node_disk_reads_completed_total values do not update after startup. about node_exporter HOT 5 CLOSED

diskstats:

   7       0 loop0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
   7       1 loop1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
   7       2 loop2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
   7       3 loop3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
   7       4 loop4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
   7       5 loop5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
   7       6 loop6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
   7       7 loop7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
  11       0 sr0 33 0 208 31 0 0 0 0 0 44 31 0 0 0 0 0 0
 252       0 vda 10173 32 1327669 14671 25015510 527724 731129273 55901147 0 27993840 58678537 0 0 0 0 9824296 2762718
 252       1 vda1 65 0 520 18 0 0 0 0 0 36 18 0 0 0 0 0 0
 252       2 vda2 9987 32 1322477 14603 25015510 527724 731129273 55901147 0 27993796 55915751 0 0 0 0 0 0
 252      16 vdb 806 183 43482 1281 56134290 11741 498735894 27666840 0 111878904 31275653 0 0 0 0 46113207 3607532
 252      32 vdc 790 187 43604 1159 54668569 3928 448810064 23812358 0 110140360 27445146 0 0 0 0 46109776 3631628
 252      48 vdd 852 199 43270 1145 54489517 78246 448475615 23615421 0 110324052 27126148 0 0 0 0 46107387 3509581
 252      64 vde 766 196 42788 1548 54673031 3857 449279262 23192937 0 110054168 26606954 0 0 0 0 46106605 3412468
 252      80 vdf 799 188 43303 1768 55192104 3435 468071028 26591414 0 112296448 30315139 0 0 0 0 46104981 3721956
 252      96 vdg 813 184 43568 2383 54530339 6571 444307342 23472662 0 110153740 27030784 0 0 0 0 46104918 3555738
 253       0 dm-0 5788 0 251023 12532 121310993 0 2757679205 135254212 0 155769244 135266744 0 0 0 0 0 0

   7       0 loop0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
   7       1 loop1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
   7       2 loop2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
   7       3 loop3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
   7       4 loop4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
   7       5 loop5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
   7       6 loop6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
   7       7 loop7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
  11       0 sr0 33 0 208 31 0 0 0 0 0 44 31 0 0 0 0 0 0
 252       0 vda 10173 32 1327669 14671 25016160 527734 731151506 55903384 0 27994508 58680886 0 0 0 0 9824477 2762830
 252       1 vda1 65 0 520 18 0 0 0 0 0 36 18 0 0 0 0 0 0
 252       2 vda2 9987 32 1322477 14603 25016160 527734 731151506 55903384 0 27994464 55917988 0 0 0 0 0 0
 252      16 vdb 806 183 43482 1281 56140814 11741 498784086 27669575 0 111890376 31278973 0 0 0 0 46118789 3608116
 252      32 vdc 790 187 43604 1159 54675243 3928 448859576 23815577 0 110152048 27449097 0 0 0 0 46115354 3632360
 252      48 vdd 852 199 43270 1145 54496066 78248 448524079 23618388 0 110335576 27129847 0 0 0 0 46112963 3510314
 252      64 vde 766 196 42788 1548 54679678 3857 449328286 23195650 0 110065576 26610276 0 0 0 0 46112190 3413077
 252      80 vdf 799 188 43303 1768 55198587 3435 468118500 26594360 0 112307944 30318768 0 0 0 0 46110558 3722639
 252      96 vdg 813 184 43568 2383 54536979 6571 444355934 23475508 1 110165172 27034289 0 0 0 0 46110494 3556397
 253       0 dm-0 5788 0 251023 12532 121325358 0 2757970525 135268880 1 155785128 135281412 0 0 0 0 0 0

[Unit]
Description=Prometheus exporter for machine metrics
Documentation=https://github.com/prometheus/node_exporter

[Service]
Restart=on-failure
User=root
EnvironmentFile=/etc/default/node-exporter
ExecStart=/usr/sbin/node_exporter $ARGS
ExecReload=/bin/kill -HUP $MAINPID
TimeoutStopSec=20s
SendSIGKILL=no

[Install]
WantedBy=multi-user.target

ARGS=""