[Linux-cluster] How to re-store my lost data
Luis Cebamanos
luiceur at gmail.com
Thu Jan 6 19:36:16 UTC 2011
Is a cluster with 16 nodes and I suspect the problem is in the head node:
$cat /proc/version
Linux version 2.6.11.4-21.11-smp (geeko at buildhost) (gcc version 3.3.5
20050117 (prerelease) (SUSE Linux)) #1 SMP Thu Feb 2 20:54:26 GMT 2006
$cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 37
model name : AMD Opteron(tm) Processor 246
stepping : 1
cpu MHz : 1994.349
cache size : 1024 KB
physical id : 255
siblings : 1
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat pse36 clflush mmx fxsr sse sse2 pni syscall nx mmxext fxsr_opt
lm 3dnowext 3dnow pni lahf_lm
bogomips : 3923.96
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp
processor : 1
vendor_id : AuthenticAMD
cpu family : 15
model : 37
model name : AMD Opteron(tm) Processor 246
stepping : 1
cpu MHz : 1994.349
cache size : 1024 KB
physical id : 255
siblings : 1
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat pse36 clflush mmx fxsr sse sse2 pni syscall nx mmxext fxsr_opt
lm 3dnowext 3dnow pni lahf_lm
bogomips : 3981.31
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp
cat /proc/meminfo #
MemTotal: 2055264 kB
MemFree: 1781708 kB
Buffers: 96696 kB
Cached: 99892 kB
SwapCached: 0 kB
Active: 114836 kB
Inactive: 98388 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 2055264 kB
LowFree: 1781708 kB
SwapTotal: 4192924 kB
SwapFree: 4192924 kB
Dirty: 52 kB
Writeback: 0 kB
Mapped: 28104 kB
Slab: 43688 kB
CommitLimit: 5220556 kB
Committed_AS: 232052 kB
PageTables: 1512 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 2412 kB
VmallocChunk: 34359735867 kB
HugePages_Total: 0
HugePages_Free: 0
Hugepagesize: 2048 kB
df -T
Filesystem Type 1K-blocks Used Available Use% Mounted on
/dev/sda2 ext3 33032228 19971720 11382520 64% /
tmpfs tmpfs 1027632 0 1027632 0% /dev/shm
/dev/sda1 ext3 124427 9412 108591 8% /boot
/dev/sda6 ext3 2063504 33820 1924864 2% /tmp
/dev/sda9 ext3 166698068 119970708 38259504 76% /users
/dev/sda8 ext3 32250392 966320 29645848 4% /usr/local
/dev/sda7 ext3 2063504 901804 1056880 47% /var
We were trying to install new hard drives to the system but something
that we don't know went wrong and it ended up in almost 4 years of work
lost!!!
Please, let me know what else can I do to be able to get the data back!
Best
On 01/05/2011 04:28 PM, Digimer wrote:
> On 01/05/2011 11:08 AM, Luis Cebamanos wrote:
>> Dear everyone!
>>
>> we have recently had an unknown problem with our cluster and we have
>> lost some data, including the latest user accounts created.
>> Does anyone have any idea of how to recover those user accounts and data?
>> The data haven't been deleted so it should be in somewhere in the disk!!!
>>
>> Please, any help would be much more appreciated.
>>
>>
>> Best,
>>
>> Luis
> Please provide more details. Specifically, what file system? How did the
> data loss occur (as best as you know)? What versions of what cluster
> applications? What has been done since then? Where and how was the data
> stored? etc.
>
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