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Re: [Linux-cluster] How to re-store my lost data



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 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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