[linux-lvm] LVM cachepool inconsistency after power event

[Krzysztof Chojnowski]

On Tue, Oct 5, 2021 at 06:35 AM Ming-Hung Tsai <mingnus at gmail.com> wrote:
>Could you help run cache_check independently, to see the error messages? Thanks.
>
># sudo lvchange -ay -f vg0/wdata_cachepool_cpool_cmeta
># sudo cache_check /dev/mapper/vg0-wdata_cachepool_cpool_cmeta
># sudo lvchange -an -f vg0/wdata_cachepool_cpool_cmeta

Thanks for your help, this is what I get:
$ sudo lvchange -ay -f vg0/wdata_cachepool_cpool_cmeta
Do you want to activate component LV in read-only mode? [y/n]: y
  Allowing activation of component LV.
$ sudo cache_check /dev/mapper/vg0-wdata_cachepool_cpool_cmeta
examining superblock
examining mapping array
  missing mappings [1, 0]:
    missing blocks
examining hint array
  missing mappings [1, 0]:
    missing blocks
examining discard bitset
$ echo $?
1
$ sudo lvchange -an -f vg0/wdata_cachepool_cpool_cmeta
$ sudo lvchange -ay   vg0/tpg1-wdata
  Check of pool vg0/wdata_cachepool_cpool failed (status:1). Manual
repair required!

Regards,
Krzysztof Chojnowski