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From: Fiona Ebner <f.ebner@proxmox.com>
To: "Fabian Grünbichler" <f.gruenbichler@proxmox.com>,
	"Christian Ebner" <c.ebner@proxmox.com>,
	"Proxmox VE development discussion" <pve-devel@lists.proxmox.com>
Subject: Re: [pve-devel] [PATCH v2 storage] api: fix get content call for volumes
Date: Tue, 7 Mar 2023 10:15:52 +0100	[thread overview]
Message-ID: <a73703b3-6caf-9ce0-1158-066ab7f24280@proxmox.com> (raw)
In-Reply-To: <1678178711.44w60pfavx.astroid@yuna.none>

Am 07.03.23 um 09:51 schrieb Fabian Grünbichler:
> On March 7, 2023 9:31 am, Fiona Ebner wrote:
> 
> unfortunately not the case - a zvol can take up (significantly) more space than
> volsize:
> 
> $ zpool get ashift testpool
> NAME      PROPERTY  VALUE   SOURCE
> testpool  ashift    12      local
> $ zfs get volsize,volblocksize,space testpool/test
> NAME           PROPERTY              VALUE          SOURCE
> testpool/test  volsize               5G             local
> testpool/test  volblocksize          8K             default
> testpool/test  name                  testpool/test  -
> testpool/test  available             11.2G          -
> testpool/test  used                  7.43G          -
> testpool/test  usedbysnapshots       0B             -
> testpool/test  usedbydataset         7.32G          -
> testpool/test  usedbyrefreservation  111M           -
> testpool/test  usedbychildren        0B             -
> 
> this is the common "ashift=12 / volblocksize=8 / raidz2" pitfall..

Oh, right. Well, I'd say usedbydataset is still more consistent with the
current values for $used and I guess it's technically true even if $used
> $size.




  reply	other threads:[~2023-03-07  9:16 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-06 13:07 Christian Ebner
2023-03-07  8:31 ` Fiona Ebner
2023-03-07  8:51   ` Fabian Grünbichler
2023-03-07  9:15     ` Fiona Ebner [this message]
2023-03-07  9:17     ` Christian Ebner

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