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From: "heming.zhao@suse.com" <heming.zhao@suse.com>
To: David Teigland <teigland@redhat.com>
Cc: linux-lvm@redhat.com, Zdenek Kabelac <zkabelac@redhat.com>
Subject: Re: [linux-lvm] [PATCH] lib/metadata: add new api lv_is_available()
Date: Wed, 2 Sep 2020 00:15:56 +0800	[thread overview]
Message-ID: <bef9939e-0c36-12b6-5911-a62874636d64@suse.com> (raw)
In-Reply-To: <20200901150713.GB25039@redhat.com>



On 9/1/20 11:07 PM, David Teigland wrote:
> On Tue, Sep 01, 2020 at 05:09:23PM +0800, heming.zhao wrote:
>> 'broken' is acceptable and good word.
>> I'm only afraid end user don't know there is a new string item for lvs.
>> like me, I just know the lv_health_status string item from Zdenek's mail. (sorry for my stupid)
> 
> I also like Zdenek's "usable", which seems to be closer to what we mean.
> In addition to the reporting field can could be a new letter in the 9th lv
> attr field.  (We'd have to figure out the priority of this letter vs the
> others.)
> 
to add 9th (U)sable for the common case? I think it will overwrite (p)artial when top
layer LV non-usable. otherwise there may have no chance to show this new letter.
Zdenek ever said, He worried about compatibility issues. He preferred to add
'lv_usable' option, not new letter in 9th bit.

>> I prefer lvm report status from the entire LV side.
>> lvm provides virtual blocks to upper layer softwares, most of softwares use whole virtual disk.
> 
> Limit this to what lvm knows already.  The field will represent whether
> lvm believes the uppser layer can successfully do io to the entire LV.
> 
agree

> Dave
> 

  reply	other threads:[~2020-09-01 16:16 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-27 16:05 Zhao Heming
2020-08-27 16:07 ` heming.zhao
2020-08-28 16:04 ` Zdenek Kabelac
2020-08-28 18:26   ` David Teigland
2020-08-30 15:49     ` heming.zhao
2020-08-30 17:06       ` Zdenek Kabelac
2020-08-31 22:37       ` David Teigland
2020-09-01  9:09         ` heming.zhao
2020-09-01 15:07           ` David Teigland
2020-09-01 16:15             ` heming.zhao [this message]
2020-09-01 11:43         ` Zdenek Kabelac

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