Basically, it is complaining that there aren't enough disks to read the pool metadata. This would suggest that in your 3-disk RAID-Z config, either two disks are missing, or one disk is missing *and* another disk is damaged -- due to prior failed writes, perhaps.
(I know there's at least one disk missing because the failure mode is errno 6, which is EXNIO.) Can you tell from /var/adm/messages or fmdump whether there write errors to multiple disks, or to just one? Jeff On Tue, Sep 18, 2007 at 05:26:16PM -0700, Geoffroy Doucet wrote: > I have a raid-z zfs filesystem with 3 disks. The disk was starting have read > and write errors. > > The disks was so bad that I started to have trans_err. The server lock up and > the server was reset. Then now when trying to import the pool the system > panic. > > I installed the last Recommend on my Solaris U3 and also install the last > Kernel patch (120011-14). > > But still when trying to do zpool import <pool> it panic. > > I also dd the disk and tested on another server with OpenSolaris B72 and > still the same thing. Here is the panic backtrace: > > Stack Backtrace > ----------------- > vpanic() > assfail3+0xb9(fffffffff7dde5f0, 6, fffffffff7dde840, 0, fffffffff7dde820, 153) > space_map_load+0x2ef(ffffff008f1290b8, ffffffffc00fc5b0, 1, ffffff008f128d88, > ffffff008dd58ab0) > metaslab_activate+0x66(ffffff008f128d80, 8000000000000000) > metaslab_group_alloc+0x24e(ffffff008f46bcc0, 400, 3fd0f1, 32dc18000, > ffffff008fbeaa80, 0) > metaslab_alloc_dva+0x192(ffffff008f2d1a80, ffffff008f235730, 200, > ffffff008fbeaa80, 0, 0) > metaslab_alloc+0x82(ffffff008f2d1a80, ffffff008f235730, 200, > ffffff008fbeaa80, 2 > , 3fd0f1) > zio_dva_allocate+0x68(ffffff008f722790) > zio_next_stage+0xb3(ffffff008f722790) > zio_checksum_generate+0x6e(ffffff008f722790) > zio_next_stage+0xb3(ffffff008f722790) > zio_write_compress+0x239(ffffff008f722790) > zio_next_stage+0xb3(ffffff008f722790) > zio_wait_for_children+0x5d(ffffff008f722790, 1, ffffff008f7229e0) > zio_wait_children_ready+0x20(ffffff008f722790) > zio_next_stage_async+0xbb(ffffff008f722790) > zio_nowait+0x11(ffffff008f722790) > dmu_objset_sync+0x196(ffffff008e4e5000, ffffff008f722a10, ffffff008f260a80) > dsl_dataset_sync+0x5d(ffffff008df47e00, ffffff008f722a10, ffffff008f260a80) > dsl_pool_sync+0xb5(ffffff00882fb800, 3fd0f1) > spa_sync+0x1c5(ffffff008f2d1a80, 3fd0f1) > txg_sync_thread+0x19a(ffffff00882fb800) > thread_start+8() > > > > And here is the panic message buf: > panic[cpu0]/thread=ffffff0001ba2c80: > assertion failed: dmu_read(os, smo->smo_object, offset, size, entry_map) == 0 > (0 > x6 == 0x0), file: ../../common/fs/zfs/space_map.c, line: 339 > > > ffffff0001ba24f0 genunix:assfail3+b9 () > ffffff0001ba2590 zfs:space_map_load+2ef () > ffffff0001ba25d0 zfs:metaslab_activate+66 () > ffffff0001ba2690 zfs:metaslab_group_alloc+24e () > ffffff0001ba2760 zfs:metaslab_alloc_dva+192 () > ffffff0001ba2800 zfs:metaslab_alloc+82 () > ffffff0001ba2850 zfs:zio_dva_allocate+68 () > ffffff0001ba2870 zfs:zio_next_stage+b3 () > ffffff0001ba28a0 zfs:zio_checksum_generate+6e () > ffffff0001ba28c0 zfs:zio_next_stage+b3 () > ffffff0001ba2930 zfs:zio_write_compress+239 () > ffffff0001ba2950 zfs:zio_next_stage+b3 () > ffffff0001ba29a0 zfs:zio_wait_for_children+5d () > ffffff0001ba29c0 zfs:zio_wait_children_ready+20 () > ffffff0001ba29e0 zfs:zio_next_stage_async+bb () > ffffff0001ba2a00 zfs:zio_nowait+11 () > ffffff0001ba2a80 zfs:dmu_objset_sync+196 () > ffffff0001ba2ad0 zfs:dsl_dataset_sync+5d () > ffffff0001ba2b40 zfs:dsl_pool_sync+b5 () > ffffff0001ba2bd0 zfs:spa_sync+1c5 () > ffffff0001ba2c60 zfs:txg_sync_thread+19a () > ffffff0001ba2c70 unix:thread_start+8 () > > syncing file systems... > > > Is there a way to restore the data? Is there a way to "fsck" the zpool, and > correct the error manually? > > > This message posted from opensolaris.org > _______________________________________________ > 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
