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sheepdog: improve error handling for a case of failed lock

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Recently, sheepdog revived its VDI locking functionality. This patch
updates sheepdog driver of QEMU for this feature. It changes an error
code for a case of failed locking. -EBUSY is a suitable one.

Reported-by: Valerio Pachera <sirio81@gmail.com>
Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Cc: Liu Yuan <namei.unix@gmail.com>
Cc: MORITA Kazutaka <morita.kazutaka@gmail.com>
Signed-off-by: Hitoshi Mitake <mitake.hitoshi@lab.ntt.co.jp>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Hitoshi Mitake 2014-08-11 14:43:46 +09:00 committed by Stefan Hajnoczi
parent 1dbfafed7f
commit 38890b246d
1 changed files with 2 additions and 0 deletions
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block/sheepdog.c
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@ -1115,6 +1115,8 @@ static int find_vdi_name(BDRVSheepdogState *s, const char *filename,
sd_strerror(rsp->result), filename, snapid, tag);
if (rsp->result == SD_RES_NO_VDI) {
ret = -ENOENT;
} else if (rsp->result == SD_RES_VDI_LOCKED) {
ret = -EBUSY;
} else {
ret = -EIO;
}