Date: Fri, 6 Nov 2015 00:29:59 +0500 From: "Eugene M. Zheganin" <emz@norma.perm.ru> To: freebsd-stable@freebsd.org Subject: unable to boot a healthy zfs pool: all block copies unavailable Message-ID: <563BAE37.2090205@norma.perm.ru>
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Hi. Today one of my zfs pool disks dies, I was unable to change it on the fly (video board was blocking it) so I powered off, changed disk (not in root pool) and all of a sudden I realized that i cannot boot: ZFS: i/o error - all block copies unavailable ZFS: can't read MOS of pool zroot gptzfsboot: failed to mount default pool zroot It was first reboot since October, 16th, when I installed recent -STABLE and upgraded zpool. I was pretty confident that I've installed loaders, but I tried to reinstall them - no luck. Then I built today's STABLE and installed loaders from it - same issue. I've even tried to install less recent loaders from a server nearby - same issue. Two years ago I have encountered similar (if not identical) issue: https://lists.freebsd.org/pipermail/freebsd-stable/2013-December/076317.html The main difference was it was i386. Now I have an amd64 machine. I even updated it's BIOS, and I still cannot boot. Zpool is fine: I'm writing this message from this exact machine, however, I had to boot it from today -STABLE from an USB stick. I've read about the zfsboottest utility and tried it on my unbootable pool - after the bried info about it (traated as healthy) it said "OK". I guess no errors were encountered. So... what can I do to restore the ability to boot from my root pool ? Thanks. Eugene. P.S. Some info about the pool below. let me know if it's not enough - I'll post more. [root@bsdrookie:/]# zpool list NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT zroot 1,79T 690G 1,12T - 14% 37% 1.00x ONLINE - [root@bsdrookie:/]# zfs list NAME USED AVAIL REFER MOUNTPOINT zroot 704G 1,05T 2,07G legacy zroot/crypted 516G 1,06T 502G - zroot/jails 2,16G 1,05T 2,03G /usr/local/public/jails zroot/tmp 223M 1,05T 223M /tmp zroot/usr 182G 1,05T 17,0G /usr zroot/usr/home 145G 1,05T 145G /usr/home zroot/usr/ports 17,0G 1,05T 2,79G /usr/ports zroot/usr/ports/distfiles 14,3G 1,05T 14,3G /usr/ports/distfiles zroot/usr/ports/packages 384K 1,05T 384K /usr/ports/packages zroot/usr/public 2,11G 1,05T 2,11G /usr/local/public zroot/usr/src 1,56G 1,05T 1,56G /usr/src zroot/var 1,19G 1,05T 83,7M /var zroot/var/crash 992M 1,05T 992M /var/crash zroot/var/db 113M 1,05T 39,7M /var/db zroot/var/db/pkg 73,1M 1,05T 73,1M /var/db/pkg zroot/var/empty 144K 1,05T 144K /var/empty zroot/var/log 2,53M 1,05T 2,53M /var/log zroot/var/mail 272K 1,05T 272K /var/mail zroot/var/run 520K 1,05T 520K /var/run zroot/var/tmp 22,7M 1,05T 22,7M /var/tmp
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