我丢失了一个驱动器，所以我停止了阵列，更换了驱动器，重新组装了阵列。
到目前为止一切都很好，除了当我尝试安装阵列时，我遇到了有关 md0 文件系统的错误（抱歉，我重新启动了，所以无法从 dmesg 粘贴它，像 ioctl 这样的操作失败了..）
所以我做了sudo fsck -f -y /dev/md0现在回想起来我认为这是一个错误，但是现在已经发生了......
现在我可以使用毫无问题地挂载我的阵列sudo mount /dev/md0 /media/raid5
问题是，当我发出ls -la /media/raid5除了失物招领处的一堆东西外……
我粘贴了以下一些可能有帮助的内容；我丢失了数据还是可以恢复？
我发现“奇怪”的事情是细节中数组的大小，不知道它是否相关，但数组大小：7813527552 似乎正确，而使用的开发大小：1953381888 似乎太低了，事实上我缺少的数据的大小正是差异，5To ..
df - h告诉我我有效地使用了那些 5To，好像它们“隐藏”在 lost+found 中，不是吗？如果是这样，有什么方法可以找回它，哪怕是部分找回？
➜ ~ sudo mdadm --detail /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Tue Nov 6 15:41:25 2012
Raid Level : raid5
Array Size : 7813527552 (7451.56 GiB 8001.05 GB)
Used Dev Size : 1953381888 (1862.89 GiB 2000.26 GB)
Raid Devices : 5
Total Devices : 5
Persistence : Superblock is persistent
Update Time : Mon Dec 15 14:27:06 2014
State : clean
Active Devices : 5
Working Devices : 5
Failed Devices : 0
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 512K
Name : bigbenn:0 (local to host bigbenn)
UUID : e7c87d29:37d0d6b4:9a336d4f:0e239a13
Events : 188191
Number Major Minor RaidDevice State
6 8 33 0 active sync /dev/sdc1
7 8 81 1 active sync /dev/sdf1
5 8 97 2 active sync /dev/sdg1
4 8 1 3 active sync /dev/sda1
8 8 49 4 active sync /dev/sdd1
➜ ~ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sdb1 37G 3.2G 32G 10% /
udev 10M 0 10M 0% /dev
tmpfs 2.4G 9.4M 2.4G 1% /run
tmpfs 5.9G 0 5.9G 0% /dev/shm
tmpfs 5.0M 4.0K 5.0M 1% /run/lock
tmpfs 5.9G 0 5.9G 0% /sys/fs/cgroup
/dev/sdb6 189G 1.3G 178G 1% /home
/dev/sde1 917G 743G 128G 86% /media/backup
/dev/md0 7.2T 5.0T 1.9T 73% /media/raid5
tmpfs 1.2G 4.0K 1.2G 1% /run/user/117
tmpfs 1.2G 4.0K 1.2G 1% /run/user/1000
➜ ~ ls -la /media/raid5
total 12
drwxr-xr-x 3 root root 4096 Dec 15 00:39 .
drwxr-xr-x 7 root root 4096 Dec 14 21:49 ..
drwx------ 6 root root 4096 Dec 15 00:39 lost+found
➜ ~ ls -la /media/raid5/lost+found
ls: cannot open directory /media/raid5/lost+found: Permission denied
➜ ~ sudo !!
➜ ~ sudo ls -la /media/raid5/lost+found
total 475124
drwx------ 6 root root 4096 Dec 15 00:39 .
drwxr-xr-x 3 root root 4096 Dec 15 00:39 ..
p-------w- 1 489050452 252528908 0 Jun 27 1977 #261633
cr-x---rwx 1 1143560789 640026744 23, 112 Jan 12 1977 #261639
cr-s--x-w- 1 559564848 139876864 4, 26 Jan 20 1977 #261640
b------r-t 1 1853311824 1869352991 109, 10 Sep 28 1998 #261654
c--Sr-Srwt 1 541667594 825704759 68, 52 Oct 16 2006 #261659
p--s-w--wt 1 542639642 1412387656 0 Feb 25 2020 #261667
pr---w-r-x 1 268895754 203120431 0 Nov 16 2025 #261674
pr-srw--wT 1 1814436894 1412593526 0 Nov 9 1975 #261706
pr---wxr-T 1 22284047 236801860 0 Jun 8 2016 #261721
cr-x-w-r-- 1 492048252 1951075159 83, 94 Oct 25 2015 #261733
pr-s-w--wt 1 1128532501 1097551966 0 Feb 1 2019 #261741
pr-------- 1 1547961346 442260057 0 Jun 30 2003 #261781
pr-srwS-wT 1 1079076920 7603464 0 Dec 22 1977 #261782
c--Srw---T 1 572405313 1160339301 68, 10 Apr 8 1974 #261784
p--srwxrwx 1 858325523 1563754496 0 Jul 19 1984 #261813
pr----Srwx 1 1448935536 558899787 0 Apr 8 2014 #261823
cr-x-w-r-- 1 1599754272 626415711 2, 3 Jul 21 2018 #261832
pr-S--s-wx 1 38601258 1645485660 0 Sep 2 1978 #261835
cr-x--S-wt 1 1294991628 1176834053 80, 93 Apr 7 2014 #261844
p--Sr-sr-t 1 33620230 352323141 0 Sep 13 1972 #261846
pr-s--x-wt 1 1113021275 857099109 0 Mar 13 2006 #261868
c---r-x--- 1 443308357 421205766 90, 80 Oct 16 2015 #261870
pr---wsr-- 1 1966300955 24269653 0 Mar 13 1979 #261883
cr-SrwSrw- 1 1532772663 994263811 81, 94 Apr 16 1974 #261893
pr-S--S--x 1 1448562180 558961927 0 Nov 5 1974 #261895
c--S-w-rwt 1 1446058509 575937801 86, 7 Aug 17 1979 #261900
cr-x-wxr-t 1 441538073 1095238738 73, 23 May 22 2007 #261936
cr-x--s--t 1 1461457223 287135574 3, 59 Mar 3 2005 #261938
c--x--Sr-T 1 1092879959 2065648452 28, 68 Apr 2 1982 #261954
p--S--SrwT 1 207227675 1499218280 0 May 19 1976 #261955
p-----x-wx 1 118380373 1912872706 0 Sep 4 1995 #261957
pr-x-wsrw- 1 626543116 1431831044 0 Oct 15 2013 #261959
pr-S--S--T 1 1363739136 944773205 0 Oct 16 2005 #261966
pr-------T 1 1912867116 118571589 0 Jan 29 1985 #261996
b--s--S-wx 1 1918324566 34037084 23, 6 Sep 6 1972 #261998
pr-S--xr-T 1 1251093 508183892 0 Feb 7 1987 #262003
pr------wx 1 1260539999 1348032039 0 Sep 18 1988 #262007
p----w---T 1 4265242 1498378579 0 Oct 5 2005 #262040
pr-s--S-wt 1 219960592 168580888 0 Nov 25 1991 #262048
p--s-w--wt 1 1398086148 1074290245 0 Jul 4 2009 #262062
cr--r-srwt 1 639778115 1980330242 77, 73 Aug 15 2019 #262065
br-s--S-wt 1 1226462797 101450497 2, 28 Nov 28 2110 #262068
pr-S--s--- 1 353574159 453641563 0 Sep 5 1987 #262070
p----ws-wx 1 1577064198 189334030 0 Jul 25 2018 #262087
p--s--s--T 1 558370393 1685343820 0 Apr 19 1983 #262096
p--s--Srw- 1 17201021 385880331 0 Jun 9 1985 #262101
p--x--Srwx 1 41312810 101461250 0 Aug 22 2005 #262119
br-s--sr-- 1 1129711117 1112808966 23, 22 Dec 15 2008 #262125
pr----Sr-- 1 420895034 236208449 0 Sep 3 2020 #262128
s---rwxr-- 1 1688325333 1881631676 0 Sep 2 1941 #3876
s--s-wsr-t 1 332108683 934059802 0 Jul 1 1995 #3916
-rw-r---wt 1 1460211467 2815708698 36864 Mar 2 1929 #3917
b-w-r-S--- 1 865474894 47585693 62, 39 May 14 1990 #3919
-r-S-wsrw- 1 3778435245 3291066133 49152 Jul 4 1977 #3956
d--xr-x--t 2 669314516 2513519167 4096 Nov 20 1969 #3966
d--s--xr-T 2 954465812 2472467194 4096 Oct 14 1916 #3983
sr-S---rwT 1 938580216 2490859683 0 Apr 27 1942 #4003
--w-r-Srwt 1 337826943 1400506028 32768 Feb 21 1980 #4025
srwS-w--wx 1 3429655040 1853513202 0 Aug 30 2022 #4040
s-wS--s--x 1 3122972322 3846267154 0 Aug 18 1918 #4066
br-Sr-s--x 1 195341673 1718203134 145, 246 Apr 29 1929 #4076
cr-x--xr-T 1 3365232875 3635400453 88, 231 Oct 10 1957 #4085
srw---Sr-T 1 3121937149 3368475388 0 Jul 20 1920 #4091
s-ws--Srwt 1 2681996022 3739450654 0 Mar 22 1961 #4092
drwxr-xr-x 27 lotso lotso 4096 Dec 7 08:38 #4098
-rw------- 1 root root 4299210752 May 16 2014 #4103
-rw------- 1 root root 134217728 Nov 6 2012 #4104
-rw-r--r-- 1 lotso lotso 4072611 Sep 21 2013 #4116
-rw-r--r-- 1 lotso lotso 11033891 Nov 19 2013 #4127
-rwxr-xr-x 1 lotso lotso 6679717 Dec 26 2012 #4128
drwx------ 2 root root 4096 May 21 2013 #4130
-rwxr-xr-x 1 lotso lotso 4373740 Mar 22 2013 #4131
-rw-r--r-- 1 lotso lotso 16269232 Jul 29 2013 #4132
-rw-r--r-- 1 lotso lotso 14832814 Jul 29 2013 #4133
-rw-r--r-- 1 lotso lotso 4979773 Jul 29 2013 #4134
-rw-r--r-- 1 lotso lotso 16523930 Jul 29 2013 #4135
-rw-r--r-- 1 lotso lotso 10224111 Jul 29 2013 #4136
-rw-r--r-- 1 lotso lotso 29414204 Jul 29 2013 #4137
-rw-r--r-- 1 lotso lotso 9604110 Jul 29 2013 #4138
-rw-r--r-- 1 lotso lotso 5406142 Jul 29 2013 #4139
-rw-r--r-- 1 lotso lotso 1325863 Jul 29 2013 #4140
-rw-r--r-- 1 lotso lotso 3037985 Jul 29 2013 #4141
-rw-r--r-- 1 lotso lotso 7495354 Jul 29 2013 #4142
-rw-r--r-- 1 lotso lotso 847820 Jul 29 2013 #4143
-rw-r--r-- 1 lotso lotso 3754492 Jul 29 2013 #4144
-rw-r--r-- 1 lotso lotso 41141215 Sep 21 2013 #4145
-rw-r--r-- 1 lotso lotso 613446 Sep 21 2013 #4146
-rw-r--r-- 1 lotso lotso 47836769 Sep 21 2013 #4147
-rw-r--r-- 1 lotso lotso 18449218 Sep 21 2013 #4148
-rw-r--r-- 1 lotso lotso 5419992 Sep 21 2013 #4149
-rw-r--r-- 1 lotso lotso 2584180 Sep 21 2013 #4150
-rw-r--r-- 1 lotso lotso 156546 Sep 21 2013 #4151
-rw-r--r-- 1 lotso lotso 20297183 Sep 21 2013 #4152
-rw-r--r-- 1 lotso lotso 4207536 Sep 21 2013 #4153
-rw-r--r-- 1 lotso lotso 1008568 Nov 8 2013 #4154
-rw-r--r-- 1 lotso lotso 1112122 Nov 8 2013 #4155
-rw-r--r-- 1 lotso lotso 4187507 Nov 19 2013 #4157
-rw-r--r-- 1 lotso lotso 1900671 Nov 19 2013 #4158
-rw-r--r-- 1 lotso lotso 792373 Nov 19 2013 #4159