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Date: Mon, 22 Jun 2015 18:36:30 +0000
From: bugzilla-daemon@...zilla.kernel.org
To: linux-ext4@...r.kernel.org
Subject: [Bug 100321] New: General protection fault (stalls the machine) with
jbd2 and raid456
https://bugzilla.kernel.org/show_bug.cgi?id=100321
Bug ID: 100321
Summary: General protection fault (stalls the machine) with
jbd2 and raid456
Product: File System
Version: 2.5
Kernel Version: Linux xpc 4.1.0-rc8 #2 SMP Sun Jun 21 11:16:21 EEST
2015 x86_64 x86_64 x86_64 GNU/Linux
Hardware: IA-64
OS: Linux
Tree: Mainline
Status: NEW
Severity: blocking
Priority: P1
Component: ext4
Assignee: fs_ext4@...nel-bugs.osdl.org
Reporter: jouni.karvo@....fi
Regression: No
I have 5 sata disks running as raid6, on which lvm, on which server partitions
and home partition. Root partition is on separate raid1
>From boot it takes from two hours to two days until the whole machine crashes.
This is the kern.log excerpt from the last crash this evening.
I am running 4.1-rc8 at the moment:
Linux xpc 4.1.0-rc8 #2 SMP Sun Jun 21 11:16:21 EEST 2015 x86_64 x86_64 x86_64
GNU/Linux
Jun 22 20:55:34 xpc kernel: [26361.124389] general protection fault: 0000 [#1]
SMP
Jun 22 20:55:34 xpc kernel: [26361.124408] Modules linked in: usblp binfmt_misc
cfg80211 sp2 si2157 si2168 i2c_mux cx25840 snd_hda_codec_realtek
snd_hda_codec_generic snd_hda_codec_hdmi joydev eeepc_wmi asus_wmi
sparse_keymap mxm_wmi intel_rapl iosf_mbi x86_pkg_temp_thermal cx23885
intel_powerclamp kvm_intel altera_ci tda18271 altera_stapl kvm videobuf2_dvb
tveeprom cx2341x snd_hda_intel dvb_core snd_hda_controller hid_logitech_hidpp
rc_core i915 videobuf2_dma_sg crct10dif_pclmul snd_hda_codec videobuf2_memops
crc32_pclmul videobuf2_core ghash_clmulni_intel snd_hda_core v4l2_common
snd_hwdep aesni_intel videodev snd_seq_midi aes_x86_64 snd_seq_midi_event lrw
media gf128mul snd_rawmidi snd_pcm glue_helper snd_seq ablk_helper
drm_kms_helper cryptd snd_seq_device serio_raw snd_timer drm snd mei_me
i2c_algo_bit soundcore mei lpc_ich shpchp mac_hid video wmi nfsd auth_rpcgss
nfs_acl lockd grace sunrpc nct6775 hwmon_vid coretemp parport_pc ppdev lp
parport autofs4 raid10 raid456 async_raid6_recov async_memcpy async_pq
async_xor async_tx xor raid6_pq raid1 hid_logitech_dj raid0 e1000e usbhid ahci
multipath ptp hid libahci psmouse pps_core linear
Jun 22 20:55:34 xpc kernel: [26361.124689] CPU: 6 PID: 797 Comm: jbd2/dm-1-8
Not tainted 4.1.0-rc8 #2
Jun 22 20:55:34 xpc kernel: [26361.124702] Hardware name: ASUS All
Series/MAXIMUS VI EXTREME, BIOS 1603 08/15/2014
Jun 22 20:55:34 xpc kernel: [26361.124718] task: ffff8801b66e2840 ti:
ffff8801b60a8000 task.ti: ffff8801b60a8000
Jun 22 20:55:34 xpc kernel: [26361.124732] RIP: 0010:[<ffffffffc0181490>]
[<ffffffffc0181490>] __find_stripe+0x30/0xc0 [raid456]
Jun 22 20:55:34 xpc kernel: [26361.124754] RSP: 0018:ffff8801b60ab988 EFLAGS:
00010002
Jun 22 20:55:34 xpc kernel: [26361.124765] RAX: 0001880035c19000 RBX:
0000000000000000 RCX: 0000000000000000
Jun 22 20:55:34 xpc kernel: [26361.124779] RDX: 0000000000000b98 RSI:
000000000248cb98 RDI: ffff880035c07400
Jun 22 20:55:34 xpc kernel: [26361.124793] RBP: ffff8801b60ab9a8 R08:
0000000000000000 R09: 0000000000000000
Jun 22 20:55:34 xpc kernel: [26361.124807] R10: 0000000000000398 R11:
0000000000000003 R12: 000000000248cb98
Jun 22 20:55:34 xpc kernel: [26361.124820] R13: ffff880035c07400 R14:
ffff880035c07414 R15: ffff880035c07400
Jun 22 20:55:34 xpc kernel: [26361.124834] FS: 0000000000000000(0000)
GS:ffff8801bfb80000(0000) knlGS:0000000000000000
Jun 22 20:55:34 xpc kernel: [26361.124849] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
Jun 22 20:55:34 xpc kernel: [26361.124860] CR2: 0000000000708470 CR3:
0000000001c0d000 CR4: 00000000001407e0
Jun 22 20:55:34 xpc kernel: [26361.124874] DR0: 0000000000000000 DR1:
0000000000000000 DR2: 0000000000000000
Jun 22 20:55:34 xpc kernel: [26361.124887] DR3: 0000000000000000 DR6:
00000000fffe0ff0 DR7: 0000000000000400
Jun 22 20:55:34 xpc kernel: [26361.124900] Stack:
Jun 22 20:55:34 xpc kernel: [26361.125844] 0000000000000000 0000000000000000
0000000000000003 ffff88019d63cb20
Jun 22 20:55:34 xpc kernel: [26361.126788] ffff8801b60aba78 ffffffffc018836d
ffff8801b8253250 0000000000000246
Jun 22 20:55:34 xpc kernel: [26361.127752] ffff8801b60aba30 ffff880035c0740c
ffff8801b60aba30 0000000000000003
Jun 22 20:55:34 xpc kernel: [26361.128699] Call Trace:
Jun 22 20:55:34 xpc kernel: [26361.129636] [<ffffffffc018836d>]
get_active_stripe+0x12d/0x7e0 [raid456]
Jun 22 20:55:34 xpc kernel: [26361.130576] [<ffffffff810bc097>] ?
prepare_to_wait+0x57/0x90
Jun 22 20:55:34 xpc kernel: [26361.131534] [<ffffffffc018e00d>]
make_request+0x19d/0xda0 [raid456]
Jun 22 20:55:34 xpc kernel: [26361.132479] [<ffffffff8165e6cb>] ?
__split_and_process_bio+0x2fb/0x3f0
Jun 22 20:55:34 xpc kernel: [26361.133410] [<ffffffff810bc3b0>] ?
wait_woken+0x90/0x90
Jun 22 20:55:34 xpc kernel: [26361.134332] [<ffffffff8164bbfc>]
md_make_request+0xdc/0x220
Jun 22 20:55:34 xpc kernel: [26361.135254] [<ffffffff8165e83a>] ?
dm_make_request+0x7a/0xd0
Jun 22 20:55:34 xpc kernel: [26361.136174] [<ffffffff81386580>]
generic_make_request+0xc0/0x110
Jun 22 20:55:34 xpc kernel: [26361.137073] [<ffffffff81386648>]
submit_bio+0x78/0x180
Jun 22 20:55:34 xpc kernel: [26361.137965] [<ffffffff812df62b>] ?
jbd2_journal_write_metadata_buffer+0x2cb/0x390
Jun 22 20:55:34 xpc kernel: [26361.138857] [<ffffffff81233d3c>]
_submit_bh+0x11c/0x190
Jun 22 20:55:34 xpc kernel: [26361.139748] [<ffffffff81233dc0>]
submit_bh+0x10/0x20
Jun 22 20:55:34 xpc kernel: [26361.140621] [<ffffffff812d7481>]
jbd2_journal_commit_transaction+0x7e1/0x1820
Jun 22 20:55:34 xpc kernel: [26361.141504] [<ffffffff8101ddd9>] ?
sched_clock+0x9/0x10
Jun 22 20:55:34 xpc kernel: [26361.142381] [<ffffffff810e50ef>] ?
try_to_del_timer_sync+0x4f/0x70
Jun 22 20:55:34 xpc kernel: [26361.143249] [<ffffffff812dbe4b>]
kjournald2+0xbb/0x250
Jun 22 20:55:34 xpc kernel: [26361.144110] [<ffffffff810bc3b0>] ?
wait_woken+0x90/0x90
Jun 22 20:55:34 xpc kernel: [26361.144957] [<ffffffff812dbd90>] ?
commit_timeout+0x10/0x10
Jun 22 20:55:34 xpc kernel: [26361.145799] [<ffffffff81098c49>]
kthread+0xc9/0xe0
Jun 22 20:55:34 xpc kernel: [26361.146634] [<ffffffff81098b80>] ?
kthread_create_on_node+0x180/0x180
Jun 22 20:55:34 xpc kernel: [26361.147470] [<ffffffff817e2de2>]
ret_from_fork+0x42/0x70
Jun 22 20:55:34 xpc kernel: [26361.148283] [<ffffffff81098b80>] ?
kthread_create_on_node+0x180/0x180
Jun 22 20:55:34 xpc kernel: [26361.149094] Code: 55 48 89 e5 41 55 41 54 53 49
89 fd 49 89 f4 89 d3 48 83 ec 08 f6 05 39 1b 01 00 04 75 5e 49 8b 45 00 4c 89
e2 81 e2 f8 0f 00 00 <48> 8b 04 02 48 85 c0 75 2d 31 db f6 05 f0 1a 01 00 04 75
57 48
Jun 22 20:55:34 xpc kernel: [26361.149989] RIP [<ffffffffc0181490>]
__find_stripe+0x30/0xc0 [raid456]
Jun 22 20:55:34 xpc kernel: [26361.150833] RSP <ffff8801b60ab988>
Jun 22 20:55:34 xpc kernel: [26361.156521] ---[ end trace c430f52499aa3b3a ]---
Jun 22 20:55:36 xpc kernel: [26363.223855] general protection fault: 0000 [#2]
SMP
Jun 22 20:55:36 xpc kernel: [26363.225306] Modules linked in: usblp binfmt_misc
cfg80211 sp2 si2157 si2168 i2c_mux cx25840 snd_hda_codec_realtek
snd_hda_codec_generic snd_hda_codec_hdmi joydev eeepc_wmi asus_wmi
sparse_keymap mxm_wmi intel_rapl iosf_mbi x86_pkg_temp_thermal cx23885
intel_powerclamp kvm_intel altera_ci tda18271 altera_stapl kvm videobuf2_dvb
tveeprom cx2341x snd_hda_intel dvb_core snd_hda_controller hid_logitech_hidpp
rc_core i915 videobuf2_dma_sg crct10dif_pclmul snd_hda_codec videobuf2_memops
crc32_pclmul videobuf2_core ghash_clmulni_intel snd_hda_core v4l2_common
snd_hwdep aesni_intel videodev snd_seq_midi aes_x86_64 snd_seq_midi_event lrw
media gf128mul snd_rawmidi snd_pcm glue_helper snd_seq ablk_helper
drm_kms_helper cryptd snd_seq_device serio_raw snd_timer drm snd mei_me
i2c_algo_bit soundcore mei lpc_ich shpchp mac_hid video wmi nfsd auth_rpcgss
nfs_acl lockd grace sunrpc nct6775 hwmon_vid coretemp parport_pc ppdev lp
parport autofs4 raid10 raid456 async_raid6_recov async_memcpy async_pq
async_xor async_tx xor raid6_pq raid1 hid_logitech_dj raid0 e1000e usbhid ahci
multipath ptp hid libahci psmouse pps_core linear
Jun 22 20:55:36 xpc kernel: [26363.233599] CPU: 5 PID: 22633 Comm:
kworker/u16:1 Tainted: G D 4.1.0-rc8 #2
Jun 22 20:55:36 xpc kernel: [26363.235288] Hardware name: ASUS All
Series/MAXIMUS VI EXTREME, BIOS 1603 08/15/2014
Jun 22 20:55:36 xpc kernel: [26363.236982] Workqueue: writeback
bdi_writeback_workfn (flush-252:1)
Jun 22 20:55:36 xpc kernel: [26363.238665] task: ffff880020984670 ti:
ffff880071bfc000 task.ti: ffff880071bfc000
Jun 22 20:55:36 xpc kernel: [26363.240340] RIP: 0010:[<ffffffffc0181490>]
[<ffffffffc0181490>] __find_stripe+0x30/0xc0 [raid456]
Jun 22 20:55:36 xpc kernel: [26363.242027] RSP: 0018:ffff880071bff578 EFLAGS:
00010002
Jun 22 20:55:36 xpc kernel: [26363.243693] RAX: 0001880035c19000 RBX:
0000000000000000 RCX: 0000000000000000
Jun 22 20:55:36 xpc kernel: [26363.245370] RDX: 0000000000000368 RSI:
000000005047f368 RDI: ffff880035c07400
Jun 22 20:55:36 xpc kernel: [26363.247046] RBP: ffff880071bff598 R08:
0000000000000000 R09: 0000000000000000
Jun 22 20:55:36 xpc kernel: [26363.248704] R10: 0000000000000368 R11:
0000000000000000 R12: 000000005047f368
Jun 22 20:55:36 xpc kernel: [26363.250343] R13: ffff880035c07400 R14:
ffff880035c0741c R15: ffff880035c07400
Jun 22 20:55:36 xpc kernel: [26363.251937] FS: 0000000000000000(0000)
GS:ffff8801bfb40000(0000) knlGS:0000000000000000
Jun 22 20:55:36 xpc kernel: [26363.253493] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
Jun 22 20:55:36 xpc kernel: [26363.254996] CR2: 00007f25ff0651a0 CR3:
0000000001c0d000 CR4: 00000000001407e0
Jun 22 20:55:36 xpc kernel: [26363.256456] DR0: 0000000000000000 DR1:
0000000000000000 DR2: 0000000000000000
Jun 22 20:55:36 xpc kernel: [26363.257861] DR3: 0000000000000000 DR6:
00000000fffe0ff0 DR7: 0000000000000400
Jun 22 20:55:36 xpc kernel: [26363.259226] Stack:
Jun 22 20:55:36 xpc kernel: [26363.260574] ffff8801bfa94e40 0000000000000000
0000000000000005 ffff88011a296620
Jun 22 20:55:36 xpc kernel: [26363.261945] ffff880071bff668 ffffffffc018836d
000000005047e3f8 ffff88011a296620
Jun 22 20:55:36 xpc kernel: [26363.263303] 00000000ffffffff ffff880035c07414
000000000000ffff 0000000000000005
Jun 22 20:55:36 xpc kernel: [26363.264653] Call Trace:
Jun 22 20:55:36 xpc kernel: [26363.265994] [<ffffffffc018836d>]
get_active_stripe+0x12d/0x7e0 [raid456]
Jun 22 20:55:36 xpc kernel: [26363.267351] [<ffffffff81186600>] ?
mempool_alloc+0x20/0x150
Jun 22 20:55:36 xpc kernel: [26363.268706] [<ffffffff810bc097>] ?
prepare_to_wait+0x57/0x90
Jun 22 20:55:36 xpc kernel: [26363.270064] [<ffffffffc018e00d>]
make_request+0x19d/0xda0 [raid456]
Jun 22 20:55:36 xpc kernel: [26363.271420] [<ffffffff8165e6cb>] ?
__split_and_process_bio+0x2fb/0x3f0
Jun 22 20:55:36 xpc kernel: [26363.272770] [<ffffffff810bc3b0>] ?
wait_woken+0x90/0x90
Jun 22 20:55:36 xpc kernel: [26363.274111] [<ffffffff8164bbfc>]
md_make_request+0xdc/0x220
Jun 22 20:55:36 xpc kernel: [26363.275446] [<ffffffff8165e83a>] ?
dm_make_request+0x7a/0xd0
Jun 22 20:55:36 xpc kernel: [26363.276784] [<ffffffff81386580>]
generic_make_request+0xc0/0x110
Jun 22 20:55:36 xpc kernel: [26363.278132] [<ffffffff81386648>]
submit_bio+0x78/0x180
Jun 22 20:55:36 xpc kernel: [26363.279469] [<ffffffff8118ed32>] ?
__test_set_page_writeback+0x132/0x1b0
Jun 22 20:55:36 xpc kernel: [26363.280805] [<ffffffff8128dd19>]
ext4_io_submit+0x29/0x60
Jun 22 20:55:36 xpc kernel: [26363.282131] [<ffffffff8128dee8>]
ext4_bio_write_page+0x168/0x410
Jun 22 20:55:36 xpc kernel: [26363.283460] [<ffffffff811be580>] ?
page_referenced_one+0x190/0x190
Jun 22 20:55:36 xpc kernel: [26363.284783] [<ffffffff81284c71>]
mpage_submit_page+0x61/0x90
Jun 22 20:55:36 xpc kernel: [26363.286097] [<ffffffff81284db0>]
mpage_process_page_bufs+0x110/0x120
Jun 22 20:55:36 xpc kernel: [26363.287409] [<ffffffff81285f8d>]
mpage_prepare_extent_to_map+0x1dd/0x2d0
Jun 22 20:55:36 xpc kernel: [26363.288722] [<ffffffff8128a03c>]
ext4_writepages+0x38c/0xca0
Jun 22 20:55:36 xpc kernel: [26363.290031] [<ffffffff813b94e4>] ?
cpumask_next_and+0x44/0x50
Jun 22 20:55:36 xpc kernel: [26363.291339] [<ffffffff811910fe>]
do_writepages+0x1e/0x30
Jun 22 20:55:36 xpc kernel: [26363.292646] [<ffffffff8122a755>]
__writeback_single_inode+0x45/0x2c0
Jun 22 20:55:36 xpc kernel: [26363.293958] [<ffffffff8122ac2d>]
writeback_sb_inodes+0x25d/0x450
Jun 22 20:55:36 xpc kernel: [26363.295268] [<ffffffff8122aebf>]
__writeback_inodes_wb+0x9f/0xd0
Jun 22 20:55:36 xpc kernel: [26363.296578] [<ffffffff8122b113>]
wb_writeback+0x223/0x2c0
Jun 22 20:55:36 xpc kernel: [26363.297883] [<ffffffff81218541>] ?
get_nr_inodes+0x51/0x80
Jun 22 20:55:36 xpc kernel: [26363.299181] [<ffffffff8122b78c>]
bdi_writeback_workfn+0x1cc/0x440
Jun 22 20:55:36 xpc kernel: [26363.300485] [<ffffffff81092bf8>]
process_one_work+0x158/0x440
Jun 22 20:55:36 xpc kernel: [26363.301785] [<ffffffff8109375b>]
worker_thread+0x5b/0x540
Jun 22 20:55:36 xpc kernel: [26363.303078] [<ffffffff81093700>] ?
rescuer_thread+0x3a0/0x3a0
Jun 22 20:55:36 xpc kernel: [26363.304369] [<ffffffff81098c49>]
kthread+0xc9/0xe0
Jun 22 20:55:36 xpc kernel: [26363.305655] [<ffffffff81098b80>] ?
kthread_create_on_node+0x180/0x180
Jun 22 20:55:36 xpc kernel: [26363.306950] [<ffffffff817e2de2>]
ret_from_fork+0x42/0x70
Jun 22 20:55:36 xpc kernel: [26363.308245] [<ffffffff81098b80>] ?
kthread_create_on_node+0x180/0x180
Jun 22 20:55:36 xpc kernel: [26363.309545] Code: 55 48 89 e5 41 55 41 54 53 49
89 fd 49 89 f4 89 d3 48 83 ec 08 f6 05 39 1b 01 00 04 75 5e 49 8b 45 00 4c 89
e2 81 e2 f8 0f 00 00 <48> 8b 04 02 48 85 c0 75 2d 31 db f6 05 f0 1a 01 00 04 75
57 48
Jun 22 20:55:36 xpc kernel: [26363.310985] RIP [<ffffffffc0181490>]
__find_stripe+0x30/0xc0 [raid456]
Jun 22 20:55:36 xpc kernel: [26363.312362] RSP <ffff880071bff578>
Jun 22 20:55:36 xpc kernel: [26363.313736] ---[ end trace c430f52499aa3b3b ]---
Jun 22 20:55:36 xpc kernel: [26363.313786] BUG: unable to handle kernel paging
request at ffffffffffffffd8
The filesystems on LVM:
sudo tune2fs -l /dev//mapper/xpcvg-home
tune2fs 1.42.12 (29-Aug-2014)
Filesystem volume name: <none>
Last mounted on: /home
Filesystem UUID: db583624-afb4-41cb-8b2d-640bee2de61b
Filesystem magic number: 0xEF53
Filesystem revision #: 1 (dynamic)
Filesystem features: has_journal ext_attr resize_inode dir_index filetype
needs_recovery extent sparse_super large_file uninit_bg
Filesystem flags: signed_directory_hash
Default mount options: (none)
Filesystem state: clean
Errors behavior: Continue
Filesystem OS type: Linux
Inode count: 65536000
Block count: 262144000
Reserved block count: 13107200
Free blocks: 199344244
Free inodes: 65338714
First block: 0
Block size: 4096
Fragment size: 4096
Reserved GDT blocks: 961
Blocks per group: 32768
Fragments per group: 32768
Inodes per group: 8192
Inode blocks per group: 512
RAID stride: 128
RAID stripe width: 384
Filesystem created: Mon Jul 25 12:23:50 2011
Last mount time: Mon Jun 22 21:07:06 2015
Last write time: Mon Jun 22 21:07:06 2015
Mount count: 35
Maximum mount count: 157
Last checked: Mon Jun 15 12:21:47 2015
Check interval: 15552000 (6 months)
Next check after: Sat Dec 12 11:21:47 2015
Lifetime writes: 500 GB
Reserved blocks uid: 0 (user root)
Reserved blocks gid: 0 (group root)
First inode: 11
Inode size: 256
Required extra isize: 28
Desired extra isize: 28
Journal inode: 8
First orphan inode: 65143016
Default directory hash: half_md4
Directory Hash Seed: ea4a0233-d8af-4c51-9302-140a4affacdf
Journal backup: inode blocks
sudo tune2fs -l /dev//mapper/xpcvg-data
tune2fs 1.42.12 (29-Aug-2014)
Filesystem volume name: <none>
Last mounted on: /backup
Filesystem UUID: 1949c800-eb8c-4368-b809-3e2606c33d83
Filesystem magic number: 0xEF53
Filesystem revision #: 1 (dynamic)
Filesystem features: has_journal ext_attr resize_inode dir_index filetype
needs_recovery extent sparse_super large_file uninit_bg
Filesystem flags: signed_directory_hash
Default mount options: (none)
Filesystem state: clean
Errors behavior: Continue
Filesystem OS type: Linux
Inode count: 42008576
Block count: 168034304
Reserved block count: 8401715
Free blocks: 114693777
Free inodes: 42005415
First block: 0
Block size: 4096
Fragment size: 4096
Reserved GDT blocks: 983
Blocks per group: 32768
Fragments per group: 32768
Inodes per group: 8192
Inode blocks per group: 512
RAID stride: 128
RAID stripe width: 384
Filesystem created: Sun Jul 10 16:17:30 2011
Last mount time: Mon Jun 22 21:04:50 2015
Last write time: Mon Jun 22 21:04:50 2015
Mount count: 40
Maximum mount count: 157
Last checked: Sat Jun 6 22:02:49 2015
Check interval: 15552000 (6 months)
Next check after: Thu Dec 3 21:02:49 2015
Lifetime writes: 1889 GB
Reserved blocks uid: 0 (user root)
Reserved blocks gid: 0 (group root)
First inode: 11
Inode size: 256
Required extra isize: 28
Desired extra isize: 28
Journal inode: 8
Default directory hash: half_md4
Directory Hash Seed: a45f9ba2-ceb3-4a22-ab77-a2d5af71b82a
Journal backup: inode blocks
sudo tune2fs -l /dev//mapper/xpcvg-video
tune2fs 1.42.12 (29-Aug-2014)
Filesystem volume name: <none>
Last mounted on: /var/lib/video.00
Filesystem UUID: 0a8f2b37-4a27-4a06-b236-971af0cf1907
Filesystem magic number: 0xEF53
Filesystem revision #: 1 (dynamic)
Filesystem features: has_journal ext_attr resize_inode dir_index filetype
needs_recovery extent sparse_super large_file uninit_bg
Filesystem flags: signed_directory_hash
Default mount options: (none)
Filesystem state: clean
Errors behavior: Continue
Filesystem OS type: Linux
Inode count: 256114688
Block count: 1024458752
Reserved block count: 51222927
Free blocks: 463675406
Free inodes: 256097372
First block: 0
Block size: 4096
Fragment size: 4096
Reserved GDT blocks: 779
Blocks per group: 32768
Fragments per group: 32768
Inodes per group: 8192
Inode blocks per group: 512
RAID stride: 128
RAID stripe width: 384
Filesystem created: Mon Sep 21 21:47:18 2009
Last mount time: Mon Jun 22 21:04:50 2015
Last write time: Mon Jun 22 21:04:50 2015
Mount count: 137
Maximum mount count: 200
Last checked: Thu Apr 16 06:08:46 2015
Check interval: 17280000 (6 months, 2 weeks, 6 days)
Next check after: Mon Nov 2 05:08:46 2015
Lifetime writes: 15 TB
Reserved blocks uid: 0 (user root)
Reserved blocks gid: 0 (group root)
First inode: 11
Inode size: 256
Required extra isize: 28
Desired extra isize: 28
Journal inode: 8
Default directory hash: half_md4
Directory Hash Seed: ef0f022c-b41f-4a14-9957-e0f69e74987b
Journal backup: inode blocks
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