Case#18252370 - ReadyNAS NV+ Cannot create a snapshot

[clindau]

Case#18252370 - ReadyNAS NV+ Cannot create a snapshot (bad superblock)

I could not access this case number from my NetGear Account. So I created another that I can now access. The case number is 18257010 and is the same as Case#18252370 from yesterday.

Cannot complete Volume Scan...
/var/log/fsck.log
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
***** File system check performed at Tue Mar 27 23:18:32 CDT 2012 *****
fsck 1.40.2 (12-Jul-2007)
e2fsck 1.40.2 (12-Jul-2007)
c: clean, 739701/27197440 files, 15772476/54335488 blocks
e2fsck 1.40.2 (12-Jul-2007)
Couldn't find ext2 superblock, trying backup blocks...
fsck.ext3: Bad magic number in super-block while trying to open /dev/c/c_2012_03_24_04_00M

The superblock could not be read or does not describe a correct ext2
filesystem. If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
e2fsck -b 8193 <device>
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
/var/log/messages
Mar 28 00:57:05 Johnny5 kernel: EXT3-fs warning: mounting fs with errors, running e2fsck is recommended
Mar 28 00:57:05 Johnny5 kernel: EXT3 FS on sda1, internal journal
Mar 28 00:57:05 Johnny5 kernel: EXT3-fs: mounted filesystem with ordered data mode.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
----------------------------------------------------------------------------------
ReadyNAS:/dev/c$ ls -al
total 28
drwxr-xr-x 2 root root 4096 Mar 27 23:50 .
drwxr-xr-x 9 root root 24576 Mar 27 23:51 ..
lrwxrwxrwx 1 root root 15 Mar 27 23:50 c -> /dev/mapper/c-c
lrwxrwxrwx 1 root root 32 Mar 27 23:50 c_2012_03_24_04_00 -> /dev/mapper/c-c_2012_03_24_04_00
-------------------------------------------------------------------------------------------
ReadyNAS:/dev/mapper$ ls -rlt
total 0
crw------- 1 root root 10, 63 Jan 30 2007 control
brw-rw---- 1 root disk 254, 1 Mar 27 23:50 c-c_2012_03_24_04_00
brw-rw---- 1 root disk 254, 0 Mar 27 23:50 c-c
ReadyNAS:/dev/mapper$
-----------------------------------------------------------------------------------------------
Note:
This mount point for snapshots is missing at the root directory - c_2012_03_24_04_00 (day before last snapshot worked). All snaps point to this mount point.
I have seen where this was resolved in past posts (but different NAS), but it took Level 2/3 support to accomplish.

Any recommended steps to resolve the bad superblock issue???

If I run this "e2fsck -b 8193 <device>", then shouldn't the drive be unmounted. This is our primary drive (unmounting the file system????). We have a two drive configuration where the primary is a mirror to the second drive.

Thank-you in advance for your help,
Carl

[mdgm]

Please open a NetGear tech support (http://www.readynas.com/support) case. Edit the thread title (i.e. subject of first post in the thread) to include your case number.

[clindau]

Created Case# 18252370 Thank-you --Carl

[clindau]

I'm new to using support forums. Is this a slow process to determine a solution? Does support monitor these forums? Snapshot are an important step to our backup process.

I create another case number because I could not open case#18252370. The new Case# is 18257010. Any help is appreciated as I learn how this forum process works...

Hope this helps....

Thank-you in advance,
Carl

[amac27]

Hi Carl,

Sorry for taking this long to resolve your issue.

I believe your ReadyNAS issue is now resolved based on the case notes that I read.