Kelly Martin <kellymar...@gmail.com> writes: > I just experienced a hard drive failure on one of my FreeBSD 7.2 > production servers with no backup! I am so mad at myself for not > backing up!! Now it's a salvage operation. Here are the type of errors > I was getting on the console, over-and-over: > > ad4: TIMEOUT - WRITE_DMA48 retrying (0 retries left) LBA=441633503 > ad4: WARNING - SETFEATURES ENABLE RCACHE taskqueue timeout - > completing request directly > ad4: WARNING - SETFEATURES ENABLE WCACHE taskqueue timeout - > completing request directly > ad4: WARNING - SET_MULTI taskqueue timeout - completing request directly > ad4: FAILURE - WRITE_DMA48 timed out LBA=441633375 > g_vgs_done():ad4s1f[WRITE(offset=216338284544, length=16384)]error = 5 > > I could still login to the machine (after an eternity) but got lots of > read/write errors along the way. The offset shown in the errors kept > changing, so I thought it was a hardware eSATA controller issue > instead of a bad sector on the drive - I replaced the motherboard, > but the problem persisted. So I bought a new hard drive and have > re-installed FreeBSD 7.2 on it. I'd like to plug in the old hard drive > today, mount it and salvage as much as I can... especially the > database files, config files, etc. > > My question: what kind of checks and/or repair tools should I run on > the damaged drive after it's mounted? Or should I mount it as > read-only and start backing it up? I am hoping most of my data is > still there, but also don't want to damage it further. I desperately > need to salvage the data, what do the kind people on this list > recommend?
First, try copying the entire disk, *without* mounting it. Use dd(1) to get a copy of the whole disk. I believe that "conv=noerror" may be necessary. -- Lowell Gilbert, embedded/networking software engineer, Boston area http://be-well.ilk.org/~lowell/ _______________________________________________ email@example.com mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"