From: Sreyan Chakravarty <sreyan32@gmail.com>
To: LVM general discussion and development <linux-lvm@redhat.com>
Subject: [linux-lvm] What is the use of thin snapshots if the external origin cannot be set to writable ?
Date: Sat, 21 Nov 2020 08:40:44 +0530 [thread overview]
Message-ID: <CAMaziXsY6vpQdD+QQzW_1Km+Ltf41tz0G1WG5xAUiMARFWHoyw@mail.gmail.com> (raw)
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I am looking into thin snapshots since the older COW snapshots delay my
boot enormously.
My normal root fs is on a normal "non-thin" volume.
So to make a snapshot I have boot into a live cd environment then set my
root fs volume to read-only and then set it to inactive.
Commands:
sudo lvchange -pr vgfedora/fedora
sudo lvchange -an vgfedora/fedora
Now I create the thin snapshot using lvcreate, after that I need to restore
my root LVS to its original state:
sudo lvchange -ay vgfedora/fedora
sudo lvchange -prw vgfedora/fedora
This fails with:
Command on LV vgfedora/fedora uses options that are invalid
with LV parameters: lv_is_external_origin.
I mean what is the point of creating a snapshot if I can't change my
original volume ?
Is there some sort of resolution ?
--
Regards,
Sreyan Chakravarty
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next reply other threads:[~2020-11-21 3:11 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-21 3:10 Sreyan Chakravarty [this message]
2020-11-23 12:44 ` [linux-lvm] What is the use of thin snapshots if the external origin cannot be set to writable ? Gionatan Danti
2020-11-23 13:04 ` Bryn M. Reeves
2020-11-24 11:59 ` Sreyan Chakravarty
2020-11-25 8:46 ` Sreyan Chakravarty
2020-11-25 12:38 ` Bryn M. Reeves
2020-11-25 15:31 ` Sreyan Chakravarty
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