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Pavel Zakharov afd2f7b711 OpenZFS 8962 - zdb should work on non-idle pools 
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`.

Authored by: Pavel Zakharov <pavel.zakharov@delphix.com>
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>
Ported-by: Tim Chase <tim@chase2k.com>
Signed-off-by: Tim Chase <tim@chase2k.com>

OpenZFS-issue: https://illumos.org/issues/8962
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/180ad792
Closes #7459
2018-05-08 21:32:57 -07:00
.github Reduce codecov PR comments 2018-01-09 11:15:55 -08:00
cmd OpenZFS 8962 - zdb should work on non-idle pools 2018-05-08 21:32:57 -07:00
config Fix inverted check for --enable-pyzfs 2018-05-03 11:10:26 -07:00
contrib Prevent make distclean removing 0 sized file 2018-05-06 20:46:13 -07:00
etc systemd mount generator and tracking ZEDLET 2018-04-06 14:11:09 -07:00
include OpenZFS 8961 - SPA load/import should tell us why it failed 2018-05-08 21:30:10 -07:00
lib OpenZFS 9421, 9422 - zdb show possibly leaked objects 2018-05-04 10:50:24 -07:00
man OpenZFS 9256 - zfs send space estimation off by > 10% on some datasets 2018-05-08 08:59:24 -07:00
module OpenZFS 8962 - zdb should work on non-idle pools 2018-05-08 21:32:57 -07:00
rpm Fedora 28: Add BuildRequires: libtirpc-devel 2018-05-03 10:47:46 -07:00
scripts Adopt pyzfs from ClusterHQ 2018-05-01 10:33:35 -07:00
tests OpenZFS 9256 - zfs send space estimation off by > 10% on some datasets 2018-05-08 08:59:24 -07:00
udev Add kernel module auto-loading 2018-03-13 10:45:55 -07:00
.gitignore Add configure option to enable gcov analysis 2017-09-15 10:24:13 -07:00
.gitmodules Add zimport.sh compatibility test script 2014-02-21 12:10:31 -08:00
.travis.yml Add .travis.yml 2017-11-13 09:18:18 -08:00
AUTHORS Add a missing > to AUTHORS 2014-09-02 14:18:53 -07:00
autogen.sh build: do not call boilerplate ourself 2013-04-02 10:55:20 -07:00
configure.ac Adopt pyzfs from ClusterHQ 2018-05-01 10:33:35 -07:00
copy-builtin Fix copy-builtin to work with ASAN patch 2018-01-12 09:39:36 -08:00
COPYRIGHT Encryption patch follow-up 2017-10-11 16:54:48 -04:00
DISCLAIMER Fix minor typos and update marketing copy. 2013-03-21 12:51:06 -07:00
Makefile.am Allow make checkstyle and paxscript in build dir 2018-02-21 12:35:59 -08:00
META Tag zfs-0.7.0 2017-07-26 10:13:25 -07:00
OPENSOLARIS.LICENSE Add CDDL license file 2008-12-01 14:49:34 -08:00
README.markdown Add scan.coverity.com badge to README 2017-10-30 16:21:24 -07:00
TEST Refresh TEST file to include new variables 2017-11-08 11:09:30 -08:00
zfs.release.in Move zfs.release generation to configure step 2012-07-12 12:22:51 -07:00

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ZFS on Linux is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the OpenZFS community.

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