NASLite Network Attached Storage

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Task-specific simplicity with low hardware requirements.
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 Post subject: Journal Question
PostPosted: Tue Oct 20, 2009 7:41 am 
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Joined: Thu Mar 01, 2007 10:39 am
Posts: 15
I have just realized that I have not set a journal for my storage drives. Can I set this option now and not lose anything on my drives? just want to be sure before I do. Thanks...love this program!!!


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 Post subject: Re: Journal Question
PostPosted: Tue Oct 20, 2009 8:16 am 
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Joined: Sun Apr 02, 2006 9:05 pm
Posts: 1688
Location: Up State NY in the USA!!!!
Yes you can and there is no problem. If you built it using NL 2.X than the FS is already journaled.

Mike


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 Post subject: Re: Journal Question
PostPosted: Tue Oct 20, 2009 6:08 pm 
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Joined: Thu Mar 01, 2007 10:39 am
Posts: 15
I used M2 V1.02 (latest). How can I tell if journal is on?


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 Post subject: Re: Journal Question
PostPosted: Tue Oct 20, 2009 7:45 pm 
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Joined: Sun Apr 02, 2006 9:05 pm
Posts: 1688
Location: Up State NY in the USA!!!!
By default it is on, just read what it says about journaling in the telnet window if you try to apply a journal. M2 builds an EXT3 file system, hence journaled FS.

Mike


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 Post subject: Re: Journal Question
PostPosted: Thu Oct 22, 2009 12:47 am 
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Joined: Sat Nov 19, 2005 6:39 pm
Posts: 633
Location: California
And if you check the "Server Storage Disk-x" page(s) under the entry "Filesystem features:" is would show "has_journal".


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 Post subject: Re: Journal Question
PostPosted: Thu Oct 22, 2009 2:38 am 
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Joined: Sat Nov 19, 2005 6:39 pm
Posts: 633
Location: California
Interestingly ... the Journal appears to be NOT automatic -- at least on REGULAR NASLite ( I never used M2 ). On a test-environment-server with a beta copy of the soon to be released NASLite 2.6 I just did a re-format (of an existing NL2 ext3 (with journal) in-use data disk), set it to RW, reboot, then listed the "Filesystem features:" and "has_journal" was not set. Followed this by option 7 (Apply a Journal) ... and there it was ... now it's "has_journal". But then I also created a Mirror on this disk. Because the "Filesystem state:" said "not_clean" (unexpectedly -- I had expected the "Apply a Journal" to set the "clean" flag) I also rebooted and was surprised to see the system do a filecheck during restart. Now the system has "Filesystem features: has_journal", plus "Filesystem state: clean" and its Mirror (set to start in about 45 minutes).

Moral: If you prefer the journal (and I would recommend that -- the space & performance overhead is small for most environments) always check your "Filesystem Features" and do that additional reboot (with system-auto-initiated filecheck) before you add major amounts of data to the disk.


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