From: "Łukasz Czerpak" <lukasz.czerpak@gmail.com>
To: Zdenek Kabelac <zkabelac@redhat.com>
Cc: LVM general discussion and development <linux-lvm@redhat.com>
Subject: Re: [linux-lvm] Thin pool vg1-thinpool1-tpool (253:3) transaction_id is 549, while expected 505.
Date: Mon, 9 Dec 2019 15:18:36 +0100 [thread overview]
Message-ID: <B48327FD-46A3-4E49-8A71-44B21FA912AB@gmail.com> (raw)
In-Reply-To: <8489c3df-e12a-f343-212b-20b2f898b642@redhat.com>
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hi,
Sure, I will update the kernel as per your recommendation. Thank you for help and prompt replies!
In regards to “sharing thin-pool” - there are no VMs, only LXD that is using VG and thin-pool. After digging more I found relevant article:
https://discuss.linuxcontainers.org/t/is-it-safe-to-create-an-lvm-backed-storage-pool-that-can-be-shared-with-other-logical-volumes/5658/5 <https://discuss.linuxcontainers.org/t/is-it-safe-to-create-an-lvm-backed-storage-pool-that-can-be-shared-with-other-logical-volumes/5658/5>
This might be the reason. I will investigate it more and share results here.
--
pozdrawiam,
Łukasz Czerpak
> On 9 Dec 2019, at 14:59, Zdenek Kabelac <zkabelac@redhat.com> wrote:
>
> Dne 09. 12. 19 v 14:50 Łukasz Czerpak napsal(a):
>> hi,
>> It’s Ubuntu 18.04.3:
>> $ lvm version
>> LVM version: 2.02.176(2) (2017-11-03)
>> Library version: 1.02.145 (2017-11-03)
>> Driver version: 4.37.0
>> $ uname -a
>> Linux gandalf 4.15.0-72-generic #81-Ubuntu SMP Tue Nov 26 12:20:02 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
>> It’s weird as same error occurred few minutes ago. I wanted to take snapshot of thin volume and it first returned the following error:
>> $ lvcreate -s --name vmail-data-snapshot vg1/vmail-data
>> Using default stripesize 64.00 KiB.
>> Can't create snapshot vmail-data-snapshot as origin vmail-data is not suspended.
>> Failed to suspend thin snapshot origin vg1/vmail-data.
>> Then I tried with different volume:
>> $ lvcreate -s --name owncloud-data-snapshot vg1/owncloud-data
>> Using default stripesize 64.00 KiB.
>> Thin pool vg1-thinpool1-tpool (253:2) transaction_id is 574, while expected 572.
>> Failed to suspend vg1/thinpool1 with queued messages.
>> Same error when then tried to export LXD’s container:
>
> Hi
>
> While I'd highly recommend to move to kernel 4.20 (at least) - from name of your volumes - it does look like you are using thinp in some 'cloud' environment.
>
> For thin-pool it's critically important to always have thin-pool active only on a single machine. You must never run thin-pool activate on multiple machines (even if one machine is not using it - but just has it active).
>
> So we have seen already many times user have actived thin-pool on their host machines and then passed devices into virtual machines and used there the same thin-pool (so thin-pool has been activate multiple times at the same time).
>
> So please carefully check if this is not your case - as this would nicely explain why your 'transaction_id' got so much different.
>
> Regards
>
> Zdenek
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next prev parent reply other threads:[~2019-12-09 14:18 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-08 19:35 [linux-lvm] Thin pool vg1-thinpool1-tpool (253:3) transaction_id is 549, while expected 505 Łukasz Czerpak
2019-12-08 20:47 ` Łukasz Czerpak
2019-12-09 13:36 ` Zdenek Kabelac
2019-12-09 13:50 ` Łukasz Czerpak
2019-12-09 13:52 ` Łukasz Czerpak
2019-12-09 13:59 ` Zdenek Kabelac
2019-12-09 14:18 ` Łukasz Czerpak [this message]
2019-12-09 14:25 ` Zdenek Kabelac
-- strict thread matches above, loose matches on Subject: below --
2019-12-08 19:30 Łukasz Czerpak
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