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From: Ramon Fischer <Ramon_Fischer@hotmail.de>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] cryptsetup close and device in use when it is not
Date: Tue, 15 Jun 2021 21:04:01 +0200	[thread overview]
Message-ID: <AM6PR10MB24400D397A61BAA254F48C14EF309@AM6PR10MB2440.EURPRD10.PROD.OUTLOOK.COM> (raw)
In-Reply-To: <649753f7-5dcd-1842-875d-d637ef754b9f@gmail.com>


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If the "umount" command seems to be hanging next time, it is most likely 
due to cache writebacks. You can monitor this like so:

    $ watch "grep 'Dirty\|Writeback' /proc/meminfo"

-Ramon

On 15/06/2021 17:26, Dale wrote:
> Jack wrote:
>> On 6/15/21 10:21 AM, Dale wrote:
>>> Ramon Fischer wrote:
>>>> Hello Dale,
>>>>
>>>> this also happens to me sometimes and the culprit was an open process
>>>> still accessing the hard drive. Maybe you can solve it like this:
>>>>
>>>>      $ lsof /mnt/8tb
>>>>      zsh       8390 root  cwd    DIR  253,2      4096 27787265 /mnt/8tb
>>>>      $ kill 8390
>>>>      $ lsof /mnt/8tb
>>>>
>>>> After that, you should be able to close the drive via "cryptsetup".
>>>>
>>>> -Ramon
>>>>
>>>> On 14/06/2021 06:50, Dale wrote:
>>>>> root@fireball / # cryptsetup close 8tb
>>>>> Device 8tb is still in use.
>>>>> root@fireball / # mount | grep 8tb
>>>>> root@fireball / #
>>> I've tried lsof before, for both mount point and device, it shows
>>> nothing open.  It's weird.
>>>
>>> When this happened last night, just before I posted, I let the drive sit
>>> there while I was doing updates.  Later on, I tried to close it again
>>> and it closed just fine.  I hadn't done anything except let it sit
>>> there.  While I was glad it closed, I wonder why it did it.  Did udev
>>> finally catch up to the state of the drive?  Did some other device
>>> update and allow it to close?
>>>
>>> This is weird.  Everything says it is ready to be closed but it thinks
>>> something is open.  I'm not sure what to point too for the problem.  Yet
>>> anyway.
>>>
>>> Thanks for the tip.  It was worth mentioning.
>>>
>>> Dale
>> Is it possible it was still syncing cache out to the physical drive?
>> I wonder if iotop would show any activity for that drive if that's the
>> case?
>>
>> Jack
>>
>>
>>
>
> I may try that next time but the light had stopped blinking for several
> minutes.  Since it is a SMR drive, I always leave it running until I
> can't feel the heads bumping around.  I don't think it would be that
> but, it's worth a try. It may lead to something.
>
> Will update when it does it again.
>
> Thanks.
>
> Dale
>
> :-)  :-)
>

-- 
GPG public key: 5983 98DA 5F4D A464 38FD CF87 155B E264 13E6 99BF



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  reply	other threads:[~2021-06-15 19:04 UTC|newest]

Thread overview: 64+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-14  4:50 [gentoo-user] cryptsetup close and device in use when it is not Dale
2021-06-15 13:48 ` Ramon Fischer
2021-06-15 14:21   ` Dale
2021-06-15 14:52     ` Jack
2021-06-15 15:26       ` Dale
2021-06-15 19:04         ` Ramon Fischer [this message]
2021-06-21  4:18         ` Dale
2021-06-21  4:49           ` Dale
2021-06-21  5:41             ` Dale
2021-06-21  5:59               ` Dale
2021-06-28  3:35                 ` Dale
2021-07-05  3:19                   ` Dale
2021-07-06 18:40                     ` Ramon Fischer
2021-07-06 19:43                       ` Dale
2021-07-07 14:48                       ` Dr Rainer Woitok
2021-07-07 18:08                         ` Dale
2021-07-08  8:20                           ` Ramon Fischer
2021-07-12  8:31                             ` Dale
2021-07-12 13:14                               ` Ramon Fischer
2021-08-02 13:33                                 ` Dale
2021-08-09 13:38                                   ` Ramon Fischer
2021-09-19 11:55                                     ` Dale
2021-07-25 20:29                           ` Frank Steinmetzger
2021-07-25 23:10                             ` Dale
2021-07-26 21:00                               ` Frank Steinmetzger
2021-07-26 22:48                                 ` Dale
2021-07-29 16:46                                 ` Wols Lists
2021-07-29 20:55                                   ` [gentoo-user] [OT] SMR drives (WAS: cryptsetup close and device in use when it is not) Frank Steinmetzger
2021-07-29 21:31                                     ` Frank Steinmetzger
2021-07-30 12:48                                       ` Frank Steinmetzger
2021-07-30  5:14                                     ` William Kenworthy
2021-07-30 14:29                                       ` Rich Freeman
2021-07-30 16:50                                         ` antlists
2021-07-30 18:38                                           ` Rich Freeman
2021-07-31  3:14                                         ` William Kenworthy
2021-07-31  3:50                                           ` Wols Lists
2021-07-31  4:58                                             ` William Kenworthy
2021-07-31 12:12                                               ` Rich Freeman
2021-08-01  0:41                                                 ` Frank Steinmetzger
2021-08-01  0:56                                                   ` Rich Freeman
2021-07-31 16:38                                               ` antlists
2021-08-01  0:50                                               ` Frank Steinmetzger
2021-08-01  3:36                                                 ` William Kenworthy
2021-08-01  3:46                                                   ` William Kenworthy
2021-08-01 21:38                                                     ` Frank Steinmetzger
2021-08-02  5:38                                                       ` William Kenworthy
2021-08-02 21:52                                                         ` Frank Steinmetzger
2021-08-02 23:10                                                           ` William Kenworthy
2021-08-03  8:18                                                             ` Frank Steinmetzger
2021-08-05 20:40                                                               ` Frank Steinmetzger
2021-08-06  7:22                                                                 ` William Kenworthy
2021-08-01 21:55                                                   ` Frank Steinmetzger
2021-08-02  6:12                                                     ` William Kenworthy
2021-08-02 22:03                                                       ` Frank Steinmetzger
2021-08-02 23:35                                                         ` William Kenworthy
2021-08-01  3:41                                                 ` William Kenworthy
2021-08-01 21:41                                                   ` Frank Steinmetzger
2021-07-31 12:21                                             ` Rich Freeman
2021-07-31 12:59                                               ` William Kenworthy
2021-07-31 13:30                                                 ` Rich Freeman
2021-08-01  3:05                                                   ` William Kenworthy
2021-08-01 11:37                                                     ` Rich Freeman
2021-07-31  5:23                                           ` William Kenworthy
2021-06-15 17:48     ` [gentoo-user] Re: cryptsetup close and device in use when it is not Remy Blank

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