[linux-lvm] LVM and RO device/partition(s)

Pascal patatetom at gmail.com
Sun Mar 19 10:27:32 UTC 2023


the bio_check_ro function of the blk-core.c source file of the Linux kernel
refers to LVM :

how does LVM currently behave when faced with a device marked as readonly ?
does it automatically switch itself in readonly mode?

according to some tests carried out in a virtual machine, it seems that it
doesn't and that LVM modifies the disk/partition(s) even though they are
all readonly (chmod 444 && blockdev --setro).

regards, lacsaP.
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