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parallels: create container from existing image

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It's possible to create a container with existing
disk image as root filesystem. You need to remove
existing disks from PCS VM config and then add a new
one, pointing to your image. And then call PrlVm_RegEx
with PRNVM_PRESERVE_DISK flag.

With this patch you can create such container with
something like this for new domain XML config:

    <filesystem type='file' accessmode='passthrough'>
      <driver type='ploop' format='ploop'/>
      <source file='/path-to-image'/>
      <target dir='/'/>
    </filesystem>

Signed-off-by: Dmitry Guryanov <dguryanov@parallels.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Dmitry Guryanov 2015-01-13 14:27:40 +03:00 committed by Michal Privoznik
parent aba95c287c
commit 2bc460d3c1
1 changed files with 24 additions and 10 deletions
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34
src/parallels/parallels_sdk.c
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@ -2907,14 +2907,26 @@ prlsdkCreateCt(virConnectPtr conn, virDomainDefPtr def)
PRL_HANDLE result = PRL_INVALID_HANDLE; PRL_HANDLE result = PRL_INVALID_HANDLE;
PRL_RESULT pret; PRL_RESULT pret;
int ret = -1; int ret = -1;
int useTemplate = 0;
size_t i;
if (def->nfss && (def->nfss > 1 || if (def->nfss > 1) {
def->fss[0]->type != VIR_DOMAIN_FS_TYPE_TEMPLATE)) { /* Check all filesystems */
for (i = 0; i < def->nfss; i++) {
virReportError(VIR_ERR_INVALID_ARG, "%s", if (def->fss[i]->type != VIR_DOMAIN_FS_TYPE_FILE) {
_("There must be no more than 1 template FS for " virReportError(VIR_ERR_INVALID_ARG, "%s",
"container creation")); _("Unsupported filesystem type."));
return -1; return -1;
}
}
} else if (def->nfss == 1) {
if (def->fss[0]->type == VIR_DOMAIN_FS_TYPE_TEMPLATE) {
useTemplate = 1;
} else if (def->fss[0]->type != VIR_DOMAIN_FS_TYPE_FILE) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("Unsupported filesystem type."));
return -1;
}
} }
confParam.nVmType = PVT_CT; confParam.nVmType = PVT_CT;
@ -2928,22 +2940,24 @@ prlsdkCreateCt(virConnectPtr conn, virDomainDefPtr def)
pret = PrlResult_GetParamByIndex(result, 0, &sdkdom); pret = PrlResult_GetParamByIndex(result, 0, &sdkdom);
prlsdkCheckRetGoto(pret, cleanup); prlsdkCheckRetGoto(pret, cleanup);
if (def->nfss == 1) { if (useTemplate) {
pret = PrlVmCfg_SetOsTemplate(sdkdom, def->fss[0]->src); pret = PrlVmCfg_SetOsTemplate(sdkdom, def->fss[0]->src);
prlsdkCheckRetGoto(pret, cleanup); prlsdkCheckRetGoto(pret, cleanup);
} }
ret = prlsdkDoApplyConfig(sdkdom, def); ret = prlsdkDoApplyConfig(sdkdom, def);
if (ret) if (ret)
goto cleanup; goto cleanup;
job = PrlVm_RegEx(sdkdom, "", PACF_NON_INTERACTIVE_MODE); job = PrlVm_RegEx(sdkdom, "",
PACF_NON_INTERACTIVE_MODE | PRNVM_PRESERVE_DISK);
if (PRL_FAILED(waitJob(job, privconn->jobTimeout))) if (PRL_FAILED(waitJob(job, privconn->jobTimeout)))
ret = -1; ret = -1;
cleanup: cleanup:
PrlHandle_Free(sdkdom); PrlHandle_Free(sdkdom);
return -1; return ret;
} }
int int