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qemu: Improve docs for virsh dump format

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The error in getCompressionType will never be reported, change
the errors codes into warning (VIR_WARN("%s", _(foo)); doesn't break
syntax-check rule), and also improve the docs in qemu.conf to tell
user the truth.
This commit is contained in:
Osier Yang 2011-07-28 09:37:52 +08:00
parent 9a34ebd357
commit 01e1ea1219
2 changed files with 16 additions and 9 deletions

10
src/qemu/qemu.conf

@ -196,8 +196,14 @@
# saving a domain in order to save disk space; the list above is in descending
# order by performance and ascending order by compression ratio.
#
# save_image_format is used when you use 'virsh save' at scheduled saving.
# dump_image_format is used when you use 'virsh dump' at emergency crashdump.
# save_image_format is used when you use 'virsh save' at scheduled
# saving, and it is an error if the specified save_image_format is
# not valid, or the requested compression program can't be found.
#
# dump_image_format is used when you use 'virsh dump' at emergency
# crashdump, and if the specified dump_image_format is not valid, or
# the requested compression program can't be found, this falls
# back to "raw" compression.
#
# save_image_format = "raw"
# dump_image_format = "raw"

15
src/qemu/qemu_driver.c

@ -2713,17 +2713,18 @@ getCompressionType(struct qemud_driver *driver)
*/
if (driver->dumpImageFormat) {
compress = qemudSaveCompressionTypeFromString(driver->dumpImageFormat);
/* Use "raw" as the format if the specified format is not valid,
* or the compress program is not available.
*/
if (compress < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("Invalid dump image format specified in "
"configuration file, using raw"));
VIR_WARN("%s", _("Invalid dump image format specified in "
"configuration file, using raw"));
return QEMUD_SAVE_FORMAT_RAW;
}
if (!qemudCompressProgramAvailable(compress)) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("Compression program for dump image format "
"in configuration file isn't available, "
"using raw"));
VIR_WARN("%s", _("Compression program for dump image format "
"in configuration file isn't available, "
"using raw"));
return QEMUD_SAVE_FORMAT_RAW;
}
}