Date: Thu, 22 Feb 2018 00:09:15 +0000 (UTC) From: Alexander Motin <mav@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-vendor@freebsd.org Subject: svn commit: r329766 - vendor-sys/illumos/dist/uts/common/fs/zfs vendor/illumos/dist/cmd/zdb Message-ID: <201802220009.w1M09FkI096715@repo.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: mav Date: Thu Feb 22 00:09:15 2018 New Revision: 329766 URL: https://svnweb.freebsd.org/changeset/base/329766 Log: 8962 zdb should work on non-idle pools illumos/illumos-gate@e144c4e6c90e7d4dccaad6db660ee42b6e7ba04f Currently `zdb` consistently fails to examine non-idle pools as it fails during the `spa_load()` process. The main problem seems to be that `spa_load_verify()` fails as can be seen below: $ sudo zdb -d -G dcenter zdb: can't open 'dcenter': I/O error ZFS_DBGMSG(zdb): spa_open_common: opening dcenter spa_load(dcenter): LOADING disk vdev '/dev/dsk/c4t11d0s0': best uberblock found for spa dcenter. txg 40824950 spa_load(dcenter): using uberblock with txg=40824950 spa_load(dcenter): UNLOADING spa_load(dcenter): RELOADING spa_load(dcenter): LOADING disk vdev '/dev/dsk/c3t10d0s0': best uberblock found for spa dcenter. txg 40824952 spa_load(dcenter): using uberblock with txg=40824952 spa_load(dcenter): FAILED: spa_load_verify failed [error=5] spa_load(dcenter): UNLOADING This change makes `spa_load_verify()` a dryrun when ran from `zdb`. This is done by creating a global flag in zfs and then setting it in `zdb`. Reviewed by: George Wilson <george.wilson@delphix.com> Reviewed by: Matthew Ahrens <mahrens@delphix.com> Reviewed by: Andy Stormont <astormont@racktopsystems.com> Approved by: Dan McDonald <danmcd@joyent.com> Author: Pavel Zakharov <pavel.zakharov@delphix.com> Modified: vendor-sys/illumos/dist/uts/common/fs/zfs/spa.c Changes in other areas also in this revision: Modified: vendor/illumos/dist/cmd/zdb/zdb.c Modified: vendor-sys/illumos/dist/uts/common/fs/zfs/spa.c ============================================================================== --- vendor-sys/illumos/dist/uts/common/fs/zfs/spa.c Thu Feb 22 00:03:14 2018 (r329765) +++ vendor-sys/illumos/dist/uts/common/fs/zfs/spa.c Thu Feb 22 00:09:15 2018 (r329766) @@ -165,6 +165,12 @@ boolean_t spa_create_process = B_TRUE; /* no process = extern int zfs_sync_pass_deferred_free; /* + * Report any spa_load_verify errors found, but do not fail spa_load. + * This is used by zdb to analyze non-idle pools. + */ +boolean_t spa_load_verify_dryrun = B_FALSE; + +/* * This (illegal) pool name is used when temporarily importing a spa_t in order * to get the vdev stats associated with the imported devices. */ @@ -2014,8 +2020,15 @@ spa_load_verify(spa_t *spa) spa->spa_load_meta_errors = sle.sle_meta_count; spa->spa_load_data_errors = sle.sle_data_count; - if (!error && sle.sle_meta_count <= policy.zrp_maxmeta && - sle.sle_data_count <= policy.zrp_maxdata) { + if (sle.sle_meta_count != 0 || sle.sle_data_count != 0) { + spa_load_note(spa, "spa_load_verify found %llu metadata errors " + "and %llu data errors", (u_longlong_t)sle.sle_meta_count, + (u_longlong_t)sle.sle_data_count); + } + + if (spa_load_verify_dryrun || + (!error && sle.sle_meta_count <= policy.zrp_maxmeta && + sle.sle_data_count <= policy.zrp_maxdata)) { int64_t loss = 0; verify_ok = B_TRUE; @@ -2032,6 +2045,9 @@ spa_load_verify(spa_t *spa) } else { spa->spa_load_max_txg = spa->spa_uberblock.ub_txg; } + + if (spa_load_verify_dryrun) + return (0); if (error) { if (error != ENXIO && error != EIO)
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201802220009.w1M09FkI096715>