Hey Manoli! glad to see you again, Στις Monday 18 May 2009 13:27:58 ο/η Manolis Kiagias έγραψε: > Achilleas Mantzios wrote: > > Hello, > > in advance sorry for the cross posting, it is just that freebsd-geom didnt > > seem that populated. > > I run 7.1-PRERELEASE, its a home server. > > today morning after a power failure, the rebuild my root gm0 failed on disk > > ad4. > > The messages were: > > > > May 18 08:02:02 panix kernel: ad4: WARNING - WRITE_DMA UDMA ICRC error > > (retrying request) LBA=268091264 > > May 18 08:02:08 panix kernel: drm0: <Intel i865G GMCH> on vgapci0 > > May 18 08:02:08 panix kernel: info: [drm] AGP at 0xf0000000 128MB > > May 18 08:02:08 panix kernel: info: [drm] Initialized i915 1.5.0 20060119 > > May 18 08:02:08 panix kernel: drm0: [ITHREAD] > > May 18 08:02:08 panix kernel: ad4: FAILURE - device detached > > May 18 08:02:08 panix kernel: subdisk4: detached > > May 18 08:02:08 panix kernel: ad4: detached > > May 18 08:02:08 panix kernel: GEOM_MIRROR: Device gm0: provider ad4 > > disconnected. > > May 18 08:02:08 panix kernel: GEOM_MIRROR: Device gm0: rebuilding provider > > ad4 stopped. > > > > > > It looks to me you got a bad disk now. >
I certainly hope so, since there is nothing else i can do > > I read > > http://www.eztiger.org/2008/08/removing-and-re-adding-a-disk-in-gmirror/ > > hoping that the rebuld failure was temprary > > and so i tried to just run > > # gmirror forget gm0 > > # gmirror insert gm0 ad4 > > > > But the system responded (if i remember correctly) > > Unknown provider ad4. > > The system no longer could see ad4 being online. > > > > So i rebooted the system many times and had these results: > > -When having put offline ad4 (disconnected by hardware), the system booted > > ok. > > -When having both disks online the system responded consistently > > with: > > "GEOM_MIRROR: Cannot add disk ad6 to gm0 (error=22)." > > Which IMO is not very ok, since gm0 should add ad6 without problem, > > no matter if ad4 is online or not. > > -When having only ad4 online, then it simply cannot find gm0 at all. (kind > > of reasonable) > > > > So my only option is to have only ad6 online, with a current gmirror status: > > panix# gmirror status > > Name Status Components > > mirror/gm0 COMPLETE ad6 > > > > Anyone has an idea of how should i proceed (besides buying a UPS unit!) > > Is it meaningfull to go for a new Disk to replace current ad4? > > > > I'd recommend attaching the bad disk on its own to a system and perform > tests on it. Is the BIOS recognizing this properly? I would run hardware Yes, the BIOS recognizes it ok i suppose. > tests on it - either manufacturer ones, or stuff like > sysutils/smartmontools. You could also try installing FreeBSD on it and > see if it works. And probably use dd to clean all the contents, esp. > the partition table and the last sector where geom information is stored. > Thanx, lacking time i think i will try to use a brand new identical disk. > > Why is the presence of the supposed bad disk ad4, affecting gm0, > > when having already told gm0 to forget about ad4? > > > > The bad disk may be sending confusing signals to the bus / IDE > interface. I've had this once (although it was due to a bad cable). The > entire mirror would disappear suddenly. > > -- Achilleas Mantzios _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"