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dbginfo.sh: exclude (empty) cpu subdirs under zfcp sdev block mq sysfs

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With many CPUs, such as triple digit counts, the by default many empty
sysfs directories are prohibitive to collect, especially if the number
of SCSI disk devices is also large, such as 4-digit counts.

Excluding them from being collected from sysfs saves hundreds times
thousands of archive entries and inodes on expansion.

Since the number device-mapper devices (multipath and other target types
such as LVM) is smaller and can include devices not backed by zfcp, keep
collecting
/sys/devices/virtual/block/dm-[0-9]*/mq/0/cpu[0-9]*/

Definitely keep collecting
/sys/kernel/debug/block/{sd,dm-}*/hctx0/cpu[0-9]*/
as it contains actual statistics files:
completed  default_rq_list  dispatched  merged  poll_rq_list  read_rq_list

Signed-off-by: Steffen Maier <maier@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Steffen Maier
2023-06-02 21:33:05 +02:00
committed by Jan Höppner
parent f4d1874ac5
commit e5821301f6
1 changed files with 2 additions and 0 deletions
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2
scripts/dbginfo.sh
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@@ -836,6 +836,7 @@ collect_sysfs() {
-x '*/page_idle/bitmap*' \
-x '*/tracing/per_cpu/*' \
-x '*/tracing/free_buffer' \
-x '*/devices/css[0-9]*/[0-9]*.*.*/[0-9]*.*.*/host[0-9]*/rport-[0-9]*:*-*/target[0-9]*:*:*/[0-9]*:*:*:*/block/sd*/mq/0/cpu[0-9]*' \
--ignore-failed-read -J 1 -T 5 2>>${OUTPUT_FILE_SYSFS}.err
rc=$?
else
@@ -863,6 +864,7 @@ collect_sysfs() {
-a -not \( -path '*page_idle*' -a -name 'bitmap*' \) \
-a -not -path '*tracing/per_cpu*' \
-a -not -path '*/tracing/free_buffer' \
-a -not -path '*/devices/css[0-9]*/[0-9]*.*.*/[0-9]*.*.*/host[0-9]*/rport-[0-9]*:*-*/target[0-9]*:*:*/[0-9]*:*:*:*/block/sd*/mq/0/cpu[0-9]*' \
2>/dev/null | while IFS= read -r file_name; do
echo " ${file_name}"
if ! dd if="${file_name}" status=noxfer iflag=nonblock \