Your message dated Tue, 15 Sep 2020 19:58:03 -0700 with message-id <CAFHYt55osjXm0AEcGyMvcRvCud=deVvosL6UhbLiv=-xzgc...@mail.gmail.com> and subject line Re: mdadm: update=metadata with 4TB disks result in different sizes and superblock versions has caused the Debian Bug report #809447, regarding mdadm: update=metadata with 4TB disks result in different sizes and superblock versions to be marked as done.
This means that you claim that the problem has been dealt with. If this is not the case it is now your responsibility to reopen the Bug report if necessary, and/or fix the problem forthwith. (NB: If you are a system administrator and have no idea what this message is talking about, this may indicate a serious mail system misconfiguration somewhere. Please contact [email protected] immediately.) -- 809447: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=809447 Debian Bug Tracking System Contact [email protected] with problems
--- Begin Message ---Package: mdadm Version: 3.3.2-5 Severity: normal Dear Maintainer, *** Reporter, please consider answering these questions, where appropriate *** * What led up to the situation? * What exactly did you do (or not do) that was effective (or ineffective)? * What was the outcome of this action? * What outcome did you expect instead? *** End of the template - remove these template lines *** -- Package-specific info: IMPORTANT: please do not forget to include all relevant system information with this bug report. You could run /usr/share/bug/mdadm/script 3>&1 as root and attach or include the output. -- System Information: Debian Release: 8.0 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 3.16.0-4-amd64 (SMP w/4 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: sysvinit (via /sbin/init) Versions of packages mdadm depends on: ii debconf [debconf-2.0] 1.5.56 ii initscripts 2.88dsf-59 ii libc6 2.19-18+deb8u1 ii lsb-base 4.1+Debian13+nmu1 ii udev 215+12+betsy Versions of packages mdadm recommends: pn default-mta | mail-transport-agent <none> ii kmod 18-3 ii module-init-tools 18-3 mdadm suggests no packages. -- debconf information: mdadm/start_daemon: true * mdadm/initrdstart: all mdadm/initrdstart_msg_errconf: mdadm/autocheck: true mdadm/initrdstart_msg_errblock: mdadm/initrdstart_msg_intro: mdadm/initrdstart_msg_errmd: mdadm/initrdstart_notinconf: false mdadm/initrdstart_msg_errexist: mdadm/mail_to: root ################################################################### here we go: this is a raid 1 (/dev/md3) with 2 8TB disks (/dev/sdb1 and /dev/sdc1) with original superblock 0.90 after mdadm -A --update=metadata /dev/md3 /dev/sdb1 /dev/sdc1 the size has shrinked and the filesystem no longer working. Starting with -e 0 and the raid can be used with 4TB, but no metadate update possible any more ralix ralph # mdadm -Evvvvs /dev/sdb1: Magic : a92b4efc Version : 1.0 Feature Map : 0x0 Array UUID : 9d3b4c33:07aaf76e:6aefa58e:ac893c19 Name : 3 Creation Time : Sat May 9 22:58:19 2009 Raid Level : raid1 Raid Devices : 2 Avail Dev Size : 4294967294 (2048.00 GiB 2199.02 GB) Array Size : 2147483647 (2048.00 GiB 2199.02 GB) Super Offset : 15624998896 sectors Unused Space : before=0 sectors, after=11330031602 sectors State : clean Device UUID : fe89c915:918a94a0:78eeecb7:78981a5d Update Time : Wed Dec 30 18:28:22 2015 Checksum : 295dc1d - correct Events : 0 Device Role : Active device 0 Array State : AA ('A' == active, '.' == missing, 'R' == replacing) /dev/sdc1: Magic : a92b4efc Version : 1.0 Feature Map : 0x0 Array UUID : 9d3b4c33:07aaf76e:6aefa58e:ac893c19 Name : 3 Creation Time : Sat May 9 22:58:19 2009 Raid Level : raid1 Raid Devices : 2 Avail Dev Size : 4294967294 (2048.00 GiB 2199.02 GB) Array Size : 2147483647 (2048.00 GiB 2199.02 GB) Super Offset : 15624998896 sectors Unused Space : before=0 sectors, after=11330031602 sectors State : clean Device UUID : 34500844:ab3f3925:ca7aae3b:9bd2e859 Update Time : Wed Dec 30 18:28:22 2015 Checksum : 36091de2 - correct Events : 0 Device Role : Active device 1 Array State : AA ('A' == active, '.' == missing, 'R' == replacing) ralix ralph # ralix ralph # mdadm -D /dev/md3 /dev/md3: Version : 0.90 Creation Time : Sat May 9 22:58:18 2009 Raid Level : raid1 Array Size : 4294967295 (4096.00 GiB 4398.05 GB) Used Dev Size : -1 Raid Devices : 2 Total Devices : 2 Preferred Minor : 3 Persistence : Superblock is persistent Update Time : Wed Dec 30 18:31:31 2015 State : clean Active Devices : 2 Working Devices : 2 Failed Devices : 0 Spare Devices : 0 UUID : 9d3b4c33:07aaf76e:6aefa58e:ac893c19 Events : 0.447841 Number Major Minor RaidDevice State 0 8 17 0 active sync /dev/sdb1 1 8 33 1 active sync /dev/sdc1 ralix ralph # ralix ralph # umount /mnt/test ralix ralph # mdadm --stop /dev/md3 mdadm: stopped /dev/md3 ralix ralph # mdadm -A /dev/md3 /dev/sdb1 /dev/sdc1 mdadm: /dev/md3 has been started with 2 drives. ralix ralph # mount /dev/md3 /mnt/test mount: wrong fs type, bad option, bad superblock on /dev/md3, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so. ralix ralph # mdadm -D /dev/md3 /dev/md3: Version : 1.0 Creation Time : Sat May 9 22:58:19 2009 Raid Level : raid1 Array Size : 2147483647 (2048.00 GiB 2199.02 GB) Used Dev Size : 2147483647 (2048.00 GiB 2199.02 GB) Raid Devices : 2 Total Devices : 2 Persistence : Superblock is persistent Update Time : Wed Dec 30 18:28:22 2015 State : clean Active Devices : 2 Working Devices : 2 Failed Devices : 0 Spare Devices : 0 Name : 3 UUID : 9d3b4c33:07aaf76e:6aefa58e:ac893c19 Events : 0 Number Major Minor RaidDevice State 0 8 17 0 active sync /dev/sdb1 1 8 33 1 active sync /dev/sdc1 ralix ralph # mdadm --stop /dev/md3 mdadm: stopped /dev/md3 ralix ralph # mdadm -A -e 0 /dev/md3 /dev/sdb1 /dev/sdc1 mdadm: /dev/md3 has been started with 2 drives. ralix ralph # mdadm -D /dev/md3 /dev/md3: Version : 0.90 Creation Time : Sat May 9 22:58:18 2009 Raid Level : raid1 Array Size : 4294967295 (4096.00 GiB 4398.05 GB) Used Dev Size : -1 Raid Devices : 2 Total Devices : 2 Preferred Minor : 3 Persistence : Superblock is persistent Update Time : Wed Dec 30 18:39:37 2015 State : clean Active Devices : 2 Working Devices : 2 Failed Devices : 0 Spare Devices : 0 UUID : 9d3b4c33:07aaf76e:6aefa58e:ac893c19 Events : 0.447841 Number Major Minor RaidDevice State 0 8 17 0 active sync /dev/sdb1 1 8 33 1 active sync /dev/sdc1 ralix ralph # mount /dev/md3 /mnt/test
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--- Begin Message ---Hi Ralph, > - info->component_size = sb->size*2; > + info->component_size = sb->size; > + info->component_size *= 2; This change was applied upstream and is found in the 4.1 source code (line 431 in super0.c). Closing this bug. Please reopen if the bug was closed in error. Kind regards Felix Lechner
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