[Bug 1427333] Re: ISST_SAN:ls -l /dev/mapper/mpath output showing the deleted partitions even after the removal of partitions
Dave Heller
hellerda at linux.vnet.ibm.com
Mon Mar 2 20:41:08 UTC 2015
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https://bugs.launchpad.net/bugs/1427333
Title:
ISST_SAN:ls -l /dev/mapper/mpath output showing the deleted partitions
even after the removal of partitions
Status in udev package in Ubuntu:
New
Bug description:
== Comment: #0 - LEKSHMI C. PILLAI <lekshmi.cpillai at in.ibm.com> - 2015-02-25 04:10:23 ==
Hi
On one of my Ubuntu 15.04 guest I was deleting partitions using
fdisk.distrib command. Its deleting successfully,but ls -l
/dev/mapper/ is still shoiwng the entry
After creation of 3 partitions on /dev/mapper/mpath30,o/p of
1)fdisk.distrib -l 2)kpartx 3)ls -l
1)root at zap06:/dev/mapper# fdisk.distrib -l
/dev/mapper/mpath30-------------
Disk /dev/mapper/mpath30: 15 GiB, 16106127360 bytes, 31457280 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0xeb2e9efb
Device Boot Start End Sectors Size Id Type
/dev/mapper/mpath30p1 2048 6293503 6291456 3G 83 Linux
/dev/mapper/mpath30p2 6293504 14682111 8388608 4G 83 Linux
/dev/mapper/mpath30p3 14682112 31457279 16775168 8G 83 Linux
2)root at zap06:/dev/mapper# kpartx -r /dev/mapper/mpath30----------------
mpath30p1 : 0 6291456 /dev/mapper/mpath30 2048
mpath30p2 : 0 8388608 /dev/mapper/mpath30 6293504
mpath30p3 : 0 16775168 /dev/mapper/mpath30 14682112
3)root at zap06:/dev/mapper# ls -l /dev/mapper/mpath30*
lrwxrwxrwx 1 root root 7 Feb 25 02:07 /dev/mapper/mpath30 -> ../dm-8
brw-rw---- 1 root disk 252, 70 Feb 25 02:04 /dev/mapper/mpath30-part1
brw-rw---- 1 root disk 252, 71 Feb 25 02:04 /dev/mapper/mpath30-part2
brw-rw---- 1 root disk 252, 72 Feb 25 02:04 /dev/mapper/mpath30-part3
After Deletion of 3rd partition,o/p from each of these
root at zap06:/dev/mapper# kpartx -r /dev/mapper/mpath30
mpath30p1 : 0 6291456 /dev/mapper/mpath30 2048
mpath30p2 : 0 8388608 /dev/mapper/mpath30 6293504
root at zap06:/dev/mapper# ls -l /dev/mapper/mpath30*
lrwxrwxrwx 1 root root 7 Feb 25 02:07 /dev/mapper/mpath30 -> ../dm-8
brw-rw---- 1 root disk 252, 70 Feb 25 02:04 /dev/mapper/mpath30-part1
brw-rw---- 1 root disk 252, 71 Feb 25 02:04 /dev/mapper/mpath30-part2
brw-rw---- 1 root disk 252, 72 Feb 25 02:04 /dev/mapper/mpath30-part3------>
root at zap06:/dev/mapper# fdisk.distrib -l /dev/mapper/mpath30
Disk /dev/mapper/mpath30: 15 GiB, 16106127360 bytes, 31457280 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0xeb2e9efb
Device Boot Start End Sectors Size Id Type
/dev/mapper/mpath30p1 2048 6293503 6291456 3G 83 Linux
/dev/mapper/mpath30p2 6293504 14682111 8388608 4G 83 Linux
So I rebooted the machine
After reboot
root at zap06:/dev/mapper# kpartx -r /dev/mapper/mpath30
mpath30p1 : 0 6291456 /dev/mapper/mpath30 2048
mpath30p2 : 0 8388608 /dev/mapper/mpath30 6293504
root at zap06:/dev/mapper# ls -l /dev/mapper/mpath30*
lrwxrwxrwx 1 root root 8 Feb 25 08:22 /dev/mapper/mpath30 -> ../dm-13
brw-rw---- 1 root disk 252, 16 Feb 25 08:22 /dev/mapper/mpath30-part1
brw-rw---- 1 root disk 252, 17 Feb 25 08:22 /dev/mapper/mpath30-part2
root at zap06:/dev/mapper#
Again I created 2 more partitions on mpath30
These are the o/ps from kpartx,fdisk.distrib and ls -l
root at zap06:/dev/mapper# ls -l /dev/mapper/mpath30*
lrwxrwxrwx 1 root root 8 Feb 25 08:29 /dev/mapper/mpath30 -> ../dm-13
brw-rw---- 1 root disk 252, 16 Feb 25 08:22 /dev/mapper/mpath30-part1
brw-rw---- 1 root disk 252, 17 Feb 25 08:22 /dev/mapper/mpath30-part2
brw-rw---- 1 root disk 252, 69 Feb 25 08:29 /dev/mapper/mpath30-part3
brw-rw---- 1 root disk 252, 70 Feb 25 08:29 /dev/mapper/mpath30-part4
root at zap06:/dev/mapper# kpartx -r /dev/mapper/mpath30
mpath30p1 : 0 6291456 /dev/mapper/mpath30 2048
mpath30p2 : 0 8388608 /dev/mapper/mpath30 6293504
mpath30p3 : 0 4194304 /dev/mapper/mpath30 14682112
mpath30p4 : 0 12580864 /dev/mapper/mpath30 18876416
root at zap06:/dev/mapper# fdisk.distrib -l /dev/mapper/mpath30
Disk /dev/mapper/mpath30: 15 GiB, 16106127360 bytes, 31457280 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0xeb2e9efb
Device Boot Start End Sectors Size Id Type
/dev/mapper/mpath30p1 2048 6293503 6291456 3G 83 Linux
/dev/mapper/mpath30p2 6293504 14682111 8388608 4G 83 Linux
/dev/mapper/mpath30p3 14682112 18876415 4194304 2G 83 Linux
/dev/mapper/mpath30p4 18876416 31457279 12580864 6G 83 Linux
root at zap06:/dev/mapper#
Now tried deletion of 4th and 3rd partitions
O/p of each command after dletion
root at zap06:/dev/mapper# fdisk.distrib -l /dev/mapper/mpath30
Disk /dev/mapper/mpath30: 15 GiB, 16106127360 bytes, 31457280 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0xeb2e9efb
Device Boot Start End Sectors Size Id Type
/dev/mapper/mpath30p1 2048 6293503 6291456 3G 83 Linux
/dev/mapper/mpath30p2 6293504 14682111 8388608 4G 83 Linux
root at zap06:/dev/mapper# kpartx -r /dev/mapper/mpath30
mpath30p1 : 0 6291456 /dev/mapper/mpath30 2048
mpath30p2 : 0 8388608 /dev/mapper/mpath30 6293504
root at zap06:/dev/mapper# ls -l /dev/mapper/mpath30*
lrwxrwxrwx 1 root root 8 Feb 25 08:31 /dev/mapper/mpath30 -> ../dm-13
brw-rw---- 1 root disk 252, 16 Feb 25 08:22 /dev/mapper/mpath30-part1
brw-rw---- 1 root disk 252, 17 Feb 25 08:22 /dev/mapper/mpath30-part2
brw-rw---- 1 root disk 252, 69 Feb 25 08:29 /dev/mapper/mpath30-part3------>
brw-rw---- 1 root disk 252, 70 Feb 25 08:29 /dev/mapper/mpath30-part4------>
root at zap06:/dev/mapper#
And I tried creating filesystem on the dleeted partition.Its
successfully created FS and i mounted it.I am totally confused with
which is correct o/p and which is wrong?
root at zap06:/dev/mapper# mkfs.ext3 mpath30-part4
mke2fs 1.42.12 (29-Aug-2014)
Discarding device blocks: done
Creating filesystem with 1572608 4k blocks and 393216 inodes
Filesystem UUID: 6fd9febb-1fc6-4816-96f4-a14d63f91f54
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736
Allocating group tables: done
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
root at zap06:/dev/mapper#
root at zap06:/dev/mapper# mkdir /M304
root at zap06:/dev/mapper# kpartx -r /dev/mapper/mpath30
mpath30p1 : 0 6291456 /dev/mapper/mpath30 2048
mpath30p2 : 0 8388608 /dev/mapper/mpath30 6293504
root at zap06:/dev/mapper# fdisk.distrib -l /dev/mapper/mpath30
Disk /dev/mapper/mpath30: 15 GiB, 16106127360 bytes, 31457280 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0xeb2e9efb
Device Boot Start End Sectors Size Id Type
/dev/mapper/mpath30p1 2048 6293503 6291456 3G 83 Linux
/dev/mapper/mpath30p2 6293504 14682111 8388608 4G 83 Linux
root at zap06:/dev/mapper# mount /dev/mapper/mpath30-part4 /M304
root at zap06:/dev/mapper# echo $?
0
root at zap06:/dev/mapper# mount
/dev/sdp2 on / type ext4 (rw,errors=remount-ro)
proc on /proc type proc (rw,nodev,noexec,nosuid)
sysfs on /sys type sysfs (rw,nodev,noexec,nosuid)
none on /sys/fs/cgroup type tmpfs (rw,uid=0,gid=0,mode=0755,size=1024)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
udev on /dev type devtmpfs (rw,mode=0755)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)
none on /run/lock type tmpfs (rw,nodev,noexec,nosuid,size=5242880)
none on /run/shm type tmpfs (rw,nosuid,nodev)
none on /run/user type tmpfs (rw,nodev,noexec,nosuid,size=104857600,mode=0755)
none on /sys/fs/pstore type pstore (rw)
cgmfs on /run/cgmanager/fs type tmpfs (rw,relatime,size=128k,mode=755)
rpc_pipefs on /run/rpc_pipefs type rpc_pipefs (rw)
kte:/data on /data type nfs (rw,soft,nolock,vers=4,addr=10.33.11.31,clientaddr=9.3.123.72)
kte:/kte on /kte type nfs (rw,soft,nolock,vers=4,addr=10.33.11.31,clientaddr=9.3.123.72)
kte:/images on /images type nfs (rw,soft,nolock,vers=4,addr=10.33.11.31,clientaddr=9.3.123.72)
kte:/distros on /distros type nfs (rw,soft,nolock,vers=4,addr=10.33.11.31,clientaddr=9.3.123.72)
/dev/mapper/mpath30-part4 on /M304 type ext3 (rw)-------------------------FS mounted
root at zap06:/dev/mapper#
o/P
So after deletion while other tets are running,its difficult to reboot
everytime system.Also the outputs are misleading
Thanks
Lekshmi
== Comment: #2 - David Heller <hellerda at us.ibm.com> - 2015-02-25 15:36:26 ==
I'm not sure how it got into this state but yes, it does look like some device nodes were not cleaned up after the partitions were deleted. Currently the PT is empty:
root at zap06:~# kpartx -l /dev/mapper/mpath30
root at zap06:~# parted /dev/mapper/mpath30 print
Model: Linux device-mapper (multipath) (dm)
Disk /dev/mapper/mpath30: 16.1GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
But there are some device nodes hanging around, and they seem to be
holding the minor numbers corresponding to the deleted partitions:
root at zap06:~# ll /dev/mapper/mpath30*
lrwxrwxrwx 1 root root 8 Feb 25 19:52 /dev/mapper/mpath30 -> ../dm-13
brw-rw---- 1 root disk 252, 16 Feb 25 08:22 /dev/mapper/mpath30-part1
brw-rw---- 1 root disk 252, 17 Feb 25 08:22 /dev/mapper/mpath30-part2
brw-rw---- 1 root disk 252, 69 Feb 25 08:29 /dev/mapper/mpath30-part3
brw-rw---- 1 root disk 252, 70 Feb 25 08:52 /dev/mapper/mpath30-part4
root at zap06:~# ll /dev/disk/by-id/*mpath30*
lrwxrwxrwx 1 root root 11 Feb 25 19:52 /dev/disk/by-id/dm-name-mpath30 -> ../../dm-13
lrwxrwxrwx 1 root root 11 Feb 25 11:02 /dev/disk/by-id/dm-name-mpath30-part1 -> ../../dm-16
lrwxrwxrwx 1 root root 11 Feb 25 11:02 /dev/disk/by-id/dm-name-mpath30-part2 -> ../../dm-17
lrwxrwxrwx 1 root root 11 Feb 25 08:29 /dev/disk/by-id/dm-name-mpath30-part3 -> ../../dm-69
lrwxrwxrwx 1 root root 11 Feb 25 08:29 /dev/disk/by-id/dm-name-mpath30-part4 -> ../../dm-70
lrwxrwxrwx 1 root root 11 Feb 25 19:52 /dev/disk/by-id/raid-mpath30 -> ../../dm-13
lrwxrwxrwx 1 root root 11 Feb 25 11:02 /dev/disk/by-id/raid-mpath30-part1-part1 -> ../../dm-16
lrwxrwxrwx 1 root root 11 Feb 25 11:02 /dev/disk/by-id/raid-mpath30-part2-part2 -> ../../dm-17
lrwxrwxrwx 1 root root 11 Feb 25 08:29 /dev/disk/by-id/raid-mpath30-part3-part3 -> ../../dm-69
lrwxrwxrwx 1 root root 11 Feb 25 08:29 /dev/disk/by-id/raid-mpath30-part4-part4 -> ../../dm-70
root at zap06:~# ll /dev/dm-* | egrep "13|16|69|70"
brw-rw---- 1 root disk 252, 13 Feb 25 19:52 /dev/dm-13
brw-rw---- 1 root disk 252, 16 Feb 25 11:02 /dev/dm-16
brw-rw---- 1 root disk 252, 69 Feb 25 08:29 /dev/dm-69
brw-rw---- 1 root disk 252, 70 Feb 25 08:29 /dev/dm-70
Running partprobe should fix this, but it doesn't. Running with
strace sheds a little light (full output attached):
root at zap06:~# strace partprobe /dev/mapper/mpath30
execve("/sbin/partprobe", ["partprobe", "/dev/mapper/mpath30"], [/* 37 vars */]) = 0
brk(0) = 0x10009930000
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
...
getrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
statfs("/sys/fs/selinux", 0x3fffc2e8fe70) = -1 ENOENT (No such file or directory)
statfs("/selinux", 0x3fffc2e8fe70) = -1 ENOENT (No such file or directory)
brk(0) = 0x10009930000
brk(0x10009960000) = 0x10009960000
open("/proc/filesystems", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x3fff788f0000
read(3, "nodev\tsysfs\nnodev\trootfs\nnodev\tr"..., 1024) = 337
read(3, "", 1024) = 0
close(3) = 0
munmap(0x3fff788f0000, 4096) = 0
open("/usr/lib/locale/locale-archive", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=2919792, ...}) = 0
mmap(NULL, 2919792, PROT_READ, MAP_PRIVATE, 3, 0) = 0x3fff781b0000
close(3) = 0
semctl(0, 0, SEM_INFO, 0x3fffc2e8f878) = 0
open("/etc/udev/udev.conf", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=153, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x3fff788f0000
read(3, "# see udev.conf(5) for details\n#"..., 4096) = 153
read(3, "", 4096) = 0
close(3) = 0
munmap(0x3fff788f0000, 4096) = 0
access("/run/udev/control", F_OK) = 0
stat("/dev/mapper/mpath30", {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 13), ...}) = 0
open("/proc/devices", O_RDONLY) = 3
read(3, "Character devices:\n 1 mem\n 4 /"..., 16384) = 469
read(3, "", 16384) = 0
close(3) = 0
uname({sys="Linux", node="zap06", ...}) = 0
stat("/dev/mapper/control", {st_mode=S_IFCHR|0600, st_rdev=makedev(10, 236), ...}) = 0
open("/dev/mapper/control", O_RDWR) = 3
open("/proc/devices", O_RDONLY) = 4
fstat(4, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x3fff788f0000
read(4, "Character devices:\n 1 mem\n 4 /"..., 1024) = 469
close(4) = 0
munmap(0x3fff788f0000, 4096) = 0
ioctl(3, DM_VERSION, 0x10009931350) = 0
ioctl(3, DM_TABLE_STATUS, 0x10009931280) = 0
open("/usr/share/locale/locale.alias", O_RDONLY|O_CLOEXEC) = 4
fstat(4, {st_mode=S_IFREG|0644, st_size=2570, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x3fff788f0000
read(4, "# Locale name alias data base.\n#"..., 4096) = 2570
read(4, "", 4096) = 0
close(4) = 0
munmap(0x3fff788f0000, 4096) = 0
...
stat("/dev/mapper/mpath30", {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 13), ...}) = 0
open("/dev/mapper/mpath30", O_RDWR) = 4
ioctl(4, BLKFLSBUF, 0x3fffc2e8f8c8) = 0
ioctl(3, DM_DEV_STATUS, 0x10009935330) = 0
stat("/dev/mapper/mpath30p1", 0x3fffc2e8f1e8) = -1 ENOENT (No such file or directory)
open("/dev/mapper/mpath30p1", O_WRONLY) = -1 ENOENT (No such file or directory)
ioctl(3, DM_DEV_STATUS, 0x10009935330) = 0
stat("/dev/mapper/mpath30p2", 0x3fffc2e8f1e8) = -1 ENOENT (No such file or directory)
open("/dev/mapper/mpath30p2", O_WRONLY) = -1 ENOENT (No such file or directory)
ioctl(3, DM_DEV_STATUS, 0x10009935330) = 0
stat("/dev/mapper/mpath30p3", 0x3fffc2e8f1e8) = -1 ENOENT (No such file or directory)
open("/dev/mapper/mpath30p3", O_WRONLY) = -1 ENOENT (No such file or directory)
...
ioctl(3, DM_DEV_STATUS, 0x10009935330) = 0
stat("/dev/mapper/mpath30p63", 0x3fffc2e8f1e8) = -1 ENOENT (No such file or directory)
open("/dev/mapper/mpath30p63", O_WRONLY) = -1 ENOENT (No such file or directory)
stat("/dev/mapper/mpath30", {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 13), ...}) = 0
uname({sys="Linux", node="zap06", ...}) = 0
ioctl(4, BLKSSZGET, 512) = 0
fadvise64(4, 0, 0, POSIX_FADV_RANDOM) = 0
fstat(4, {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 13), ...}) = 0
uname({sys="Linux", node="zap06", ...}) = 0
ioctl(4, BLKGETSIZE64, 16106127360) = 0
open("/sys/dev/block/252:13", O_RDONLY|O_CLOEXEC) = 5
openat(5, "dm/uuid", O_RDONLY|O_CLOEXEC) = 6
fcntl(6, F_GETFL) = 0x10000 (flags O_RDONLY|0x10000)
fstat(6, {st_mode=S_IFREG|0444, st_size=65536, ...}) = 0
mmap(NULL, 65536, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x3fff788f0000
lseek(6, 0, SEEK_CUR) = 0
read(6, "mpath-0QEMU\\x20\\x20\\x20\\x20QEMU\\"..., 65536) = 73
close(6) = 0
munmap(0x3fff788f0000, 65536) = 0
close(5) = 0
open("/sys/dev/block/252:13", O_RDONLY|O_CLOEXEC) = 5
newfstatat(5, "partition", 0x3fffc2e8e268, 0) = -1 ENOENT (No such file or directory)
openat(5, "dm/uuid", O_RDONLY|O_CLOEXEC) = 6
fcntl(6, F_GETFL) = 0x10000 (flags O_RDONLY|0x10000)
fstat(6, {st_mode=S_IFREG|0444, st_size=65536, ...}) = 0
mmap(NULL, 65536, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x3fff788f0000
lseek(6, 0, SEEK_CUR) = 0
read(6, "mpath-0QEMU\\x20\\x20\\x20\\x20QEMU\\"..., 65536) = 73
close(6) = 0
munmap(0x3fff788f0000, 65536) = 0
close(5) = 0
ioctl(4, CDROM_GET_CAPABILITY or SNDRV_SEQ_IOCTL_UNSUBSCRIBE_PORT, 0) = -1 EINVAL (Invalid argument)
ioctl(4, BLKALIGNOFF, 0) = 0
ioctl(4, BLKIOMIN, 512) = 0
ioctl(4, BLKIOOPT, 0) = 0
ioctl(4, BLKPBSZGET, 512) = 0
ioctl(4, BLKSSZGET, 512) = 0
ioctl(4, BLKGETSIZE64, 16106127360) = 0
ioctl(4, HDIO_GETGEO, {heads=0, sectors=0, cylinders=0, start=0}) = 0
fsync(4) = 0
close(4) = 0
open("/dev/mapper/mpath30", O_RDWR) = 4
ioctl(4, BLKFLSBUF, 0) = 0
ioctl(3, DM_DEV_STATUS, 0x10009935330) = 0
stat("/dev/mapper/mpath30p1", 0x3fffc2e8f478) = -1 ENOENT (No such file or directory)
open("/dev/mapper/mpath30p1", O_WRONLY) = -1 ENOENT (No such file or directory)
ioctl(3, DM_DEV_STATUS, 0x10009935330) = 0
stat("/dev/mapper/mpath30p2", 0x3fffc2e8f478) = -1 ENOENT (No such file or directory)
open("/dev/mapper/mpath30p2", O_WRONLY) = -1 ENOENT (No such file or directory)
...
ioctl(3, DM_DEV_STATUS, 0x10009935330) = 0
stat("/dev/mapper/mpath30p63", 0x3fffc2e8f478) = -1 ENOENT (No such file or directory)
open("/dev/mapper/mpath30p63", O_WRONLY) = -1 ENOENT (No such file or directory)
...
This looks like the naming inconsistency (mpathXpX vs. mpathX-partX)
seen in other bugs. partprobe is looking for mpathXpX, which don't
exist. Now, if it were looking for that *in addition to* the -partX
names, these would probably be benign operations. But it does not
seem to be looking for -partX names at all, looking at the full trace
(attached).
Finally, here is udevadm output from the "partprobe" operation, which
seems to show it operating only on the mpath30 device, and not any of
the partition devices. The expectation is, it would find and delete
those device nodes here:
root at zap06:~# udevadm monitor -p
monitor will print the received events for:
UDEV - the event which udev sends out after rule processing
KERNEL - the kernel uevent
KERNEL[42248.218780] change /devices/virtual/block/dm-13 (block)
ACTION=change
DEVNAME=/dev/dm-13
DEVPATH=/devices/virtual/block/dm-13
DEVTYPE=disk
MAJOR=252
MINOR=13
SEQNUM=5073
SUBSYSTEM=block
UDEV [42248.257687] change /devices/virtual/block/dm-13 (block)
ACTION=change
DEVLINKS=/dev/disk/by-id/dm-name-mpath30 /dev/disk/by-id/dm-uuid-mpath-0QEMU\x20\x20\x20\x20QEMU\x20HARDDISK\x20\x20\x20drive-scsi0-0-8-0 /dev/disk/by-id/raid-mpath30 /dev/mapper/mpath30
DEVNAME=/dev/dm-13
DEVPATH=/devices/virtual/block/dm-13
DEVTYPE=disk
DM_NAME=mpath30
DM_STATE=ACTIVE
DM_SUSPENDED=0
DM_TABLE_STATE=LIVE
DM_TYPE=raid
DM_UDEV_PRIMARY_SOURCE_FLAG=1
DM_UDEV_RULES=1
DM_UUID=mpath-0QEMU QEMU HARDDISK drive-scsi0-0-8-0
ID_PART_TABLE_TYPE=dos
ID_PART_TABLE_UUID=b4a0cad2
MAJOR=252
MINOR=13
SEQNUM=5073
SUBSYSTEM=block
USEC_INITIALIZED=17066
nomdmonddf=1
nomdmonisw=1
KERNEL[42248.272300] change /devices/virtual/block/dm-13 (block)
ACTION=change
DEVNAME=/dev/dm-13
DEVPATH=/devices/virtual/block/dm-13
DEVTYPE=disk
MAJOR=252
MINOR=13
SEQNUM=5074
SUBSYSTEM=block
UDEV [42248.297519] change /devices/virtual/block/dm-13 (block)
ACTION=change
DEVLINKS=/dev/disk/by-id/dm-name-mpath30 /dev/disk/by-id/dm-uuid-mpath-0QEMU\x20\x20\x20\x20QEMU\x20HARDDISK\x20\x20\x20drive-scsi0-0-8-0 /dev/disk/by-id/raid-mpath30 /dev/mapper/mpath30
DEVNAME=/dev/dm-13
DEVPATH=/devices/virtual/block/dm-13
DEVTYPE=disk
DM_NAME=mpath30
DM_STATE=ACTIVE
DM_SUSPENDED=0
DM_TABLE_STATE=LIVE
DM_TYPE=raid
DM_UDEV_PRIMARY_SOURCE_FLAG=1
DM_UDEV_RULES=1
DM_UUID=mpath-0QEMU QEMU HARDDISK drive-scsi0-0-8-0
ID_PART_TABLE_TYPE=dos
ID_PART_TABLE_UUID=b4a0cad2
MAJOR=252
MINOR=13
SEQNUM=5074
SUBSYSTEM=block
USEC_INITIALIZED=17066
nomdmonddf=1
nomdmonisw=1
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