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backups: make released block device visible to the block manager

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Devices used as part of other device (e.g. LUKS) are marked as
unavailable. So after releasing the device it need to be discovered
again. Unfortunately udev event isn't triggered on such occasion (only
"remove" event for device-mapper dev). This patch triggers this event
manually.
This commit is contained in:
Marek Marczykowski-Górecki 2014-01-13 05:09:07 +01:00
parent 02ac37c316
commit c5ed749c22
1 changed files with 9 additions and 0 deletions
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9
qubesmanager/backup_utils.py
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@ -81,6 +81,15 @@ def detach_device(dialog, dev_name):
with dialog.blk_manager.blk_lock:
dialog.blk_manager.detach_device(dialog.vm, dev_name)
dialog.blk_manager.update()
else:
# umount/LUKS remove do not trigger udev event on underlying device,
# so trigger it manually - to publish back as available device
subprocess.call(["sudo", "udevadm", "trigger", "--action=change",
"--subsystem-match=block",
"--sysname-match=%s" % dev_name.split(":")[1]])
with dialog.blk_manager.blk_lock:
dialog.blk_manager.update()
def fill_appvms_list(dialog):
dialog.appvm_combobox.clear()