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Unable to access Server manager during restore from workstation.

Searched forum but have not found exactly this issue.

First I tried to upgrade my server from v8.1 to V9.0 and for some reason I couldn't make this work.  So I did a fresh install of v8.0 and did all the updates to get v8.1.

Then I started a restore from workstation (which is taking an inordinately long time incidentally) and found that I could no longer access server manager from my browser.  I am able to log into root via a terminal session using PuTTY.

I am not very familiar with Linux and I am trying to tell if the restore is finished by using Wireshark and monitoring the traffic between the server and the workstation (running it on the workstation).

Can I tell if the restore is finished in a better way?  Is there something I can look at via my tty session?

Also any ideas why I can't access server manager.

Thanks in advance for any help.
« Last Edit: April 30, 2015, 02:14:44 AM by abarron »

Offline janet

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Re: Unable to access Server manager during restore from workstation.
« Reply #1 on: April 30, 2015, 05:13:10 AM »
abarron

Try accessing server manager directly at the server console.
Log in as admin (at the command prompt) & from the menu select server manager.
It will open a text based server manager view

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Re: Unable to access Server manager during restore from workstation.
« Reply #2 on: April 30, 2015, 04:45:29 PM »
Thank you Janet.  Yes I can access server manager from the console via my terminal connection.

That is I can access the login dialogue and when I supply the appropriate credentials it brings up a new URL and then eventually cycles back to the login dialogue after a few seconds.

This is essentially the same behaviour I am getting from the web interface.

Any more ideas gratefully received.

Offline Stefano

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Re: Unable to access Server manager during restore from workstation.
« Reply #3 on: April 30, 2015, 04:54:13 PM »
are you still waiting for the data restore?
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Re: Unable to access Server manager during restore from workstation.
« Reply #4 on: April 30, 2015, 07:43:14 PM »
Yes Stefano I am,  lot of data.

Offline janet

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Re: Unable to access Server manager during restore from workstation.
« Reply #5 on: April 30, 2015, 08:12:00 PM »
abarron

Quote
  Yes I can access server manager from the console via my terminal connection.
That is I can access the login dialogue and when I supply the appropriate credentials it brings up a new URL and then eventually cycles back to the login dialogue after a few seconds.
This is essentially the same behaviour I am getting from the web interface.

I do not call that being able to access server manager. I call that NOT being able to access server manager.

Did you configure the identical backup job in server manager, so it can find your backup to do the restore from ?

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Offline Stefano

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Re: Unable to access Server manager during restore from workstation.
« Reply #6 on: April 30, 2015, 08:12:57 PM »
how much data?
is your raid rebuilding? raid1? raid5?
how is connected the remote machine? 100 MBit? 1Gbit?

you don't need server-manager to monitor restoring..
just login as root and use top, iptraf, df (open at least 3 different sessions)

you'll see what's running (dar), network traffic speed (iptraf), disk space occupation (df)

in the meanwhile, I suggest you to smoke a lot of cigarettes and drink coffee :-)
if you are not a smoker, just start ;-)

Consulente di Smeserver.it -  Soluzioni e supporto su Sme server in Italia

Re: Unable to access Server manager during restore from workstation.
« Reply #7 on: April 30, 2015, 08:17:55 PM »
abarron

I do not call that being able to access server manager. I call that NOT being able to access server manager.

Did you configure the identical backup job in server manager, so it can find your backup to do the restore from ?

Yes you are right, sorry.

Yes I had configured the backup the same way, it offered me a selection of backups to restore starting with the last full
backup which is what is currently restoring.

Thank you for your help
« Last Edit: April 30, 2015, 08:40:13 PM by abarron »

Re: Unable to access Server manager during restore from workstation.
« Reply #8 on: April 30, 2015, 08:37:24 PM »
how much data?
is your raid rebuilding? raid1? raid5?
how is connected the remote machine? 100 MBit? 1Gbit?

you don't need server-manager to monitor restoring..
just login as root and use top, iptraf, df (open at least 3 different sessions)

you'll see what's running (dar), network traffic speed (iptraf), disk space occupation (df)

in the meanwhile, I suggest you to smoke a lot of cigarettes and drink coffee :-)
if you are not a smoker, just start ;-)


About 750 GB of data
Top shows Dar is running and also MD2_Raid5  is that a raid rebuild?
100Mb network
IPTraf shows traffic that pretty much agrees with traffic from workstation shown by Wireshark.

Guess I have to take up smoking and wait   :shock:

Thank you for your help.

Offline Stefano

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Re: Unable to access Server manager during restore from workstation.
« Reply #9 on: April 30, 2015, 08:53:29 PM »
well

750 Gb -> about 75000 MB
100Mb -> about 10 MB/s

then you need at least 75000/10 s -> 22 hours

don't hold your breath ;-)
Consulente di Smeserver.it -  Soluzioni e supporto su Sme server in Italia

Re: Unable to access Server manager during restore from workstation.
« Reply #10 on: April 30, 2015, 09:04:19 PM »
Ah!  Currently it has been running for about 70 hours.

Offline Stefano

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Re: Unable to access Server manager during restore from workstation.
« Reply #11 on: April 30, 2015, 09:08:39 PM »
well, I forgot to say that reid5 rebuilding is a big stress..
please, post the output of
Code: [Select]
df -h

and the first 5 rows of
Code: [Select]
top
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Offline janet

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Re: Unable to access Server manager during restore from workstation.
« Reply #12 on: April 30, 2015, 09:17:11 PM »
abarron

Yes that's a lot of data to restore over a 100Mb network & not really practical to do so.

Quote
Currently it has been running for about 70 hours.

It may have hung & you are waiting for nothing. Use the tools Stefano advised to check what is happeneing.

You would be far better off (IMHO) to copy your backup off the workstation to a USB drive (locally connected on sme server formatted as ext3/4) to a correct folder location to suit the backup "layout", & then use that USB drive to restore from on the sme server.
That amount of data might typically take 8 - 10 hours to restore depending on various factors (USB speed, data type etc).
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Offline janet

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Re: Unable to access Server manager during restore from workstation.
« Reply #13 on: April 30, 2015, 09:22:09 PM »
abarron

Quote
...I tried to upgrade my server from v8.1 to V9.0 and for some reason I couldn't make this work

sme 9 (CentOS 6.5) does not support direct upgrades from prior versions, so the only path to update an older version of sme server, is via backup & restore.

Quote
Can I tell if the restore is finished in a better way?

Server manager restore panel should display the prgress of the restore & tell you when it is complete, I assume you instigated the restore via server manager & then server manager disconnected or you closed it (???).
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Offline janet

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Re: Unable to access Server manager during restore from workstation.
« Reply #14 on: April 30, 2015, 09:25:26 PM »
abarron

Quote
top shows .... MD2_Raid5  is that a raid rebuild?

Also show output of
cat /proc/mdstat

If your restore is nearing completion, then you may be best to just wait, assuming it is still running.
Please search before asking, an answer may already exist.
The Search & other links to useful information are at top of Forum.

Re: Unable to access Server manager during restore from workstation.
« Reply #15 on: April 30, 2015, 09:28:30 PM »
Stefano,

Top output.

 PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
19383 root      15   0  4864  720  488 S 24.7  0.1   5:00.38 iptraf
 3181 root      18   0  734m 354m  832 R  6.5 70.6   1332:27 dar
  321 root      10  -5     0    0    0 S  2.6  0.0 139:42.24 md2_raid5
 3145 root      10  -5     0    0    0 S  2.0  0.0  35:14.62 cifsd
19437 root      15   0  2440 1064  800 R  2.0  0.2   0:00.26 top


Output from DF -h

Filesystem                          Size  Used Avail Use% Mounted on
/dev/mapper/main-root
                                        451G  127G  301G  30% /
/dev/md1                             99M   19M   76M  20% /boot
tmpfs                                  252M     0  252M   0% /dev/shm
192.168.7.4:smebackup
                                       932G  196G  737G  21% /mnt/smb


Cheers.

Offline Stefano

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Re: Unable to access Server manager during restore from workstation.
« Reply #16 on: April 30, 2015, 09:30:38 PM »
post also the top headers values (load etc)

I that you've copied only 126 GB of data...

take a look at /var/log/messages too
Consulente di Smeserver.it -  Soluzioni e supporto su Sme server in Italia

Re: Unable to access Server manager during restore from workstation.
« Reply #17 on: April 30, 2015, 09:32:43 PM »
abarron

sme 9 (CentOS 6.5) does not support direct upgrades from prior versions, so the only path to update an older version of sme server, is via backup & restore.

That is how I was going to try and do it, I had read that I had to do a fresh install.

Server manager restore panel should display the prgress of the restore & tell you when it is complete, I assume you instigated the restore via server manager & then server manager disconnected or you closed it (???).

Yes that is how I started it.  That is also why I am at a loss as to know when the restore has finished as I am unable to access server manager

Re: Unable to access Server manager during restore from workstation.
« Reply #18 on: April 30, 2015, 09:37:57 PM »
post also the top headers values (load etc)

I that you've copied only 126 GB of data...

take a look at /var/log/messages too

top - 20:34:31 up 2 days, 20:33,  3 users,  load average: 1.75, 1.92, 1.91
Tasks: 174 total,   3 running, 171 sleeping,   0 stopped,   0 zombie
Cpu(s): 11.1%us, 18.6%sy,  0.0%ni,  3.3%id, 65.1%wa,  1.6%hi,  0.3%si,  0.0%st
Mem:    514860k total,   503276k used,    11584k free,      236k buffers
Swap:  1048568k total,   735404k used,   313164k free,    12512k cached

 PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 3181 root      18   0  734m 422m 1116 R 15.8 84.1   1334:41 dar
  321 root      10  -5     0    0    0 S  4.8  0.0 140:26.83 md2_raid5
19383 root      15   0  4864  720  488 S  2.3  0.1   5:31.44 iptraf
19355 root      15   0 10180  624  512 S  1.9  0.1   1:10.56 sshd
19445 root      16   0  2440  696  456 R  1.9  0.1   0:02.73 top


I also notice that the headers seem to say that system has been up for only two days.  I started the restore on 27th.  Or does it say 2 days and 20:33 hours?
« Last Edit: April 30, 2015, 09:42:26 PM by abarron »

Offline Stefano

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Re: Unable to access Server manager during restore from workstation.
« Reply #19 on: April 30, 2015, 09:39:54 PM »
ok.. let top run and take a look at wa (waiting) value..
I see it's 65%

that value should be as low as possibile..
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Re: Unable to access Server manager during restore from workstation.
« Reply #20 on: April 30, 2015, 10:06:37 PM »
abarron

Also show output of
cat /proc/mdstat

If your restore is nearing completion, then you may be best to just wait, assuming it is still running.

Sorry Janet I missed this request,  here it is.

 cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4] [raid1]
md1 : active raid1 hda1[0] hdb1[1] hde1[2] hdf1[3]
      104320 blocks [4/4] [UUUU]

md2 : active raid5 hdf2[2] hde2[3](S) hdb2[1] hda2[0]
      488182784 blocks level 5, 256k chunk, algorithm 2 [3/3] [UUU]

unused devices: <none>

Thank you for your help it is much appreciated.

Re: Unable to access Server manager during restore from workstation.
« Reply #21 on: April 30, 2015, 10:11:20 PM »
abarron

Yes that's a lot of data to restore over a 100Mb network & not really practical to do so.

It may have hung & you are waiting for nothing. Use the tools Stefano advised to check what is happeneing.

You would be far better off (IMHO) to copy your backup off the workstation to a USB drive (locally connected on sme server formatted as ext3/4) to a correct folder location to suit the backup "layout", & then use that USB drive to restore from on the sme server.
That amount of data might typically take 8 - 10 hours to restore depending on various factors (USB speed, data type etc).

If I can find out that the restore has stopped I will do just that.  I do remember trying to attach a USB drive to the server before and not being able to get it to work, but I will try again.

What do you mean by: to a correct folder location to suit the backup "layout"

Thanks.

Offline janet

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Re: Unable to access Server manager during restore from workstation.
« Reply #22 on: April 30, 2015, 10:19:48 PM »
abarron

Quote
What do you mean by: to a correct folder location to suit the backup "layout"

When a backup is run say to a local USB drive (or workstation) it creates a certain folder structure, something like the server domain name, so if you manually move the backup file (only), then you need to create the same folder structure on the USB drive, so that the backup/restore function will correctly find the backup file.
The folder structure should be the samne as shown on your wporkstation backup share.

USB drives need to be formatted to ext3 or ext4, refer the Howto section of this site for details.


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Re: Unable to access Server manager during restore from workstation.
« Reply #23 on: April 30, 2015, 10:31:47 PM »
abarron

When a backup is run say to a local USB drive (or workstation) it creates a certain folder structure,
<snip>

USB drives need to be formatted to ext3 or ext4, refer the Howto section of this site for details.

Oh I understand, thank you.

So when I get the USB drive working I guess I then have to mount the work station drive, that contains the backup, to the server manually.  Then I have to copy the backup files to the USB drive over the local LAN.

The restore does still seem to be running, but do you think I would be better off doing it the local USB route anyway?

TY again.
« Last Edit: April 30, 2015, 10:43:44 PM by abarron »

Offline janet

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Re: Unable to access Server manager during restore from workstation.
« Reply #24 on: April 30, 2015, 11:09:10 PM »
abarron

Stefano suggest you have only copied 126Gb, so you stil have a long way to go.
That has taken 3 days already so do you want to wait another 6 days or so ?
If something fails ie network connection, then all is lost.

You can reinstall the sme OS in 15 minutes, configure the backup in 5 minutes, transfer backup file in say an hour, then, start the backup which might finished in half a day or so, much quicker than waiting another 6 days in my books.

Your choice though.

It also seems to me that you do not have enough space on your sme server to restore that data
ie
Filesystem                          Size  Used Avail Use% Mounted on
/dev/mapper/main-root
                                        451G  127G  301G  30% /
/dev/md1                             99M   19M   76M  20% /boot
tmpfs                                  252M     0  252M   0% /dev/shm
192.168.7.4:smebackup
                                       932G  196G  737G  21% /mnt/smb

& you are trying to restore 737Gb (which is compressed) so more than that probably.

I am not sure if the actual size of the RAID 5 array is being shown.
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Re: Unable to access Server manager during restore from workstation.
« Reply #25 on: April 30, 2015, 11:22:57 PM »
Ok Janet I am going to take your advice and try and set up a USB disk.

I just realised I am guilty of a typo, the uncompressed data size is actually only about 350GB from memory.  Compressed should have been 250GB not 750GB.  That makes a significant difference but still only about half way through so I am going for USB.

If I can get that to work I will do my backups that way from now on.

Thank you for all your help, I really appreciate it.