"I/O error, dev sdb, sector 82830936 flags 0" would seem to suggest this is a hardware error (physically defective storage media sdb), have you ruled this out, yet?
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1862720 Title: kernel crash dump create error on Huawei server for 18.04.3 hwe-kernel Status in linux package in Ubuntu: Incomplete Bug description: coping data get io error [ OK ] Reached target Remote File Systems (Pre). [ OK ] Started Availability of block devices. [ 185.379378] kdump-tools[1695]: Starting kdump-tools: * running makedumpfile -c -d 31 /proc/vmcore /var/crash/201912310519/dump-incomplete Copying data :[ 421.979156] print_req_error: I/O error, dev sdb, sector 82830936 flags 0 [ 54.8 %] | [ 422.081318] bcache: bch_count_io_errors() sdb1: IO error on reading from cache, recovering. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1862720/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
