Il 13-06-2019 18:05 Ilia Zykov ha scritto:
Hello.
Tell me please, how can I get the maximum address used by a virtual
disk
(disk created with -V VirtualSize). I have several large virtual disks,
but they use only a small part at the beginning of the disk. For
example:
# lvs
LV VG Attr LSize Pool Origin Data%
mylvm CVG Vwi-aot--- 100,00g fastheap 7,13
Please advise me how to determine from which address the virtual disk
did not allocate real disk space? And all the data read from addresses
greater than this address will be exactly zeros. Or maybe, how can I
get
map of the used chunks of disk?
Thanks.
Maybe thin_dump[1] can help you?
Regards.
[1] https://linux.die.net/man/8/thin_dump
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