From: Mikhail Morfikov <mmorfikov@gmail.com>
To: linux-lvm@lists.linux.dev
Subject: Should issue_discards be enabled when e2scrub is used on an SSD?
Date: Fri, 29 Dec 2023 01:48:00 +0100 [thread overview]
Message-ID: <5ccac2f3-f554-47fe-bec9-d74b08e85e5e@gmail.com> (raw)
I've got the following setup: LUKSv2+LVM on an SSD drive, and I have trim/discad enabled
for encrypted container. I also use e2scrub for Online ext4 Metadata Check which uses a 4
GiB LVM snapshot. I currently have 10 logical volumes, which are periodically (once a week)
scanned for errors. I've got a question concerning the *issue_discards* option that can be
specified in the /etc/lvm/lvm.conf file. What actually happens when this option is enabled
and the LVM snapshot is removed after fsck finishes its job? Will the whole 4 GiB be erased
on the flash? Is it safe to enable this option in such case, or is it better to leave it
disabled?
next reply other threads:[~2023-12-29 0:48 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-29 0:48 Mikhail Morfikov [this message]
2024-01-02 10:41 ` Should issue_discards be enabled when e2scrub is used on an SSD? Zdenek Kabelac
2024-01-02 11:13 ` Mikhail Morfikov
2024-01-02 11:45 ` Zdenek Kabelac
2024-01-02 12:01 ` Mikhail Morfikov
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