.xfs won't overwrite existing fs */
> +    if (STREQ(format, "xfs"))
> +        virCommandAddArg(cmd, "-f");
> +
> +    virCommandAddArg(cmd, device);
>
>       if (virCommandRun(cmd, NULL) < 0) {
>           virReportSystemError(errno,
>

ACK

Michal