배열 재구성이 진행될 때까지 12시간 넘게 기다린 후, 이제 마침내 여러분에게 조언을 구할 수 있는 좋은 시간이 될 것이라고 생각했습니다.
최근에 3개 디스크 RAID5 설정을 RAID6으로 마이그레이션하기 위해 네 번째 WD Red 4TB 드라이브를 구입했습니다. 디스크가 모두 WD Red 4TB라서 여유공간이 8TB나 되네요. 현재 공간 점유율은 50%입니다.
네 번째 디스크를 마운트하고 /dev/md0다음을 사용하여 추가했습니다.
mdadm --manage /dev/md0 --add /dev/sdf1
그런 다음 다음 명령을 사용하여 RAID5에서 RAID6으로 마이그레이션을 시작했습니다.
mdadm --grow /dev/md0 --level=6 --raid-disk=4
성장작업이 시작되었고 초기속도는 인터넷에서 찾아본 것보다 꽤 괜찮았습니다(예), 하지만 12시간 후에는 44k/초를 얻었고 올바른 값은 10k/초입니다. 다음과 같습니다 cat /proc/mdstat.
Personalities : [raid6] [raid5] [raid4]
md0 : active raid6 sdf1[6] sdd1[4] sda1[5] sde1[3]
7813771264 blocks super 1.2 level 6, 512k chunk, algorithm 18 [4/3] [UUU_]
[>....................] reshape = 0.1% (4931044/3906885632) finish=6498319.2min speed=10K/sec
bitmap: 8/30 pages [32KB], 65536KB chunk
unused devices: <none>
4931044이 질문을 작성하는 시점에서 reshape 프로세스는 5~6시간 동안 지속되었습니다.
내가 사용하고 있는 시스템의 디스크 레이아웃은 다음과 같습니다(에서 덤프 lsblk).
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 3.7T 0 disk
└─sda1 8:1 0 3.7T 0 part
└─md0 9:0 0 7.3T 0 raid6
└─vg_data-data 254:0 0 7.3T 0 lvm /data
sdb 8:16 0 55.9G 0 disk
├─sdb1 8:17 0 53.6G 0 part /
├─sdb2 8:18 0 1K 0 part
└─sdb5 8:21 0 2.3G 0 part [SWAP]
sdc 8:32 0 1.8T 0 disk
└─sdc1 8:33 0 1.8T 0 part /mnt/Backup-usb
sdd 8:48 0 3.7T 0 disk
└─sdd1 8:49 0 3.7T 0 part
└─md0 9:0 0 7.3T 0 raid6
└─vg_data-data 254:0 0 7.3T 0 lvm /data
sde 8:64 0 3.7T 0 disk
└─sde1 8:65 0 3.7T 0 part
└─md0 9:0 0 7.3T 0 raid6
└─vg_data-data 254:0 0 7.3T 0 lvm /data
sdf 8:80 0 3.7T 0 disk
└─sdf1 8:81 0 3.7T 0 part
└─md0 9:0 0 7.3T 0 raid6
└─vg_data-data 254:0 0 7.3T 0 lvm /data
마이그레이션 속도를 높이기 위해 reshape 실행 후 다음 매개변수를 조정했습니다 /dev/md0./data
sysctl -w dev.raid.speed_limit_min=100000
sysctl -w dev.raid.speed_limit_max=500000
echo 4096 > /sys/block/md0/md/stripe_cache_size
blockdev --setra 65536 /dev/md0
echo max > /sys/block/md0/md/sync_max또한 속도에 긍정적인 영향을 미치지 않는지 확인하기 위해 두 번 게시했습니다 .
내 문제는 리모델링 과정이 현재 정체된 것 같다는 것이다. 발행된 경우 dmesg | grep md0다음 문제가 보고됩니다.
[58169.337512] md/raid:md0: raid level 6 active with 3 out of 4 devices, algorithm 18
[58169.805197] md: reshape of RAID array md0
[58169.805201] md: minimum _guaranteed_ speed: 1000 KB/sec/disk.
[58169.805203] md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for reshape.
[58169.805208] md: using 128k window, over a total of 3906885632k.
[58359.078753] md/raid:md0: read error corrected (8 sectors at 9990072 on sdd1)
[58359.078758] md/raid:md0: read error corrected (8 sectors at 9990080 on sdd1)
[58359.078761] md/raid:md0: read error corrected (8 sectors at 9990088 on sdd1)
[58359.078763] md/raid:md0: read error corrected (8 sectors at 9990096 on sdd1)
[58359.078773] md/raid:md0: read error corrected (8 sectors at 9990104 on sdd1)
[58359.078774] md/raid:md0: read error corrected (8 sectors at 9990112 on sdd1)
[58359.078775] md/raid:md0: read error corrected (8 sectors at 9990120 on sdd1)
[58359.078780] md/raid:md0: read error corrected (8 sectors at 9990128 on sdd1)
[58359.078781] md/raid:md0: read error corrected (8 sectors at 9990136 on sdd1)
[58359.078791] md/raid:md0: read error corrected (8 sectors at 9990072 on sda1)
[58666.606583] Tainted: G C 3.16.0-4-amd64 #1
[58666.606721] Tainted: G C 3.16.0-4-amd64 #1
[58666.606825] Tainted: G C 3.16.0-4-amd64 #1
[58666.606948] Tainted: G C 3.16.0-4-amd64 #1
[58666.607039] Tainted: G C 3.16.0-4-amd64 #1
[58666.607148] INFO: task md0_reshape:17403 blocked for more than 120 seconds.
[58666.607168] Tainted: G C 3.16.0-4-amd64 #1
[58666.607206] md0_reshape D ffff880216d33748 0 17403 2 0x00000000
[58666.607225] [<ffffffffa0333cf2>] ? is_mddev_idle+0xd2/0x140 [md_mod]
[58666.607229] [<ffffffffa0336df4>] ? md_do_sync+0x944/0xd80 [md_mod]
[58666.607233] [<ffffffffa0333b87>] ? md_thread+0x107/0x120 [md_mod]
[58666.607238] [<ffffffffa0333a80>] ? md_stop+0x40/0x40 [md_mod]
[58786.578974] Tainted: G C 3.16.0-4-amd64 #1
[58786.579191] Tainted: G C 3.16.0-4-amd64 #1
[58786.579342] Tainted: G C 3.16.0-4-amd64 #1
[58786.579508] INFO: task md0_reshape:17403 blocked for more than 120 seconds.
[58786.579545] Tainted: G C 3.16.0-4-amd64 #1
[58786.579612] md0_reshape D ffff880216d33748 0 17403 2 0x00000000
[58786.579639] [<ffffffffa0333cf2>] ? is_mddev_idle+0xd2/0x140 [md_mod]
[58786.579644] [<ffffffffa0336df4>] ? md_do_sync+0x944/0xd80 [md_mod]
[58786.579651] [<ffffffffa0333b87>] ? md_thread+0x107/0x120 [md_mod]
[58786.579658] [<ffffffffa0333a80>] ? md_stop+0x40/0x40 [md_mod]
또한 /data콘텐츠에 액세스할 수 없습니다. 실행하면 cd /data모든 것이 괜찮아 보이지만 콘텐츠를 나열하면 명령이 ls실제로 중단되고 결과가 반환되지 않으며 강제로 서버와의 SSH 세션을 종료하게 됩니다.
저는 mdadm - v3.3.2 - 21st August 2014데비안을 사용하고 있습니다 Linux debnas 3.16.0-4-amd64 #1 SMP Debian 3.16.39-1 (2016-12-30) x86_64 GNU/Linux.
출력은 iostat -k 1 2다음과 같습니다.
Linux 3.16.0-4-amd64 (debnas) 09/02/2019 _x86_64_ (4 CPU)
avg-cpu: %user %nice %system %iowait %steal %idle
1.25 0.00 15.25 36.91 0.00 46.59
Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn
sdb 4.42 16.33 37.55 2191851 5038772
sda 60.00 29162.00 78.31 3913364324 10508977
sdc 0.11 0.15 0.00 19751 40
sdd 59.64 40.30 29191.39 5408213 3917308368
sde 59.97 29162.68 77.94 3913455394 10459365
sdf 0.12 0.03 36.79 4157 4936637
md0 1.79 7.45 75.01 999197 10066300
dm-0 1.71 7.44 75.01 998645 10066300
avg-cpu: %user %nice %system %iowait %steal %idle
0.50 0.00 25.00 74.50 0.00 0.00
Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn
sdb 0.00 0.00 0.00 0 0
sda 0.00 0.00 0.00 0 0
sdc 0.00 0.00 0.00 0 0
sdd 0.00 0.00 0.00 0 0
sde 0.00 0.00 0.00 0 0
sdf 0.00 0.00 0.00 0 0
md0 0.00 0.00 0.00 0 0
dm-0 0.00 0.00 0.00 0 0
201909021128 업데이트: dmesg가 읽기 오류를 보고하면 sda두 드라이브의 전체 출력을 게시합니다 sdd.smartctl -a
user@debnas:/home/user# smartctl -a /dev/sda
smartctl 6.4 2014-10-07 r4002 [x86_64-linux-3.16.0-4-amd64] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Western Digital Red (AF)
Device Model: WDC WD40EFRX-68N32N0
Serial Number: WD-WCC7K0YEYNV9
LU WWN Device Id: 5 0014ee 2663bb359
Firmware Version: 82.00A82
User Capacity: 4,000,787,030,016 bytes [4.00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 5400 rpm
Form Factor: 3.5 inches
Device is: In smartctl database [for details use: -P show]
ATA Version is: ACS-3 T13/2161-D revision 5
SATA Version is: SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Mon Sep 2 11:27:38 2019 CEST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
General SMART Values:
Offline data collection status: (0x00) Offline data collection activity
was never started.
Auto Offline Data Collection: Disabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: (45360) seconds.
Offline data collection
capabilities: (0x7b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 482) minutes.
Conveyance self-test routine
recommended polling time: ( 5) minutes.
SCT capabilities: (0x303d) SCT Status supported.
SCT Error Recovery Control supported.
SCT Feature Control supported.
SCT Data Table supported.
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 0
3 Spin_Up_Time 0x0027 225 163 021 Pre-fail Always - 3741
4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 66
5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0
7 Seek_Error_Rate 0x002e 100 253 000 Old_age Always - 0
9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 183
10 Spin_Retry_Count 0x0032 100 253 000 Old_age Always - 0
11 Calibration_Retry_Count 0x0032 100 253 000 Old_age Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 66
192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 20
193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 52
194 Temperature_Celsius 0x0022 113 105 000 Old_age Always - 37
196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0
197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0030 100 253 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0
200 Multi_Zone_Error_Rate 0x0008 100 253 000 Old_age Offline - 0
SMART Error Log Version: 1
No Errors Logged
SMART Self-test log structure revision number 1
No self-tests have been logged. [To run self-tests, use: smartctl -t]
SMART Selective self-test log data structure revision number 1
SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
1 0 0 Not_testing
2 0 0 Not_testing
3 0 0 Not_testing
4 0 0 Not_testing
5 0 0 Not_testing
Selective self-test flags (0x0):
After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.
user@debnas:/home/user# smartctl -a /dev/sdd
smartctl 6.4 2014-10-07 r4002 [x86_64-linux-3.16.0-4-amd64] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Western Digital Red (AF)
Device Model: WDC WD40EFRX-68N32N0
Serial Number: WD-WCC7K2HNS0C0
LU WWN Device Id: 5 0014ee 211682e4b
Firmware Version: 82.00A82
User Capacity: 4,000,787,030,016 bytes [4.00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 5400 rpm
Form Factor: 3.5 inches
Device is: In smartctl database [for details use: -P show]
ATA Version is: ACS-3 T13/2161-D revision 5
SATA Version is: SATA 3.1, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is: Mon Sep 2 11:30:55 2019 CEST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
General SMART Values:
Offline data collection status: (0x00) Offline data collection activity
was never started.
Auto Offline Data Collection: Disabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: (43920) seconds.
Offline data collection
capabilities: (0x7b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 466) minutes.
Conveyance self-test routine
recommended polling time: ( 5) minutes.
SCT capabilities: (0x303d) SCT Status supported.
SCT Error Recovery Control supported.
SCT Feature Control supported.
SCT Data Table supported.
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x002f 100 253 051 Pre-fail Always - 0
3 Spin_Up_Time 0x0027 228 200 021 Pre-fail Always - 3583
4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 8
5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0
7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0
9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 38
10 Spin_Retry_Count 0x0032 100 253 000 Old_age Always - 0
11 Calibration_Retry_Count 0x0032 100 253 000 Old_age Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 8
192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 6
193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 6
194 Temperature_Celsius 0x0022 113 104 000 Old_age Always - 37
196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0
197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0030 100 253 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0
200 Multi_Zone_Error_Rate 0x0008 100 253 000 Old_age Offline - 0
SMART Error Log Version: 1
No Errors Logged
SMART Self-test log structure revision number 1
No self-tests have been logged. [To run self-tests, use: smartctl -t]
SMART Selective self-test log data structure revision number 1
SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
1 0 0 Not_testing
2 0 0 Not_testing
3 0 0 Not_testing
4 0 0 Not_testing
5 0 0 Not_testing
Selective self-test flags (0x0):
After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.
md0_raid업데이트 201909021143: 프로세스가 모든 CPU 리소스를 소비하고 있는 것으로 보입니다 . 게시 후 ps aux | grep md0CPU 사용률이 99.7%이고 재구성이 CPU를 전혀 사용하지 않는 것을 확인할 수 있습니다.
root 17401 99.7 0.0 0 0 ? R Sep01 1348:35 [md0_raid6]
root 17403 0.0 0.0 0 0 ? D Sep01 0:04 [md0_reshape]
다음은 마지막 몇 줄입니다 dmesg.
[58786.579309] INFO: task postgres:5070 blocked for more than 120 seconds.
[58786.579342] Tainted: G C 3.16.0-4-amd64 #1
[58786.579371] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[58786.579409] postgres D ffff8801e2860ff8 0 5070 3818 0x00000000
[58786.579412] ffff8801e2860ba0 0000000000000082 0000000000012f40 ffff8801b4767fd8
[58786.579414] 0000000000012f40 ffff8801e2860ba0 ffff88021fa137f0 ffff88021fdbf578
[58786.579416] 0000000000000002 ffffffff8113eb70 ffff8801b4767ba0 0000000000000000
[58786.579419] Call Trace:
[58786.579421] [<ffffffff8113eb70>] ? wait_on_page_read+0x60/0x60
[58786.579424] [<ffffffff815178e9>] ? io_schedule+0x99/0x120
[58786.579426] [<ffffffff8113eb7a>] ? sleep_on_page+0xa/0x10
[58786.579429] [<ffffffff81517c6c>] ? __wait_on_bit+0x5c/0x90
[58786.579432] [<ffffffff8113e976>] ? wait_on_page_bit+0xc6/0xd0
[58786.579434] [<ffffffff810a95f0>] ? autoremove_wake_function+0x30/0x30
[58786.579437] [<ffffffff8114dc7a>] ? pagevec_lookup_entries+0x1a/0x30
[58786.579440] [<ffffffff8114e662>] ? truncate_inode_pages_range+0x302/0x5a0
[58786.579449] [<ffffffffa02efb67>] ? __ext4_journal_stop+0x37/0xa0 [ext4]
[58786.579457] [<ffffffffa02d075b>] ? ext4_rename+0x11b/0x660 [ext4]
[58786.579461] [<ffffffff811d1212>] ? __inode_wait_for_writeback+0x72/0xc0
[58786.579464] [<ffffffff812037f8>] ? __dquot_initialize+0x28/0x1c0
[58786.579467] [<ffffffff810a95f0>] ? autoremove_wake_function+0x30/0x30
[58786.579475] [<ffffffffa02c79f7>] ? ext4_evict_inode+0x127/0x4e0 [ext4]
[58786.579478] [<ffffffff811c475c>] ? evict+0xac/0x170
[58786.579481] [<ffffffff811c0548>] ? __dentry_kill+0x168/0x1d0
[58786.579484] [<ffffffff811c064e>] ? dput+0x9e/0x170
[58786.579486] [<ffffffff811b8588>] ? SYSC_renameat2+0x498/0x530
[58786.579491] [<ffffffff811719a5>] ? vm_munmap+0x45/0x50
[58786.579494] [<ffffffff8151adcd>] ? system_call_fast_compare_end+0x10/0x15
내 질문은 다음과 같습니다.
재발명 프로세스를 추진하기 위해 무엇을 할 수 있습니까?
귀하의 데이터가 온라인에서 안전하다고 생각하십니까
md0?md0데이터에 접근할 수 없다면 어떻게 접근할 수 있나요cd?출력의 스택 추적은 무엇입니까
dmesg?
도움을 주셔서 감사합니다.