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From: Zdenek Kabelac <zkabelac@redhat.com>
To: "Tomas Dalebjörk" <tomas.dalebjork@gmail.com>
Cc: LVM general discussion and development <linux-lvm@redhat.com>
Subject: Re: [linux-lvm] exposing snapshot block device
Date: Mon, 7 Sep 2020 19:50:35 +0200	[thread overview]
Message-ID: <643c43ad-0814-18a7-bb60-439adb4c6514@redhat.com> (raw)
In-Reply-To: <EEEA1F5E-B6AC-47CD-89BD-C4AF592749F2@gmail.com>

Dne 07. 09. 20 v 19:37 Tomas Dalebjörk napsal(a):
> thanks
> 
> ok
>   vgsplit/merge instead
> and after that lvconvert-s
> 
> yes, I am aware of the issues with corruption
> but if the cow device has all data, than no corruption will happen, right?
> 
> if COW has a copy of all blocks
> than a lvconvert —merge, or mount of the snapshot volume will be without issues

If the 'COW' has all the data - why do you need then snapshot ?
Why not travel whole LV instead of snapshot ?

Also - nowdays this old (so called 'thick') snapshot is really slow compared 
with thin-provisioning - might be good if you check what kind of features
you can gain/loose if you would have switched to thin-pool
(clearly whole thin-pool (both data & metadata) would need to travel between 
your VGs.)

Regards

Zdenek

  reply	other threads:[~2020-09-07 17:50 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-22 10:47 [linux-lvm] exposing snapshot block device Dalebjörk, Tomas
2019-10-22 13:57 ` Zdenek Kabelac
2019-10-22 15:29   ` Dalebjörk, Tomas
2019-10-22 15:36     ` Zdenek Kabelac
2019-10-22 16:13       ` Dalebjörk, Tomas
2019-10-23 10:26         ` Zdenek Kabelac
2019-10-23 10:56           ` Tomas Dalebjörk
2019-10-22 16:15       ` Stuart D. Gathman
2019-10-22 17:02         ` Tomas Dalebjörk
2019-10-22 21:38         ` Gionatan Danti
2019-10-22 22:53           ` Stuart D. Gathman
2019-10-23  6:58             ` Gionatan Danti
2019-10-23 10:06               ` Tomas Dalebjörk
2019-10-23 10:12             ` Zdenek Kabelac
2019-10-23 10:46         ` Zdenek Kabelac
2019-10-23 11:08           ` Gionatan Danti
2019-10-23 11:24             ` Tomas Dalebjörk
2019-10-23 11:26               ` Tomas Dalebjörk
2019-10-24 16:01               ` Zdenek Kabelac
2019-10-25 16:31                 ` Tomas Dalebjörk
2019-11-04  5:54                   ` Tomas Dalebjörk
2019-11-04 10:07                     ` Zdenek Kabelac
2019-11-04 14:40                       ` Tomas Dalebjörk
2019-11-04 15:04                         ` Zdenek Kabelac
2019-11-04 17:28                           ` Tomas Dalebjörk
2019-11-05 16:24                             ` Zdenek Kabelac
2019-11-05 16:40                         ` Mikulas Patocka
2019-11-05 20:56                           ` Tomas Dalebjörk
2019-11-06  9:22                             ` Zdenek Kabelac
2019-11-07 16:54                             ` Mikulas Patocka
2019-11-07 17:29                               ` Tomas Dalebjörk
2020-09-04 12:09                                 ` Tomas Dalebjörk
2020-09-04 12:37                                   ` Zdenek Kabelac
2020-09-07 13:09                                   ` Mikulas Patocka
2020-09-07 14:14                                     ` Dalebjörk, Tomas
2020-09-07 14:17                                       ` Zdenek Kabelac
2020-09-07 16:34                                         ` Tomas Dalebjörk
2020-09-07 16:42                                           ` Zdenek Kabelac
2020-09-07 17:37                                             ` Tomas Dalebjörk
2020-09-07 17:50                                               ` Zdenek Kabelac [this message]
2020-09-08 12:32                                                 ` Dalebjörk, Tomas
2020-09-07 19:56                                             ` Tomas Dalebjörk
2020-09-07 20:22                                               ` Tomas Dalebjörk
2020-09-07 21:02                                               ` Tomas Dalebjörk
2019-10-23 12:12             ` Ilia Zykov
2019-10-23 12:20             ` Ilia Zykov
2019-10-23 13:05               ` Zdenek Kabelac
2019-10-23 14:40                 ` Gionatan Danti
2019-10-23 15:46                   ` Ilia Zykov
2019-10-23 12:59             ` Zdenek Kabelac
2019-10-23 14:37               ` Gionatan Danti
2019-10-23 15:37                 ` Zdenek Kabelac
2019-10-23 17:16                   ` Gionatan Danti

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