tests: add a new test for rdev lifetime

This test add and remove a underlying disk to raid concurretly, verify that the following problem is fixed: run mdadm test 23rdev-lifetime at Fri Apr 28 03:25:30 UTC 2023 md: could not open device unknown-block(1,0). sysfs: cannot create duplicate filename '/devices/virtual/block/md0/md/dev-ram0' CPU: 26 PID: 10521 Comm: test Not tainted 6.3.0-rc2-00134-g7b3a8828043c torvalds#115 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.1-2.fc37 04/014 Call Trace: <TASK> dump_stack_lvl+0xe7/0x180 dump_stack+0x18/0x30 sysfs_warn_dup+0xa2/0xd0 sysfs_create_dir_ns+0x119/0x140 kobject_add_internal+0x143/0x4d0 kobject_add_varg+0x35/0x70 kobject_add+0x64/0xd0 bind_rdev_to_array+0x254/0x840 [md_mod] new_dev_store+0x14d/0x350 [md_mod] md_attr_store+0xc1/0x1a0 [md_mod] sysfs_kf_write+0x51/0x70 kernfs_fop_write_iter+0x188/0x270 vfs_write+0x27e/0x460 ksys_write+0x85/0x180 __x64_sys_write+0x21/0x30 do_syscall_64+0x6c/0xe0 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f26bacf5387 Code: 0d 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 84 RSP: 002b:00007ffe98d79e68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f26bacf5387 RDX: 0000000000000004 RSI: 000055bd10282bf0 RDI: 0000000000000001 RBP: 000055bd10282bf0 R08: 000000000000000a R09: 00007f26bad8b4e0 R10: 00007f26bad8b3e0 R11: 0000000000000246 R12: 0000000000000004 R13: 00007f26badc8520 R14: 0000000000000004 R15: 00007f26badc8700 </TASK> Signed-off-by: Yu Kuai <[email protected]>
intel-lab-lkp · May 23, 2023 · 13db349 · 13db349
1 parent 7f102f1
commit 13db349
Showing 1 changed file with 48 additions and 0 deletions.
diff --git a/tests/23rdev-lifetime b/tests/23rdev-lifetime
@@ -0,0 +1,48 @@
+devname=${dev0##*/}
+devt=`cat /sys/block/$devname/dev`
+dmesg_marker="run mdadm test 23rdev-lifetime at `date`"
+pid1=0
+pid2=0
+
+stop() {
+        if [[ $1 -ne 0 ]]; then
+                kill -9 $1
+        fi
+}
+
+trap 'stop $pid1; stop $pid2;' EXIT
+
+echo "$dmesg_marker" >> /dev/kmsg
+
+check_dmesg() {
+        dmesg | grep -A 9999 "$dmesg_marker" | grep "sysfs: cannot create duplicate filename"
+
+        if [[ $? -eq 0 ]]; then
+                die "sysfs dumplicate"
+        fi
+}
+
+add_by_sysfs() {
+        while true; do
+                echo $devt > /sys/block/md0/md/new_dev
+                check_dmesg
+        done
+}
+
+remove_by_sysfs(){
+        while true; do
+                echo remove > /sys/block/md0/md/dev-${devname}/state
+                check_dmesg
+        done
+}
+
+echo md0 > /sys/module/md_mod/parameters/new_array || die "create md0 failed"
+
+add_by_sysfs &
+pid1=$!
+
+remove_by_sysfs &
+pid2=$!
+
+sleep 5
+echo clear > /sys/block/md0/md/array_state