Project

General

Profile

Actions

Support #15268

closed

CephFS mount blocks VM

Added by Joao Castro about 8 years ago. Updated over 7 years ago.

Status:
Resolved
Priority:
Normal
Assignee:
Category:
-
Target version:
-
% Done:

0%

Tags:
Reviewed:
Affected Versions:
Component(FS):
Labels (FS):
Pull request ID:

Description

cat /proc/modules | grep -i ceph
ceph 315392 0 - Live 0xffffffffc0460000
libceph 241664 1 ceph, Live 0xffffffffc0411000
libcrc32c 16384 1 libceph, Live 0xffffffffc02f5000
fscache 65536 1 ceph, Live 0xffffffffc039e000

Trace:

execve("/bin/mount", ["mount", "-t", "ceph", "10.100.2.102:6789:/", "/mnt/", "-o", "name=admin,secret=SECRETKEY"...], [/* 32 vars */]) = 0
brk(0) = 0xc33000
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f97d28bb000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=24644, ...}) = 0
mmap(NULL, 24644, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f97d28b4000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libblkid.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\320^\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=155384, ...}) = 0
mmap(NULL, 2250504, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f97d2475000
mprotect(0x7f97d2498000, 2093056, PROT_NONE) = 0
mmap(0x7f97d2697000, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x22000) = 0x7f97d2697000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libselinux.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\0[\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=134296, ...}) = 0
mmap(NULL, 2238192, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f97d2252000
mprotect(0x7f97d2272000, 2093056, PROT_NONE) = 0
mmap(0x7f97d2471000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1f000) = 0x7f97d2471000
mmap(0x7f97d2473000, 5872, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f97d2473000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libmount.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\260Z\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=154648, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f97d28b3000
mmap(NULL, 2249736, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f97d202c000
mprotect(0x7f97d2051000, 2093056, PROT_NONE) = 0
mmap(0x7f97d2250000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x24000) = 0x7f97d2250000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\320\37\2\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1840928, ...}) = 0
mmap(NULL, 3949248, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f97d1c67000
mprotect(0x7f97d1e22000, 2093056, PROT_NONE) = 0
mmap(0x7f97d2021000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1ba000) = 0x7f97d2021000
mmap(0x7f97d2027000, 17088, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f97d2027000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libuuid.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0`\26\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=18936, ...}) = 0
mmap(NULL, 2113968, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f97d1a62000
mprotect(0x7f97d1a66000, 2093056, PROT_NONE) = 0
mmap(0x7f97d1c65000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3000) = 0x7f97d1c65000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libpcre.so.3", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\260\27\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=252032, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f97d28b2000
mmap(NULL, 2347200, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f97d1824000
mprotect(0x7f97d1861000, 2093056, PROT_NONE) = 0
mmap(0x7f97d1a60000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3c000) = 0x7f97d1a60000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libdl.so.2", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\320\16\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=14664, ...}) = 0
mmap(NULL, 2109744, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f97d1620000
mprotect(0x7f97d1623000, 2093056, PROT_NONE) = 0
mmap(0x7f97d1822000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7f97d1822000
close(3) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f97d28b1000
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f97d28af000
arch_prctl(ARCH_SET_FS, 0x7f97d28af880) = 0
mprotect(0x7f97d2021000, 16384, PROT_READ) = 0
mprotect(0x7f97d1822000, 4096, PROT_READ) = 0
mprotect(0x7f97d1a60000, 4096, PROT_READ) = 0
mprotect(0x7f97d1c65000, 4096, PROT_READ) = 0
mprotect(0x7f97d2697000, 12288, PROT_READ) = 0
mprotect(0x7f97d2471000, 4096, PROT_READ) = 0
mprotect(0x7f97d2250000, 4096, PROT_READ) = 0
mprotect(0x615000, 4096, PROT_READ) = 0
mprotect(0x7f97d28bd000, 4096, PROT_READ) = 0
munmap(0x7f97d28b4000, 24644) = 0
statfs("/sys/fs/selinux", 0x7ffcdf7a5bd0) = -1 ENOENT (No such file or directory)
statfs("/selinux", 0x7ffcdf7a5bd0) = -1 ENOENT (No such file or directory)
brk(0) = 0xc33000
brk(0xc54000) = 0xc54000
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) = 0x7f97d28ba000
read(3, "nodev\tsysfs\nnodev\trootfs\nnodev\tr"..., 1024) = 308
read(3, "", 1024) = 0
close(3) = 0
munmap(0x7f97d28ba000, 4096) = 0
open("/usr/lib/locale/locale-archive", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=2928048, ...}) = 0
mmap(NULL, 2928048, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f97d1355000
close(3) = 0
open("/usr/share/locale/locale.alias", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=2570, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f97d28ba000
read(3, "# Locale name alias data base.\n#"..., 4096) = 2570
read(3, "", 4096) = 0
close(3) = 0
munmap(0x7f97d28ba000, 4096) = 0
open("/usr/lib/locale/en_US/LC_IDENTIFICATION", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/usr/lib/locale/en/LC_IDENTIFICATION", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/usr/share/locale-langpack/en_US/LC_IDENTIFICATION", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/usr/share/locale-langpack/en/LC_IDENTIFICATION", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
umask(022) = 022
open("/dev/null", O_RDWR) = 3
close(3) = 0
getuid() = 0
geteuid() = 0
getcwd("/root", 4095) = 6
readlink("/root/10.100.2.102:6789:", 0x7ffcdf7a3a80, 4096) = -1 ENOENT (No such file or directory)
stat("/sbin/mount.ceph", {st_mode=S_IFREG|0755, st_size=30696, ...}) = 0
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f97d28afb50) = 1314
wait4(-1,

Blocks on wait4.
VM is blocked.
Running on proxmox...

Any help?

Thanks! :)


Files

dmesg (238 KB) dmesg Joao Castro, 03/29/2016 08:32 AM
Actions #1

Updated by Greg Farnum about 8 years ago

  • Tracker changed from Bug to Support

You'll need to provide a little more context. You're just trying to mount CephFS inside of a VM, and the mount is hanging, right?

Do you have any evidence Ceph is working? What's the output of "ceph -s", when run from the VM?

Actions #2

Updated by Joao Castro about 8 years ago

Greg Farnum wrote:

You'll need to provide a little more context. You're just trying to mount CephFS inside of a VM, and the mount is hanging, right?

Do you have any evidence Ceph is working? What's the output of "ceph -s", when run from the VM?

Hi Greg, and thanks!

Yes, exactly.

output of ceph -s

root@monitor01:~# ceph -s
cluster e89f0d5a-2a8a-4893-bd8d-e8d1fe9b11c7
health HEALTH_OK
monmap e2: 2 mons at {monitor01=10.100.2.101:6789/0,monitor02=10.100.2.102:6789/0}
election epoch 4, quorum 0,1 monitor02,monitor01
mdsmap e5: 1/1/1 up {0=mds01=up:active}
osdmap e74: 5 osds: 5 up, 5 in
flags sortbitwise
pgmap v237: 484 pgs, 4 pools, 1316 MB data, 350 objects
4135 MB used, 21409 MB / 25544 MB avail
484 active+clean

Actions #3

Updated by Joao Castro about 8 years ago

Joao Castro wrote:

Greg Farnum wrote:

You'll need to provide a little more context. You're just trying to mount CephFS inside of a VM, and the mount is hanging, right?

Do you have any evidence Ceph is working? What's the output of "ceph -s", when run from the VM?

Hi Greg, and thanks!

Yes, exactly.

output of ceph -s

root@monitor01:~# ceph -s
cluster e89f0d5a-2a8a-4893-bd8d-e8d1fe9b11c7
health HEALTH_OK
monmap e2: 2 mons at {monitor01=10.100.2.101:6789/0,monitor02=10.100.2.102:6789/0}
election epoch 4, quorum 0,1 monitor02,monitor01
mdsmap e5: 1/1/1 up {0=mds01=up:active}
osdmap e74: 5 osds: 5 up, 5 in
flags sortbitwise
pgmap v237: 484 pgs, 4 pools, 1316 MB data, 350 objects
4135 MB used, 21409 MB / 25544 MB avail
484 active+clean

PS: ceph-fuse works ok!

Actions #4

Updated by Greg Farnum about 8 years ago

  • Assignee set to Zheng Yan

Hmm, if it were newer features in userspace than in the kernel you should be getting errors. Zheng, any idea?

Actions #5

Updated by Joao Castro about 8 years ago

Trying to mount it on a EC2 machine

Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.756137] INFO: task mount.ceph:10710 blocked for more than 120 seconds.
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.760028] Not tainted 3.13.0-74-generic #118-Ubuntu
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.763132] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767373] mount.ceph D ffff88001fc13180 0 10710 1 0x00000000
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767376] ffff880014461c88 0000000000000086 ffff88001c389800 ffff880014461fd8
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767379] 0000000000013180 0000000000013180 ffff88001c389800 ffff88001c389800
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767380] ffff880010f94868 ffff880010f94870 ffffffff00000000 ffff880010f94878
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767382] Call Trace:
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767388] [<ffffffff81728f79>] schedule+0x29/0x70
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767391] [<ffffffff8172bbf5>] rwsem_down_write_failed+0x115/0x230
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767398] [<ffffffffa00ff790>] ? ceph_inode_init_once+0x20/0x20 [ceph]
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767402] [<ffffffff813737f3>] call_rwsem_down_write_failed+0x13/0x20
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767405] [<ffffffff81152602>] ? mempool_create_node+0x72/0x140
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767412] [<ffffffffa011e176>] ? ceph_mdsc_init+0x66/0x2a0 [ceph]
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767414] [<ffffffff8172b60d>] ? down_write+0x2d/0x30
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767418] [<ffffffff811c0f1e>] grab_super+0x2e/0xa0
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767419] [<ffffffff811c1590>] sget+0x2d0/0x400
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767422] [<ffffffffa00ff1b0>] ? ceph_kill_sb+0x60/0x60 [ceph]
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767426] [<ffffffffa0100183>] ceph_mount+0x303/0x830 [ceph]
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767428] [<ffffffff811c23e9>] mount_fs+0x39/0x1b0
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767430] [<ffffffff811dd8a7>] vfs_kern_mount+0x67/0x110
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767432] [<ffffffff811e017f>] do_mount+0x25f/0xcd0
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767434] [<ffffffff811e0ee3>] SyS_mount+0x83/0xc0
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767437] [<ffffffff8173575d>] system_call_fastpath+0x1a/0x1f

Actions #6

Updated by Joao Castro about 8 years ago

Joao Castro wrote:

Trying to mount it on a EC2 machine

Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.756137] INFO: task mount.ceph:10710 blocked for more than 120 seconds.
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.760028] Not tainted 3.13.0-74-generic #118-Ubuntu
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.763132] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767373] mount.ceph D ffff88001fc13180 0 10710 1 0x00000000
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767376] ffff880014461c88 0000000000000086 ffff88001c389800 ffff880014461fd8
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767379] 0000000000013180 0000000000013180 ffff88001c389800 ffff88001c389800
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767380] ffff880010f94868 ffff880010f94870 ffffffff00000000 ffff880010f94878
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767382] Call Trace:
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767388] [<ffffffff81728f79>] schedule+0x29/0x70
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767391] [<ffffffff8172bbf5>] rwsem_down_write_failed+0x115/0x230
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767398] [<ffffffffa00ff790>] ? ceph_inode_init_once+0x20/0x20 [ceph]
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767402] [<ffffffff813737f3>] call_rwsem_down_write_failed+0x13/0x20
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767405] [<ffffffff81152602>] ? mempool_create_node+0x72/0x140
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767412] [<ffffffffa011e176>] ? ceph_mdsc_init+0x66/0x2a0 [ceph]
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767414] [<ffffffff8172b60d>] ? down_write+0x2d/0x30
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767418] [<ffffffff811c0f1e>] grab_super+0x2e/0xa0
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767419] [<ffffffff811c1590>] sget+0x2d0/0x400
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767422] [<ffffffffa00ff1b0>] ? ceph_kill_sb+0x60/0x60 [ceph]
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767426] [<ffffffffa0100183>] ceph_mount+0x303/0x830 [ceph]
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767428] [<ffffffff811c23e9>] mount_fs+0x39/0x1b0
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767430] [<ffffffff811dd8a7>] vfs_kern_mount+0x67/0x110
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767432] [<ffffffff811e017f>] do_mount+0x25f/0xcd0
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767434] [<ffffffff811e0ee3>] SyS_mount+0x83/0xc0
Mar 27 10:37:25 ip-172-31-5-103 kernel: [ 1320.767437] [<ffffffff8173575d>] system_call_fastpath+0x1a/0x1f

On CentOS it mounts without any issue.

UBUNTU modules

Kernel: 3.19.0-56-generic

ceph 315392 0 - Live 0xffffffffc0523000
libceph 241664 1 ceph, Live 0xffffffffc04d4000
libcrc32c 16384 1 libceph, Live 0xffffffffc03f4000
fscache 65536 1 ceph, Live 0xffffffffc0450000

CentOS modules

Kernel: 3.10.0-327.10.1.el7.x86_64

ceph 305045 1 - Live 0xffffffffa030a000
libceph 244999 1 ceph, Live 0xffffffffa02ba000
dns_resolver 13140 1 libceph, Live 0xffffffffa02b5000
libcrc32c 12644 2 libceph,xfs, Live 0xffffffffa0176000

Actions #7

Updated by Zheng Yan about 8 years ago

grab_super+0x2e is down_write(&s->s_umount). the backtrace show there is already a mounted cephfs, you tried mounting the same fs again. This is wired, please run "echo t > /proc/sysrq-trigger; dmesg > dmseg" and upload the dmesg.

Actions #8

Updated by Joao Castro about 8 years ago

Zheng Yan wrote:

grab_super+0x2e is down_write(&s->s_umount). the backtrace show there is already a mounted cephfs, you tried mounting the same fs again. This is wired, please run "echo t > /proc/sysrq-trigger; dmesg > dmseg" and upload the dmesg.

Thanks Zheng!
I uploaded it.

Actions #9

Updated by Zheng Yan about 8 years ago

  • Status changed from New to 4

Sorry for the delay. This seems like duplicate of http://tracker.ceph.com/issues/15302

Actions #10

Updated by Greg Farnum over 7 years ago

  • Status changed from 4 to Resolved
Actions

Also available in: Atom PDF