On Jul 6, 2010, at 6:30 PM, Brian Kolaci wrote: > Well, I see no takers or even a hint... > > I've been playing with zdb to try to examine the pool, but I get: > > # zdb -b pool4_green > zdb: can't open pool4_green: Bad exchange descriptor > > # zdb -d pool4_green > zdb: can't open pool4_green: Bad exchange descriptor > > So I'm not sure how to debug using zdb. Is there something better or > something else I should be looking at? > The disks are all there, all online. How can I at least rollback to the last > consistent bit of data on there? > Or is all hope lost and I lost over 600GB of data? > > The worst part is that there are no errors in the logs and it just > "disappeared" without a trace. > The only logs are from subsequent reboots where it says a ZFS pool failed to > open. > > It does not give me a warm & fuzzy about using ZFS as I've relied on it > heavily in the past 5 years. > > Any advice would be well appreciated...
You can download build 134 LiveCD boot off it and try 'zpool import -nfF pool4_green' for a start. regards victor > On 7/2/2010 3:01 AM, Brian Kolaci wrote: >> I've recently acquired some storage and have been trying to copy data from a >> remote data center to hold backup data. The copies had been going for >> weeks, with about 600GB transferred so far, and then I noticed the >> throughput on the router stopped. I see a pool disappeared. >> >> # zpool status -x >> >> pool: pool4_green >> state: FAULTED >> status: The pool metadata is corrupted and the pool cannot be opened. >> action: Destroy and re-create the pool from a backup source. >> see: http://www.sun.com/msg/ZFS-8000-72 >> scrub: none requested >> config: >> >> NAME STATE READ WRITE CKSUM >> pool4_green FAULTED 0 0 1 corrupted data >> raidz2 ONLINE 0 0 6 >> c10t0d0 ONLINE 0 0 0 >> c10t1d0 ONLINE 0 0 0 >> c10t2d0 ONLINE 0 0 0 >> c10t3d0 ONLINE 0 0 0 >> c10t4d0 ONLINE 0 0 0 >> c10t5d0 ONLINE 0 0 0 >> c10t6d0 ONLINE 0 0 0 >> >> I powered down the system and all the disk systems and powered up fresh. >> I tried to clear the error: >> >> #zpool clear pool4_green >> internal error: Bad exchange descriptor >> Abort (core dumped) >> >> So then I took a look with zdb: >> >> #zdb -vvv pool4_green >> version=15 >> name='pool4_green' >> state=0 >> txg=83 >> pool_guid=3115817837859301858 >> hostid=237914636 >> hostname='galaxy' >> vdev_tree >> type='root' >> id=0 >> guid=3115817837859301858 >> children[0] >> type='raidz' >> id=0 >> guid=10261633106033684483 >> nparity=2 >> metaslab_array=24 >> metaslab_shift=36 >> ashift=9 >> asize=6997481881600 >> is_log=0 >> children[0] >> type='disk' >> id=0 >> guid=11313548069045029894 >> path='/dev/dsk/c10t0d0s0' >> devid='id1,s...@n60026b9040e26100139d8514065a1d67/a' >> >> phys_path='/p...@0,0/pci8086,3...@4/pci1028,1...@0/s...@0,0:a' >> whole_disk=1 >> children[1] >> type='disk' >> id=1 >> guid=5547727760941401848 >> path='/dev/dsk/c10t1d0s0' >> devid='id1,s...@n60026b9040e26100139d851d06ec511d/a' >> >> phys_path='/p...@0,0/pci8086,3...@4/pci1028,1...@0/s...@1,0:a' >> whole_disk=1 >> children[2] >> type='disk' >> id=2 >> guid=8407102896612298450 >> path='/dev/dsk/c10t2d0s0' >> devid='id1,s...@n60026b9040e26100139d85260770c1bf/a' >> >> phys_path='/p...@0,0/pci8086,3...@4/pci1028,1...@0/s...@2,0:a' >> whole_disk=1 >> children[3] >> type='disk' >> id=3 >> guid=17509238716791782209 >> path='/dev/dsk/c10t3d0s0' >> devid='id1,s...@n60026b9040e26100139d852f07fea314/a' >> >> phys_path='/p...@0,0/pci8086,3...@4/pci1028,1...@0/s...@3,0:a' >> whole_disk=1 >> children[4] >> type='disk' >> id=4 >> guid=18419120996062075464 >> path='/dev/dsk/c10t4d0s0' >> devid='id1,s...@n60026b9040e26100139d8537086c271f/a' >> >> phys_path='/p...@0,0/pci8086,3...@4/pci1028,1...@0/s...@4,0:a' >> whole_disk=1 >> children[5] >> type='disk' >> id=5 >> guid=8308368067368943006 >> path='/dev/dsk/c10t5d0s0' >> devid='id1,s...@n60026b9040e26100139d85440934f640/a' >> >> phys_path='/p...@0,0/pci8086,3...@4/pci1028,1...@0/s...@5,0:a' >> whole_disk=1 >> children[6] >> type='disk' >> id=6 >> guid=14740659507803921957 >> path='/dev/dsk/c10t6d0s0' >> devid='id1,s...@n60026b9040e26100139d854a09957d56/a' >> >> phys_path='/p...@0,0/pci8086,3...@4/pci1028,1...@0/s...@6,0:a' >> whole_disk=1 >> zdb: can't open pool4_green: Bad exchange descriptor >> >> >> So what is this "Bad exchange descriptor" and do I have a prayer on getting >> my data back? >> >> Thanks, >> >> Brian > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
