Salut! Am intampinat urmatoarea problema pe Slackware 14.1 (kernel 3.10.17 x64, mdadm 3.2.6) Se da un array RAID1 construit din sdb si sdc. La un moment dat sdb este inlocuit (hot) si se declanseaza un rebuild. Problema este ca daca se da reboot la calculator inainte de terminarea rebuildului, acesta nu mai este finalizat iar matricea apare clean (fara degraded/recovering). Evident datele sunt aiurea (corupte, sdb era hdd nou).
Nu reusesc sa gasesc nimic relevant cu exceptia unui bug mai vechi raportat in Fedora in 2012: https://bugzilla.redhat.com/show_bug.cgi?id=817039 Sugestia acolo a fost update la mdadm; al meu este deja mai nou si oricum mdadm este user-space, nu cred ca aici e problema. Pentru orice eventualitate am pus mdadm 3.3.4 dar problema persista. Am testat si cu partitii tip 0xfd, si pe un alt sistem tot Slackware 14.1 dar cu kernel x86; se intampla la fel. Tot ce tine de RAID este facut strict din Linux, nu am folosit eventuale facilitati de software-RAID ale placilor de baza. E vreo optiune care imi scapa sau este un bug pe undeva. In ultima varianta, in afara de kernel (si de mdadm pe care l-am actualizat) mai poate fi si alta componenta care sa afecteze functionarea RAID-ului? In fine, are cineva la indemana un sistem cu care sa testeze? Pasii ar fi: root@nxen:~# mdadm -C /dev/md127 --level=1 --raid-devices=2 /dev/sdb1 /dev/sdc1 dupa ce e in stare clean (fara resyncing) root@nxen:~# mdadm --manage /dev/md127 --fail /dev/sdc1 mdadm: set /dev/sdc1 faulty in /dev/md127 root@nxen:~# mdadm --manage /dev/md127 --remove failed mdadm: hot removed 8:33 from /dev/md127 root@nxen:~# mdadm --manage /dev/md127 -a /dev/sdc1 mdadm: added /dev/sdc1 si incepe reconstructia: root@nxen:~# mdadm --detail /dev/md127 root@nxen:~# mdadm --detail /dev/md127 /dev/md127: Version : 1.2 Creation Time : Wed Sep 30 14:48:05 2015 Raid Level : raid1 Array Size : 20955136 (19.98 GiB 21.46 GB) Used Dev Size : 20955136 (19.98 GiB 21.46 GB) Raid Devices : 2 Total Devices : 2 Persistence : Superblock is persistent Update Time : Wed Sep 30 14:55:52 2015 State : active, degraded, recovering Active Devices : 1 Working Devices : 2 Failed Devices : 0 Spare Devices : 1 Rebuild Status : 1% complete Name : nxen:127 (local to host nxen) UUID : 7589d8f8:0d8b5716:06e07bfa:28407522 Events : 23 Number Major Minor RaidDevice State 0 8 17 0 active sync /dev/sdb1 2 8 33 1 spare rebuilding /dev/sdc1 se da reboot si la verificare este totul "ca nou" root@nxen:~# mdadm --detail /dev/md127 /dev/md127: Version : 1.2 Creation Time : Wed Sep 30 14:48:05 2015 Raid Level : raid1 Array Size : 20955136 (19.98 GiB 21.46 GB) Used Dev Size : 20955136 (19.98 GiB 21.46 GB) Raid Devices : 2 Total Devices : 2 Persistence : Superblock is persistent Update Time : Wed Sep 30 14:56:35 2015 State : clean Active Devices : 2 Working Devices : 2 Failed Devices : 0 Spare Devices : 0 Name : nxen:127 (local to host nxen) UUID : 7589d8f8:0d8b5716:06e07bfa:28407522 Events : 26 Number Major Minor RaidDevice State 0 8 17 0 active sync /dev/sdb1 2 8 33 1 active sync /dev/sdc1 Multumesc, Mihai Gaitos _______________________________________________ RLUG mailing list RLUG@lists.lug.ro http://lists.lug.ro/mailman/listinfo/rlug
