From: Zdenek Kabelac <email@example.com>
To: LVM general discussion and development <firstname.lastname@example.org>,
Thomas Deutschmann <email@example.com>
Subject: Re: [linux-lvm] lvcreate hangs forever during snapshot creation when suspending volume
Date: Tue, 2 Aug 2022 16:52:47 +0200 [thread overview]
Message-ID: <firstname.lastname@example.org> (raw)
Dne 02. 08. 22 v 5:01 Thomas Deutschmann napsal(a):
> Zdenek Kabelac wrote:
>> Now - you suggests you are able to reproduce this issue also on your bare
>> metal hw - in this case run these 3 commands before 'lvcreate'
>> Zdenek Kabelac wrote:
>> Note: you could always 'experiment' without lvm2 in the picture -
>> you can ran 'fsfreeze --freeze|--unfreeze' yourself - to see whether
>> this command is able to finish ?
> fsfreeze caused the same problem :/
> I also changed filesystem from xfs to ext4 just in case... same issue.
> For testing I stopped the MDRAID and removed one NVMe disk which I
> cleared and where I created a new ext4 partition. Running
> $ fsfreeze --freeze /mnt/test
> returned within seconds and I was unable do any I/O against /mnt/test
> as expected.
> I unfreezed the filesystem and started to copy ~50GB to the volume.
> After waiting 5 minutes and verifying that /proc/meminfo didn't list
> any 'dirty' pages, I re-run the fsfreeze command which caused the
> same issue -- system hangs. :/
> I will repeat the test with the other NVMe later...
> So probably a kernel/driver issue or hardware problem.
So as guessed earlier - unrelated to lvm2.
You likely need to discover what is wrong with your 'raid' device ?
Was your raid array fully synchronized ?
Do you have only problem with one particular MD 'raid' on your system - or
any other 'raid' you attach/create will suffer the same problem ?
Is it 'nvme' related on your system ?
Are the 'individual' nvme devices running fine - just when they are mixed
together into a single array you get these 'fsfreeze' troubles ?
linux-lvm mailing list
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
next prev parent reply other threads:[~2022-08-02 14:53 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-30 16:33 [linux-lvm] lvcreate hangs forever during snapshot creation when suspending volume Thomas Deutschmann
2022-08-01 17:29 ` Zdenek Kabelac
2022-08-01 17:34 ` Zdenek Kabelac
2022-08-01 20:34 ` Thomas Deutschmann
2022-08-02 3:01 ` Thomas Deutschmann
2022-08-02 14:52 ` Zdenek Kabelac [this message]
2022-08-03 1:37 ` Thomas Deutschmann
2022-08-28 22:38 ` Thomas Deutschmann
2022-08-29 10:32 ` Zdenek Kabelac
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