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zdev: Enable running chzdev from unknown root devices

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When a persistent device configuration is changed, chzdev tries to
find out if it needs to perform additional steps to make this change
persistent. If this check fails, for example because the root device
is located on a RAM-disk, or on a device type not managed by chzdev,
the tool reports an error and exits with non-zero exit code:

  chzdev: Could not determine device that provides /

or

  chzdev: Could not determine device that provides loop0

This behavior unnecessarily restricts chzdev from being used in
scripted environments like an installation initial RAM-disk.

Fix this by removing the non-zero exit code and moving the message to
verbose output mode only.

Signed-off-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
This commit is contained in:
Peter Oberparleiter
2017-12-05 15:40:23 +01:00
committed by Michael Holzheu
parent e581fa3fea
commit 2a6a28023b
1 changed files with 7 additions and 2 deletions
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9
zdev/src/root.c
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@@ -37,9 +37,14 @@ exit_code_t root_check(void)
/* Get list of devices that provide the root device. */
selected = selected_dev_list_new();
rc = select_by_path(NULL, selected, config_active, scope_mandatory,
NULL, NULL, PATH_ROOT, err_print);
if (rc)
NULL, NULL, PATH_ROOT, err_ignore);
if (rc) {
/* Running from an unknown root device is not an error. */
verb("Note: Could not determine if root device configuration "
"needs to be updated\n");
rc = 0;
goto out;
}
/* Determine if any of the devices or device types has been modified. */
mod = strlist_new();