[PATCH v4 1/4] Add lvm2 thin provision dump target checker

We need to check if a directory or a device is lvm2 thinp target. First, we use get_block_dump_target() to convert dump path into block device, then we check if the device is lvm2 thinp target by cmd lvs. is_lvm2_thinp_device is now located in kdump-lib-initramfs.sh, for it will be used in 2nd kernel. is_lvm2_thinp_dump_target is located in kdump-lib.sh, for it is only used in 1st kernel, and it has dependencies which exist in kdump-lib.sh. Signed-off-by: Tao Liu <ltao(a)redhat.com&gt; --- kdump-lib-initramfs.sh | 9 +++++++++ kdump-lib.sh | 10 ++++++++++ 2 files changed, 19 insertions(+) diff --git a/kdump-lib-initramfs.sh b/kdump-lib-initramfs.sh index 84e6bf7..bcf9927 100755 --- a/kdump-lib-initramfs.sh +++ b/kdump-lib-initramfs.sh @@ -131,3 +131,12 @@ is_fs_dump_target() { [ -n "$(kdump_get_conf_val "ext[234]\|xfs\|btrfs\|minix")" ] } + +is_lvm2_thinp_device() +{ + _device_path=$1 + _lvm2_thin_device=$(lvm lvs -S 'lv_layout=sparse && lv_layout=thin' \ + --nosuffix --noheadings -o vg_name,lv_name "$_device_path" 2>/dev/null) + + [ -n "$_lvm2_thin_device" ] && return $? +} \ No newline at end of file diff --git a/kdump-lib.sh b/kdump-lib.sh index b137c89..534b8b6 100755 --- a/kdump-lib.sh +++ b/kdump-lib.sh @@ -117,6 +117,16 @@ is_dump_to_rootfs() [[ $(kdump_get_conf_val 'failure_action\|default') == dump_to_rootfs ]] } +is_lvm2_thinp_dump_target() +{ + _target=$(get_block_dump_target) + if [ -n "$_target" ]; then + is_lvm2_thinp_device "$_target" + else + return 1 + fi +} + get_failure_action_target() { local _target -- 2.33.1