![]() Note that this generally only resolves the acute problem of a filesystem stalling. Otherwise, restart your Mac before proceeding. If the affected volume resides on an external hard drive, detach that disk from your Mac, then reattach it.Repeat the backup task between each step, and stop if something has resolved the problem: When CCC suggests that you might have a hardware problem, here are the steps that we recommend you take to isolate the problem. Go to System Preferences > Security & Privacy > and verify that you do not have the system configured to log you out after a period of inactivity if that may overlap with a scheduled backup of the startup disk. Workaround: On Monterey, avoid logging out while a backup task is running. Tasks run fine when they are started when no user is logged in. Note that this only affects a task that is running during a logout event. This behavior did not occur on macOS Big Sur, and appears to be resolved for macOS Ventura. When you log out of a macOS Monterey system while a backup task is running, macOS will errantly unmount the source volume snapshot, and will do so despite CCC's dissent of the volume unmount request. We have found one exception to this though. In nearly every case where a task is aborted due to the source or destination disappearing, it's the result of a hardware issue. macOS Monterey ejects the source snapshot on logout We cannot solve these problems with a change to CCC, but the steps below can help you identify the problematic component. ![]() When you see these messages – there is a hardware problem or a negative hardware:macOS interaction afoot. Other times the device may not reappear until it is physically detached and reconnected to your Mac. Many times these messages will be perplexing because the storage device reboots and then immediately reappears, possibly before you see the message from the Finder. if a device does not handle the power state transition well. These events also may coincide with sleep/wake cycles, e.g. If simple file copying leads to volume disappearance, the most common explanation is that a communication failure occurred due to a crash of the storage device's firmware, or due to the (typically transient) failure of a component between the Mac and the storage (most often it's a USB hub or adapter). CCC is simply copying files from one volume to another. "Eject 'Your Backup Disk' before disconnecting or turning it off."Įven if this event occurred when a CCC task was running, please note that CCC can never be responsible for a device's apparent detachment from the system – CCC never interacts with hardware at that level. In other cases, you'll see a report from the Finder: Disk Not Ejected Properly To break the stall, the affected disk must be forcibly detached from your Mac or you must reboot by holding down the power button if the disk is internal. In these cases, macOS's kernel has failed to take action on the misbehaving filesystem and you can expect to see stalls in any application that attempts to read from or write to the affected volume. "The task was aborted because the filesystem is not responding."ĬCC will present this message when the source or destination volume hasn't accepted read or write activity in at least ten minutes, and a deliberate followup test verifies that a simple read or write request fails. While this is obviously an abrupt end to your backup task, it beats the alternative macOS behavior described next. If you see this message, macOS's kernel recognized that the affected filesystem was not responding and terminated it. In some cases, however, macOS or CCC will detect a hung filesystem and you will see one of the following messages from CCC: "The task was aborted because the disappeared." Many times that hardware problems occur, CCC will get meaningful errors from the filesystem that plainly indicate some sort of hardware problem, and CCC will report these at the end of the backup task. ![]() Everything is on the table – USB ports, cables, plugs, adapters, hubs, hard drive enclosures, storage devices – a problem with any of these components can lead to mayhem. Any time you see random errors, stalls, crashes, the destination volume "disappearing" in the middle of a backup task, reports from the Finder that a disk was ejected improperly, Finder lockups and other unruly behavior, we have to turn to old-fashioned troubleshooting to rule out the problematic component. There are several behavior patterns that inevitably boil down to a problem with a hardware component between your Mac and the storage.
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