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storage: lvm: expand on description of saferemove option

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mentioning why zeroing-out might be necessary.

Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
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Fiona Ebner 2023-12-07 17:10:38 +01:00 committed by Fabian Grünbichler
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commit 8f40162150
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pve-storage-lvm.adoc
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@ -38,7 +38,10 @@ on a remote iSCSI server.
`saferemove`::
Zero-out data when removing LVs. When removing a volume, this makes
sure that all data gets erased.
sure that all data gets erased and cannot be accessed by other LVs
created later (which happen to be assigned the same physical extents).
This is a costly operation, but may be required as a security measure
in certain environments.
`saferemove_throughput`::