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From: Eric Ren <>
Cc: LVM general discussion and development <>
Subject: Re: [linux-lvm] When and why vgs command can change metadata and incur old metadata to be backed up?
Date: Sat, 4 Nov 2017 15:24:25 +0800	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

Hi Alasdair,

> Very simply if the metadata the command has just read in does not match
> the last backup stored in the local filesystem and the process is able
> and configured to write a new backup.
> The command that made the metadata change might not have written a
> backup if it crashed, was configured not to write backups, was running
> with the filesystem readonly (e.g. booted into a recovery mode), ran on
> a different node in a cluster, ran as part of an installer that chose
> not to give you any metadata backups, performed metadata recovery etc.
> (Plus an old release had a bug where the checking went wrong and it
> made a backup every time even though nothing had actually changed.)

Can you still recall the fix commit for that bug? I recently encountered 
a similar
problem on 2.02.98. Thanks in advance.


      reply	other threads:[~2017-11-04  7:24 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-10-30  6:06 [linux-lvm] When and why vgs command can change metadata and incur old metadata to be backed up? Eric Ren
2017-10-30 17:04 ` David Teigland
2017-10-30 18:11   ` Gionatan Danti
2017-10-30 18:50     ` David Teigland
2017-10-31  7:54     ` Eric Ren
2017-10-30 22:56 ` Alasdair G Kergon
2017-11-04  7:24   ` Eric Ren [this message]

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