lvm2-commits September 2019

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90 discussions

master - lvconvert: improve validation thin and cache pool conversion
by Zdenek Kabelac 17 Sep '19

17 Sep '19

Gitweb: https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=7612c21f5511c58bac81f… Commit: 7612c21f5511c58bac81fc46e304bd9f4cd2cd75 Parent: 13fb57bbb1deca9ea14e58a3a4edf284d3f4846c Author: Zdenek Kabelac <zkabelac(a)redhat.com> AuthorDate: Fri Sep 6 18:09:40 2019 +0200 Committer: Zdenek Kabelac <zkabelac(a)redhat.com> CommitterDate: Tue Sep 17 13:13:49 2019 +0200 lvconvert: improve validation thin and cache pool conversion Limit convertible LVs to thin-pool and cache-pools. Also fix return code on interal error path to return ECMD_FAILED. --- WHATS_NEW | 1 + tools/lvconvert.c | 52 +++++++++++++++++++++++++++++++++++++++++++++++----- 2 files changed, 48 insertions(+), 5 deletions(-) diff --git a/WHATS_NEW b/WHATS_NEW index cb93bbe..518b944 100644 --- a/WHATS_NEW +++ b/WHATS_NEW @@ -1,5 +1,6 @@ Version 2.03.06 - ================================ + Enhance validation for thin and cache pool conversion and swapping. Improve internal removal of cached devices. Synchronize with udev when dropping snapshot. Add missing device synchronization point before removing pvmove node. diff --git a/tools/lvconvert.c b/tools/lvconvert.c index 31f9296..d64ab22 100644 --- a/tools/lvconvert.c +++ b/tools/lvconvert.c @@ -4455,24 +4455,66 @@ static int _lvconvert_to_pool_or_swap_metadata_single(struct cmd_context *cmd, struct dm_list *use_pvh = NULL; int to_thinpool = 0; int to_cachepool = 0; + int lvt_enum = get_lvt_enum(lv); + struct lv_type *lvtype; switch (cmd->command->command_enum) { case lvconvert_to_thinpool_or_swap_metadata_CMD: + if (lv_is_cache(lv)) + /* For cached LV check the cache origin LV type */ + lvt_enum = get_lvt_enum(seg_lv(first_seg(lv), 0)); to_thinpool = 1; break; case lvconvert_to_cachepool_or_swap_metadata_CMD: + if (lv_is_cache(lv)) + goto_bad; /* Cache over cache is not supported */ to_cachepool = 1; break; default: - log_error(INTERNAL_ERROR "Invalid lvconvert pool command"); - return 0; - }; + log_error(INTERNAL_ERROR "Invalid lvconvert pool command."); + return ECMD_FAILED; + } + + switch (lvt_enum) { + case thinpool_LVT: + if (!to_thinpool) + goto_bad; /* can't accept cache-pool */ + break; /* swap thin-pool */ + case cachepool_LVT: + if (!to_cachepool) + goto_bad; /* can't accept thin-pool */ + break; /* swap cache-pool */ + case linear_LVT: + case raid_LVT: + case striped_LVT: + case zero_LVT: + break; + default: +bad: + lvtype = get_lv_type(lvt_enum); + log_error("LV %s with type %s cannot be used as a %s pool LV.", + display_lvname(lv), lvtype ? lvtype->name : "unknown", + to_thinpool ? "thin" : "cache"); + return ECMD_FAILED; + } if (lv_is_origin(lv)) { log_error("Cannot convert logical volume %s under snapshot.", display_lvname(lv)); - return 0; - }; + return ECMD_FAILED; + } + + if (!lv_is_visible(lv)) { + log_error("Can't convert internal LV %s.", + display_lvname(lv)); + return ECMD_FAILED; + } + + if (lv_is_locked(lv)) { + log_error("Can't convert locked LV %s.", + display_lvname(lv)); + return ECMD_FAILED; + } if (cmd->position_argc > 1) { /* First pos arg is required LV, remaining are optional PVs. */

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stable-2.02 - tests: pool conversion
by Zdenek Kabelac 17 Sep '19

17 Sep '19

Gitweb: https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=2694f93bb4b670d5afc51… Commit: 2694f93bb4b670d5afc51ff656f51e1e2945664a Parent: e147786bac52fea240955329963c9eed0eebfb18 Author: Zdenek Kabelac <zkabelac(a)redhat.com> AuthorDate: Tue Sep 17 11:27:13 2019 +0200 Committer: Zdenek Kabelac <zkabelac(a)redhat.com> CommitterDate: Tue Sep 17 11:33:55 2019 +0200 tests: pool conversion Test conversion of cached LV. --- test/shell/lvconvert-cache-thin.sh | 16 ++++++++++++++++ 1 files changed, 16 insertions(+), 0 deletions(-) diff --git a/test/shell/lvconvert-cache-thin.sh b/test/shell/lvconvert-cache-thin.sh index e1d38b8..7dda6e6 100644 --- a/test/shell/lvconvert-cache-thin.sh +++ b/test/shell/lvconvert-cache-thin.sh @@ -51,4 +51,20 @@ check lv_field $vg/$lv1 segtype "thin" lvconvert --uncache $vg/tpool lvs -a $vg +lvremove -f $vg + +# Check conversion of cached LV works as thin-pool +lvcreate -L10 -n $lv $vg +lvcreate -L10 -n $lv1 $vg +lvcreate -H -L10 $vg/$lv + +# Stack of cache over cache is unsupported ATM +fail lvconvert --yes --cachepool $vg/$lv + +# Thin-pool cannot use cached metaddata LV (meta should be on FAST device) +fail lvconvert --yes --thinpool $vg/$lv1 --poolmetadata $vg/$lv + +# Thin-pool CAN use cached data LV +lvconvert --yes --thinpool $vg/$lv + vgremove -f $vg

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stable-2.02 - lvconvert: improve validation thin and cache pool conversion
by Zdenek Kabelac 17 Sep '19

17 Sep '19

Gitweb: https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=e147786bac52fea240955… Commit: e147786bac52fea240955329963c9eed0eebfb18 Parent: 1c07c5482916d493caf951cac5b5b22af0620724 Author: Zdenek Kabelac <zkabelac(a)redhat.com> AuthorDate: Fri Sep 6 18:09:40 2019 +0200 Committer: Zdenek Kabelac <zkabelac(a)redhat.com> CommitterDate: Tue Sep 17 11:33:53 2019 +0200 lvconvert: improve validation thin and cache pool conversion Limit convertible LVs to thin-pool and cache-pools. Also fix return code on interal error path to return ECMD_FAILED. --- WHATS_NEW | 1 + tools/lvconvert.c | 52 +++++++++++++++++++++++++++++++++++++++++++++++----- 2 files changed, 48 insertions(+), 5 deletions(-) diff --git a/WHATS_NEW b/WHATS_NEW index afdf523..8a597ba 100644 --- a/WHATS_NEW +++ b/WHATS_NEW @@ -1,5 +1,6 @@ Version 2.02.187 - =================================== + Enhance validation for thin and cache pool conversion and swapping. Version 2.02.186 - 27th August 2019 =================================== diff --git a/tools/lvconvert.c b/tools/lvconvert.c index 8a07a84..31ca5a1 100644 --- a/tools/lvconvert.c +++ b/tools/lvconvert.c @@ -4304,24 +4304,66 @@ static int _lvconvert_to_pool_or_swap_metadata_single(struct cmd_context *cmd, struct dm_list *use_pvh = NULL; int to_thinpool = 0; int to_cachepool = 0; + int lvt_enum = get_lvt_enum(lv); + struct lv_type *lvtype; switch (cmd->command->command_enum) { case lvconvert_to_thinpool_or_swap_metadata_CMD: + if (lv_is_cache(lv)) + /* For cached LV check the cache origin LV type */ + lvt_enum = get_lvt_enum(seg_lv(first_seg(lv), 0)); to_thinpool = 1; break; case lvconvert_to_cachepool_or_swap_metadata_CMD: + if (lv_is_cache(lv)) + goto_bad; /* Cache over cache is not supported */ to_cachepool = 1; break; default: - log_error(INTERNAL_ERROR "Invalid lvconvert pool command"); - return 0; - }; + log_error(INTERNAL_ERROR "Invalid lvconvert pool command."); + return ECMD_FAILED; + } + + switch (lvt_enum) { + case thinpool_LVT: + if (!to_thinpool) + goto_bad; /* can't accept cache-pool */ + break; /* swap thin-pool */ + case cachepool_LVT: + if (!to_cachepool) + goto_bad; /* can't accept thin-pool */ + break; /* swap cache-pool */ + case linear_LVT: + case raid_LVT: + case striped_LVT: + case zero_LVT: + break; + default: +bad: + lvtype = get_lv_type(lvt_enum); + log_error("LV %s with type %s cannot be used as a %s pool LV.", + display_lvname(lv), lvtype ? lvtype->name : "unknown", + to_thinpool ? "thin" : "cache"); + return ECMD_FAILED; + } if (lv_is_origin(lv)) { log_error("Cannot convert logical volume %s under snapshot.", display_lvname(lv)); - return 0; - }; + return ECMD_FAILED; + } + + if (!lv_is_visible(lv)) { + log_error("Can't convert internal LV %s.", + display_lvname(lv)); + return ECMD_FAILED; + } + + if (lv_is_locked(lv)) { + log_error("Can't convert locked LV %s.", + display_lvname(lv)); + return ECMD_FAILED; + } if (cmd->position_argc > 1) { /* First pos arg is required LV, remaining are optional PVs. */

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master - Revert "tests: drop unnecessary pid from LVMTEST prefix"
by David Teigland 16 Sep '19

16 Sep '19

Gitweb: https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=13fb57bbb1deca9ea14e5… Commit: 13fb57bbb1deca9ea14e58a3a4edf284d3f4846c Parent: 6e1cf248d4a9520b6e342dc583f1e4f7d4c5f8fa Author: David Teigland <teigland(a)redhat.com> AuthorDate: Mon Sep 16 13:01:50 2019 -0500 Committer: David Teigland <teigland(a)redhat.com> CommitterDate: Mon Sep 16 13:01:50 2019 -0500 Revert "tests: drop unnecessary pid from LVMTEST prefix" This reverts commit 51c105702f24d64f1adc25a692ef37e20878cec5. it seems the test system still needs this for some reason --- test/lib/inittest.sh | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/test/lib/inittest.sh b/test/lib/inittest.sh index 4914b29..a6cefa8 100644 --- a/test/lib/inittest.sh +++ b/test/lib/inittest.sh @@ -68,7 +68,7 @@ export LVM_TEST_LVMPOLLD LVM_TEST_LOCK_TYPE_DLM LVM_TEST_LOCK_TYPE_SANLOCK TESTOLDPWD=$(pwd) COMMON_PREFIX="LVMTEST" -PREFIX="${COMMON_PREFIX}" +PREFIX="${COMMON_PREFIX}$$" # Check we are not conflickting with some exiting setup if test -z "$SKIP_ROOT_DM_CHECK" ; then

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master - Revert "lvmlockd: use commonly used define NOTIFYDBUS_SUPPORT"
by David Teigland 16 Sep '19

16 Sep '19

Gitweb: https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=6e1cf248d4a9520b6e342… Commit: 6e1cf248d4a9520b6e342dc583f1e4f7d4c5f8fa Parent: 51c105702f24d64f1adc25a692ef37e20878cec5 Author: David Teigland <teigland(a)redhat.com> AuthorDate: Mon Sep 16 11:42:23 2019 -0500 Committer: David Teigland <teigland(a)redhat.com> CommitterDate: Mon Sep 16 11:44:42 2019 -0500 Revert "lvmlockd: use commonly used define NOTIFYDBUS_SUPPORT" This reverts commit 71af650760c2b75b3c267277f47d8ba235421300. It disabled sd_notify() which broke 'systemctl start lvmlockd'. --- daemons/lvmlockd/Makefile.in | 21 ++++++++++++++------- daemons/lvmlockd/lvmlockd-core.c | 2 +- 2 files changed, 15 insertions(+), 8 deletions(-) diff --git a/daemons/lvmlockd/Makefile.in b/daemons/lvmlockd/Makefile.in index dca05b8..9c03401 100644 --- a/daemons/lvmlockd/Makefile.in +++ b/daemons/lvmlockd/Makefile.in @@ -38,18 +38,25 @@ TARGETS = lvmlockd lvmlockctl include $(top_builddir)/make.tmpl -CFLAGS += $(EXTRA_EXEC_CFLAGS) $(SYSTEMD_CFLAGS) +CFLAGS += $(EXTRA_EXEC_CFLAGS) INCLUDES += -I$(top_srcdir)/libdaemon/server -LDFLAGS += $(EXTRA_EXEC_LDFLAGS) $(ELDFLAGS) -LIBS += $(PTHREAD_LIBS) $(SYSTEMD_LIBS) +LDFLAGS += -L$(top_builddir)/libdaemon/server $(EXTRA_EXEC_LDFLAGS) $(ELDFLAGS) +LIBS += $(RT_LIBS) $(DAEMON_LIBS) $(PTHREAD_LIBS) -lvmlockd: $(OBJECTS) $(top_builddir)/libdaemon/server/libdaemonserver.a $(INTERNAL_LIBS) + +ifeq ($(USE_SD_NOTIFY),yes) + CFLAGS += $(shell pkg-config --cflags libsystemd) -DUSE_SD_NOTIFY + LIBS += $(shell pkg-config --libs libsystemd) +endif + +lvmlockd: $(OBJECTS) $(top_builddir)/libdaemon/client/libdaemonclient.a \ + $(top_builddir)/libdaemon/server/libdaemonserver.a @echo " [CC] $@" - $(Q) $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $+ $(LOCK_LIBS) $(LIBS) + $(Q) $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJECTS) $(LOCK_LIBS) -ldaemonserver $(INTERNAL_LIBS) $(LIBS) -lvmlockctl: lvmlockctl.o $(INTERNAL_LIBS) +lvmlockctl: lvmlockctl.o $(top_builddir)/libdaemon/client/libdaemonclient.a @echo " [CC] $@" - $(Q) $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $+ $(LIBS) + $(Q) $(CC) $(CFLAGS) $(LDFLAGS) -o $@ lvmlockctl.o $(INTERNAL_LIBS) $(LIBS) install_lvmlockd: lvmlockd @echo " [INSTALL] $<" diff --git a/daemons/lvmlockd/lvmlockd-core.c b/daemons/lvmlockd/lvmlockd-core.c index 5609ccc..39275fb 100644 --- a/daemons/lvmlockd/lvmlockd-core.c +++ b/daemons/lvmlockd/lvmlockd-core.c @@ -31,7 +31,7 @@ #include <sys/utsname.h> #include <sys/un.h> -#ifdef NOTIFYDBUS_SUPPORT +#ifdef USE_SD_NOTIFY #include <systemd/sd-daemon.h> #endif

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master - tests: drop unnecessary pid from LVMTEST prefix
by David Teigland 16 Sep '19

16 Sep '19

Gitweb: https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=51c105702f24d64f1adc2… Commit: 51c105702f24d64f1adc25a692ef37e20878cec5 Parent: df36a8eadfbbfe547cc734259dfc598cb773b59c Author: David Teigland <teigland(a)redhat.com> AuthorDate: Thu Sep 12 14:52:13 2019 -0500 Committer: David Teigland <teigland(a)redhat.com> CommitterDate: Thu Sep 12 14:52:13 2019 -0500 tests: drop unnecessary pid from LVMTEST prefix --- test/lib/inittest.sh | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/test/lib/inittest.sh b/test/lib/inittest.sh index a6cefa8..4914b29 100644 --- a/test/lib/inittest.sh +++ b/test/lib/inittest.sh @@ -68,7 +68,7 @@ export LVM_TEST_LVMPOLLD LVM_TEST_LOCK_TYPE_DLM LVM_TEST_LOCK_TYPE_SANLOCK TESTOLDPWD=$(pwd) COMMON_PREFIX="LVMTEST" -PREFIX="${COMMON_PREFIX}$$" +PREFIX="${COMMON_PREFIX}" # Check we are not conflickting with some exiting setup if test -z "$SKIP_ROOT_DM_CHECK" ; then

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master - tests: don't change real test output
by David Teigland 16 Sep '19

16 Sep '19

Gitweb: https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=df36a8eadfbbfe547cc73… Commit: df36a8eadfbbfe547cc734259dfc598cb773b59c Parent: 196a9ed59fa65666a1efa26440166ace6206e545 Author: David Teigland <teigland(a)redhat.com> AuthorDate: Thu Sep 12 14:45:13 2019 -0500 Committer: David Teigland <teigland(a)redhat.com> CommitterDate: Thu Sep 12 14:45:13 2019 -0500 tests: don't change real test output --- test/lib/brick-shelltest.h | 14 -------------- 1 files changed, 0 insertions(+), 14 deletions(-) diff --git a/test/lib/brick-shelltest.h b/test/lib/brick-shelltest.h index 56429c7..b58f3d6 100644 --- a/test/lib/brick-shelltest.h +++ b/test/lib/brick-shelltest.h @@ -376,20 +376,6 @@ struct Substitute { std::string prefix; std::string map( std::string line ) { - if ( std::string( line, 0, 9 ) == "@TESTDIR=" ) - testdir = std::string( line, 9, line.length() - 10 ); // skip \n - else if ( std::string( line, 0, 8 ) == "@PREFIX=" ) - prefix = std::string( line, 8, line.length() - 9 ); // skip \n - else { - size_t off; - if (!testdir.empty()) - while ( (off = line.find( testdir )) != std::string::npos ) - line.replace( off, testdir.length(), "@TESTDIR@" ); - - if (!prefix.empty()) - while ( (off = line.find( prefix )) != std::string::npos ) - line.replace( off, prefix.length(), "@PREFIX@" ); - } return line; } };

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master - tests: metadata-zero-space more debugging
by David Teigland 12 Sep '19

12 Sep '19

Gitweb: https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=196a9ed59fa65666a1efa… Commit: 196a9ed59fa65666a1efa26440166ace6206e545 Parent: 39a0de68bdbd26bf64e2cc92731c9095c5d36e17 Author: David Teigland <teigland(a)redhat.com> AuthorDate: Thu Sep 12 14:38:20 2019 -0500 Committer: David Teigland <teigland(a)redhat.com> CommitterDate: Thu Sep 12 14:38:20 2019 -0500 tests: metadata-zero-space more debugging --- test/shell/metadata-zero-space.sh | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/test/shell/metadata-zero-space.sh b/test/shell/metadata-zero-space.sh index ec7b65c..1bd1eef 100644 --- a/test/shell/metadata-zero-space.sh +++ b/test/shell/metadata-zero-space.sh @@ -38,7 +38,7 @@ xxd meta.raw > meta.txt # to help debug if the next grep fails ls -l meta.txt head -n 100 meta.txt -grep -A4 -B4 00001200 meta.txt +grep -A4 -B4 1200 meta.txt grep -B1 "$vg {" meta.txt > meta.vg

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master - tests: unnecessary braces causes test failures
by David Teigland 12 Sep '19

12 Sep '19

Gitweb: https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=39a0de68bdbd26bf64e2c… Commit: 39a0de68bdbd26bf64e2cc92731c9095c5d36e17 Parent: 585db872749a08dd42139cbf4234cbcd50a19683 Author: David Teigland <teigland(a)redhat.com> AuthorDate: Thu Sep 12 12:55:00 2019 -0500 Committer: David Teigland <teigland(a)redhat.com> CommitterDate: Thu Sep 12 12:55:00 2019 -0500 tests: unnecessary braces causes test failures --- test/lib/aux.sh | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/test/lib/aux.sh b/test/lib/aux.sh index b7207eb..9c9e1fd 100644 --- a/test/lib/aux.sh +++ b/test/lib/aux.sh @@ -1190,7 +1190,7 @@ devices/dir = "$DM_DEV_DIR" devices/filter = "a|.*|" devices/global_filter = [ "a|$DM_DEV_DIR/mapper/${PREFIX}.*pv[0-9_]*$|", "r|.*|" ] devices/md_component_detection = 0 -devices/scan = [ "$DM_DEV_DIR" ] +devices/scan = "$DM_DEV_DIR" devices/sysfs_scan = 1 devices/write_cache_state = 0 global/abort_on_internal_errors = 1

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master - tests: skip some without wipefs
by David Teigland 12 Sep '19

12 Sep '19

Gitweb: https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=585db872749a08dd42139… Commit: 585db872749a08dd42139cbf4234cbcd50a19683 Parent: 82b887a4cfa12f32781cc0dc89c51d89658179a1 Author: David Teigland <teigland(a)redhat.com> AuthorDate: Thu Sep 12 11:23:30 2019 -0500 Committer: David Teigland <teigland(a)redhat.com> CommitterDate: Thu Sep 12 11:23:30 2019 -0500 tests: skip some without wipefs --- test/shell/allow-mixed-block-sizes.sh | 1 + test/shell/duplicate-pvs-md0.sh | 2 ++ test/shell/duplicate-pvs-md1.sh | 2 ++ test/shell/lvm-on-md.sh | 2 ++ test/shell/pvcreate-operation-md.sh | 2 ++ 5 files changed, 9 insertions(+), 0 deletions(-) diff --git a/test/shell/allow-mixed-block-sizes.sh b/test/shell/allow-mixed-block-sizes.sh index 2f0b3a0..ec60bc6 100644 --- a/test/shell/allow-mixed-block-sizes.sh +++ b/test/shell/allow-mixed-block-sizes.sh @@ -15,6 +15,7 @@ SKIP_WITH_LVMPOLLD=1 . lib/inittest losetup -h | grep sector-size || skip +wipefs -V || skip dd if=/dev/zero of=loopa bs=$((1024*1024)) count=2 2> /dev/null dd if=/dev/zero of=loopb bs=$((1024*1024)) count=2 2> /dev/null diff --git a/test/shell/duplicate-pvs-md0.sh b/test/shell/duplicate-pvs-md0.sh index 4c7863d..d64da4a 100644 --- a/test/shell/duplicate-pvs-md0.sh +++ b/test/shell/duplicate-pvs-md0.sh @@ -28,6 +28,8 @@ _clear_online_files() { . lib/inittest +wipefs -V || skip + test -f /proc/mdstat && grep -q raid0 /proc/mdstat || \ modprobe raid0 || skip not grep md0 /proc/mdstat diff --git a/test/shell/duplicate-pvs-md1.sh b/test/shell/duplicate-pvs-md1.sh index d242e03..d186c0f 100644 --- a/test/shell/duplicate-pvs-md1.sh +++ b/test/shell/duplicate-pvs-md1.sh @@ -33,6 +33,8 @@ _clear_online_files() { . lib/inittest +wipefs -V || skip + test -f /proc/mdstat && grep -q raid1 /proc/mdstat || \ modprobe raid1 || skip not grep md0 /proc/mdstat diff --git a/test/shell/lvm-on-md.sh b/test/shell/lvm-on-md.sh index 6862101..7bcc276 100644 --- a/test/shell/lvm-on-md.sh +++ b/test/shell/lvm-on-md.sh @@ -28,6 +28,8 @@ _clear_online_files() { . lib/inittest +wipefs -V || skip + test -f /proc/mdstat && grep -q raid1 /proc/mdstat || \ modprobe raid1 || skip not grep md0 /proc/mdstat diff --git a/test/shell/pvcreate-operation-md.sh b/test/shell/pvcreate-operation-md.sh index 12cf891..1774d23 100644 --- a/test/shell/pvcreate-operation-md.sh +++ b/test/shell/pvcreate-operation-md.sh @@ -18,6 +18,8 @@ SKIP_WITH_LVMPOLLD=1 # skip this test if mdadm or sfdisk (or others) aren't available which sfdisk || skip +wipefs -V || skip + test -f /proc/mdstat && grep -q raid0 /proc/mdstat || \ modprobe raid0 || skip not grep md0 /proc/mdstat

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lvm2-commits September 2019