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Linux: Encryption of a physical LVM volume doesn't imply encryption of its logical subvolumes?

- by java.is.for.desktop

Hello, everyone! I installed OpenSuse one year ago on my notebook. I created all partitions except /boot inside an LVM partition. I enabled encryption for it during setup. The system asked me a password on each boot later. Everything seemed fine... But one day I wanted to cancel the boot process and did it with SysRq REISUB. During entering this combination, the system suddenly continued to boot without any password being entered. I had no /home and no swap, but / was mounted! I checked multiple times, it was inside an "encrypted" physical LVM volume. Later I found out that OpenSuse can't encrypt / at all. There is an option to enable encryption for each logical volume, and indeed it fails for /. Later I tried Fedora. The options during partitioning were misleading by same means. I could enable "encryption" of a physical volume and each logical subvolume. With the exception that Fedora actually allowed to encrypt /. Question: What's the point of setting up "encryption" for a physical LVM volume, when it doesn't imply (real) encryption of its logical subvolumes? Did I get something wrong in this whole concept?

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WPF Formatting Issues - Automatically stretching and resizing?

- by Adam S

I'm very new to WPF and XAML. I am trying to design a basic data entry form. I have used a stack panel holding four more stack panels to get the layout I want. Perhaps a grid would be better for this, I am not sure. Here is an image of my form in action: http://yfrog.com/7gscreenshot1impp And here is the XAML code that generates it: <Window x:Class="Test1.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1" Height="224" Width="536.762"> <StackPanel Height="Auto" Name="stackPanel1" Width="Auto" Orientation="Horizontal"> <StackPanel Height="Auto" Name="stackPanel2" Width="Auto"> <Label Height="Auto" Name="label1" Width="Auto">Patient Name:</Label> <Label Height="Auto" Name="label2" Width="Auto">Physician:</Label> <Label Height="Auto" Name="label3" Width="Auto">Insurance:</Label> <Label Height="Auto" Name="label4" Width="Auto">Therapy Goals:</Label> </StackPanel> <StackPanel Height="Auto" Name="stackPanel3" Width="Auto"> <TextBox Height="Auto" Name="textBox1" Width="Auto" Padding="3" Margin="1" /> <TextBox Height="Auto" Name="textBox2" Width="Auto" Padding="3" Margin="1" /> <TextBox Height="Auto" Name="textBox3" Width="Auto" Padding="3" Margin="1" /> <TextBox Height="Auto" Name="textBox4" Width="Auto" Padding="3" Margin="1" /> </StackPanel> <StackPanel Height="Auto" Name="stackPanel4" Width="Auto"> <Label Height="Auto" Name="label5" Width="Auto">Date:</Label> <Label Height="Auto" Name="label6" Width="Auto">Patient Phone:</Label> <Label Height="Auto" Name="label7" Width="Auto">Facility:</Label> <Label Height="Auto" Name="label8" Width="Auto">Referring Physician:</Label> </StackPanel> <StackPanel Height="Auto" Name="stackPanel5" Width="Auto"> <TextBox Height="Auto" Name="textBox5" Width="Auto" Padding="3" Margin="1" /> <TextBox Height="Auto" Name="textBox6" Width="Auto" Padding="3" Margin="1" /> <TextBox Height="Auto" Name="textBox7" Width="Auto" Padding="3" Margin="1" /> <TextBox Height="Auto" Name="textBox8" Width="Auto" Padding="3" Margin="1" /> </StackPanel> </StackPanel> </Window> What I really want is for the text boxes to stretch equally to fill up the space horizontally. I would also like for the controls in each vertical stackpanel to 'spread out' evenly as the window is resized vertically. Can any of you experts out there help me out?

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php form validation with javascript

- by Jon Hanson

hi guys i need help trying to figure out why the alert box doesnt show up when i run this. im also new at programming. html i due just fine. im currently taking a php class, and the teacher thought it would be fun to have us create a form and validate it. my problem is i am trying to call the function which then would validate it. My problem is its not calling it, and i cant quite figure out why. please help? jons viladating <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"> <head> <link rel="stylesheet" href="decor.css" type="text/css"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>jons viladating</title> <script type="text/javascript">  </script> <h1>jons validations test</h1> </head> <body> <div id="rightcolumn"> <img src="hula.gif" align="right"/> </div> <text align="left"> <form name="jon" action="formoutput.php" onsubmit="return showjonsForm()" Method="post"> <fieldset style="width:250px"> <label> first name</label> <input type="text" name="fname" size="15" maxlength="22" onBlur="checkRequired( this,'fname')"/><br /> <label>last name</label> <input type="text" name="lname" size="10" maxlength="22"> <br /> </fieldset> <fieldset style="width:250px"> <label>address</label> <input type="text" name="adrs1" size="10" maxlength="30"><br /> <span class="msg_container" id="adrs2"></span><br /> <label>city</label> <input type="text" name="city" size="10" maxlength="15"><br /> <span class="msg_container" id="city"></span><br /> <label>state</label> <input type="text" name="state" size="10" maxlength="2"><br /> <span class="msg_container" id="state"></span><br /> <label>zip</label> <input type="text" name="zip" size="10" maxlength="5"><br /> </fieldset> <fieldset style="width:250px"> <label>phone</label> <input type="text" name="phone" size="10" maxlength="10"><br /> <div>please input phone number in this format 1234567892 thank you </div> <label>email</label> <input type="text" name="email" size="10" maxlength="22"><br /> <div> password must have 1 number upper case and minimum of 6 charcters</div> <label>password</label> <input type="text" name="pw2" size="10" maxlength="12"><br /> <label>select gender type</label> <select name="sex" size="1" <br /> <option>male</option> <option>female</option> <option>timelord</option> </select> <label>date of birth</label> <input type="text name="dob" size="8" maxlength="8"/> <div> would you like to know know more</div> <label> yes</label> <input type="checkbox" checked="checked" name="check" /> </fieldset> <input type="submit"/></form> </form> <div id="footer"> <img src="laps2.jpg"> <img src="orange.jpg"><img src="ok.jpg"> </div> </body> </html>

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Big Data – What is Big Data – 3 Vs of Big Data – Volume, Velocity and Variety – Day 2 of 21

- by Pinal Dave

Data is forever. Think about it – it is indeed true. Are you using any application as it is which was built 10 years ago? Are you using any piece of hardware which was built 10 years ago? The answer is most certainly No. However, if I ask you – are you using any data which were captured 50 years ago, the answer is most certainly Yes. For example, look at the history of our nation. I am from India and we have documented history which goes back as over 1000s of year. Well, just look at our birthday data – atleast we are using it till today. Data never gets old and it is going to stay there forever. Application which interprets and analysis data got changed but the data remained in its purest format in most cases. As organizations have grown the data associated with them also grew exponentially and today there are lots of complexity to their data. Most of the big organizations have data in multiple applications and in different formats. The data is also spread out so much that it is hard to categorize with a single algorithm or logic. The mobile revolution which we are experimenting right now has completely changed how we capture the data and build intelligent systems. Big organizations are indeed facing challenges to keep all the data on a platform which give them a single consistent view of their data. This unique challenge to make sense of all the data coming in from different sources and deriving the useful actionable information out of is the revolution Big Data world is facing. Defining Big Data The 3Vs that define Big Data are Variety, Velocity and Volume. Volume We currently see the exponential growth in the data storage as the data is now more than text data. We can find data in the format of videos, musics and large images on our social media channels. It is very common to have Terabytes and Petabytes of the storage system for enterprises. As the database grows the applications and architecture built to support the data needs to be reevaluated quite often. Sometimes the same data is re-evaluated with multiple angles and even though the original data is the same the new found intelligence creates explosion of the data. The big volume indeed represents Big Data. Velocity The data growth and social media explosion have changed how we look at the data. There was a time when we used to believe that data of yesterday is recent. The matter of the fact newspapers is still following that logic. However, news channels and radios have changed how fast we receive the news. Today, people reply on social media to update them with the latest happening. On social media sometimes a few seconds old messages (a tweet, status updates etc.) is not something interests users. They often discard old messages and pay attention to recent updates. The data movement is now almost real time and the update window has reduced to fractions of the seconds. This high velocity data represent Big Data. Variety Data can be stored in multiple format. For example database, excel, csv, access or for the matter of the fact, it can be stored in a simple text file. Sometimes the data is not even in the traditional format as we assume, it may be in the form of video, SMS, pdf or something we might have not thought about it. It is the need of the organization to arrange it and make it meaningful. It will be easy to do so if we have data in the same format, however it is not the case most of the time. The real world have data in many different formats and that is the challenge we need to overcome with the Big Data. This variety of the data represent represent Big Data. Big Data in Simple Words Big Data is not just about lots of data, it is actually a concept providing an opportunity to find new insight into your existing data as well guidelines to capture and analysis your future data. It makes any business more agile and robust so it can adapt and overcome business challenges. Tomorrow In tomorrow’s blog post we will try to answer discuss Evolution of Big Data. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Big Data, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL

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HTML - Correct way of coding a checkbox with a Label.

- by egarcia

I've been using formtastic in order to generate HTML forms on rails applications. My question, however, is really HTML-related. Today I found a strange behaviour on the way formtastic generates checkboxes (fields of type :boolean on formtastic lingo). The rest of the fields (non-checkboxes) are generated this way: <li> <label for="my_textbox_field">My TextBox</label> <input id="my_textbox_field" type="text" ... > </li> Checkboxes, however, are enclosed inside their <label> tags completely - like this: <li> <label for="my_boolean_field"> <input id="my_boolean_field" type="checkbox" ... > This is my boolean field </label> </li> Formtastic phylosophy seems to be based on the Learning to Love Forms presentation. In effect, on slide 36 of that presentation this structure is suggested for checkboxes. I guess in the presentation itself the presenter explained why this was done, but it is not written on the slides. Can anyone tell me why enclosing checkboxes inside their <label> tag might be a good idea, as opposed to putting them outside, like with textboxes?

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Inflector::humanize($key) converts Date of joining TO Date Of Joining

- by Aruna

Hi, I have a Form and i am submitting them like using function submit($formid = null,$fillerid=null) { $this->data['Result']['form_id']=$formid; $this->data['Result']['submitter_id']=$fillerid; $this->data['Result']['submitter']=$this->Session->read('filler'); echo "submitter: ".$this->Session->read('filler'); $results=$this->Form->hasResults($this->data); //echo http_build_query($_POST); if(empty($results)){ foreach ($_POST as $key => $value): if(is_array($value)){ $value = implode('', $_POST[$key]); $this->data['Result']['value']=$value; } else{ $this->data['Result']['value']=$value; } $this->data['Result']['form_id']=$formid; $this->data['Result']['submitter_id']=$fillerid; $this->data['Result']['label']=Inflector::humanize($key); $this->data['Result']['submitter']=$this->Session->read('filler'); $this->Form->submitForm($this->data); endforeach; $this->Session->setFlash('Your entry has been submitted.'); } I am having A fORM LIKE <form method="post" action="/FormBuilder/index.php/forms/submit/1/4" id="ResultSubmit"> <div class="input text"><label for="1">Firstname</label><input type="text" value="" style="width: 300px;" id="1" name="Firstname"/></div> <br/> <div class="input text"><label for="2">Last Name</label><input type="text" value="" style="width: 300px;" id="2" name="Last Name"/></div> <br/> <div class="input text"><label for="3">Age</label><input type="text" value="" style="width: 200px;" id="3" name="Age"/></div> <br/> <center> <span id="errmsg3"/> </center> <div class="input textarea"><label for="4">Address</label><textarea style="height: 300px;" id="4" rows="6" cols="30" name="Address"/></div> <br/> <div class="input text"><label for="5">Date Of Joining</label><input type="text" value="" style="width: 300px;" id="5" name="Date of joining"/></div><br/> <div class="input text"><label for="6">Email - Id</label><input type="text" value="" style="width: 300px;" id="6" name="Email - id"/></div> <br/> <div class="input text"> <label for="7">Personal Number</label><input type="text" value="" maxlength="3" style="width: 30px;" id="7" name="Personal Number[]"/><input type="text" value="" style="width: 30px;" maxlength="3" id="7-1" name="Personal Number[]"/><input type="text" value="" style="width: 70px;" maxlength="4" id="7-2" name="Personal Number[]"/></div> <span id="errmsg7"/> <br/> <div class="input select"><label for="8">Gender</label><select id="8" name="Gender"> MaleFemale <div class="input text"><label for="9">Official Number</label><input type="text" value="" style="width: 200px;" id="9" name="Official Number"/></div><br/> <div class="input select"><label for="10">Experience</label><select id="10" name="Experience"> <option value="Fresher">Fresher</option><option yrs="" 5="" value="Below">Below 5 Yrs</option><option yrs="" 10="" value="Above">Above 10 yrs</option></select></div><br/> actually My input has the names as Firstname Last Name Age Address Date of joining Email - id Personal Number Gender Official Number But when i use Inflector::humanize($key) for saving the names which has white space characters they have converted into like Date Of Joining i.e.., O and J becomes Capital letters... But i need to save them as such as Date of joining.. How to do so???

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UITableViewCell repeating problem

- by cannyboy

I have a UItableview with cells. Some cells have uilabels and some have uibuttons. The UIbuttons are created whenever the first character in an array is "^". However, the uibuttons repeat when i scroll down (appearing over the uilabel).. and then multiply over the uilabels when I scroll up. Any clues why? My voluminous code is below: - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { const NSInteger LABEL_TAG = 1001; UILabel *label; UIButton *linkButton; //NSString *linkString; static NSString *CellIdentifier; UITableViewCell *cell; CellIdentifier = @"TableCell"; cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; label = [[UILabel alloc] initWithFrame:CGRectZero]; [cell.contentView addSubview:label]; [label setLineBreakMode:UILineBreakModeWordWrap]; [label setMinimumFontSize:FONT_SIZE]; [label setNumberOfLines:0]; //[label setBackgroundColor:[UIColor redColor]]; [label setTag:LABEL_TAG]; NSString *firstChar = [[paragraphs objectAtIndex:indexPath.row] substringToIndex:1]; NSLog(@"firstChar %@", firstChar); NSLog(@"before comparison"); if ([firstChar isEqualToString:@"^"]) { // not called NSLog(@"BUTTON"); //[label setFont:[UIFont boldSystemFontOfSize:FONT_SIZE]]; linkButton = [UIButton buttonWithType:UIButtonTypeCustom]; linkButton.frame = CGRectMake(CELL_CONTENT_MARGIN, CELL_CONTENT_MARGIN, 280, 30); [cell.contentView addSubview:linkButton]; NSString *myString = [paragraphs objectAtIndex:indexPath.row]; NSArray *myArray = [myString componentsSeparatedByCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@"*"]]; NSString *noHash = [myArray objectAtIndex:1]; [linkButton setBackgroundImage:[UIImage imageNamed:@"linkButton.png"] forState:UIControlStateNormal]; linkButton.adjustsImageWhenHighlighted = YES; [linkButton setTitle:noHash forState:UIControlStateNormal]; linkButton.titleLabel.font = [UIFont systemFontOfSize:FONT_SIZE]; [linkButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal]; [linkButton setTag:indexPath.row]; [linkButton addTarget:self action:@selector(openSafari:) forControlEvents:UIControlEventTouchUpInside]; //size = [noAsterisks sizeWithFont:[UIFont boldSystemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap]; [label setBackgroundColor:[UIColor clearColor]]; [label setText:@""]; } cell.selectionStyle = UITableViewCellSelectionStyleNone; } else { label = (UILabel *)[cell viewWithTag:LABEL_TAG]; NSString *firstChar = [[paragraphs objectAtIndex:indexPath.row] substringToIndex:1]; NSLog(@"firstChar %@", firstChar); NSLog(@"before comparison"); if ([firstChar isEqualToString:@"^"]) { NSLog(@"cell not nil, reusing linkButton"); linkButton = (UIButton *)[cell viewWithTag:indexPath.row]; } } if (!label) label = (UILabel*)[cell viewWithTag:LABEL_TAG]; NSString *textString = [paragraphs objectAtIndex:indexPath.row]; NSString *noAsterisks = [textString stringByReplacingOccurrencesOfString:@"*" withString:@""] ; CGSize constraint = CGSizeMake(CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), 20000.0f); CGSize size; NSString *firstChar = [[paragraphs objectAtIndex:indexPath.row] substringToIndex:1]; //NSLog(@"firstChar %@", firstChar); if ([firstChar isEqualToString:@"^"]) { NSLog(@"BUTTON2"); if (!linkButton) linkButton = (UIButton*)[cell viewWithTag:indexPath.row]; linkButton = [UIButton buttonWithType:UIButtonTypeCustom]; linkButton.frame = CGRectMake(CELL_CONTENT_MARGIN, CELL_CONTENT_MARGIN, 280, 30); [cell.contentView addSubview:linkButton]; NSString *myString = [paragraphs objectAtIndex:indexPath.row]; NSArray *myArray = [myString componentsSeparatedByCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@"*"]]; NSString *noHash = [myArray objectAtIndex:1]; [linkButton setBackgroundImage:[UIImage imageNamed:@"linkButton.png"] forState:UIControlStateNormal]; linkButton.adjustsImageWhenHighlighted = YES; [linkButton setTitle:noHash forState:UIControlStateNormal]; linkButton.titleLabel.font = [UIFont systemFontOfSize:FONT_SIZE]; [linkButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal]; [linkButton setTag:indexPath.row]; [linkButton addTarget:self action:@selector(openSafari:) forControlEvents:UIControlEventTouchUpInside]; size = [noAsterisks sizeWithFont:[UIFont boldSystemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap]; [label setBackgroundColor:[UIColor clearColor]]; [label setText:@""]; } else if ([firstChar isEqualToString:@"*"]) { size = [noAsterisks sizeWithFont:[UIFont boldSystemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap]; [label setFont:[UIFont boldSystemFontOfSize:FONT_SIZE]]; [label setText:noAsterisks]; NSLog(@"bold"); } else { size = [noAsterisks sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap]; [label setFont:[UIFont systemFontOfSize:FONT_SIZE]]; [label setText:noAsterisks]; } [label setFrame:CGRectMake(CELL_CONTENT_MARGIN, CELL_CONTENT_MARGIN, CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), MAX(size.height, 20.0f))]; cell.selectionStyle = UITableViewCellSelectionStyleNone; cell.accessoryType = UITableViewCellAccessoryNone; return cell; }

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Is there a way to change the default sound volume on startup in windows?

- by Logan Dam

I've got a Creative X-Fi Titanium running on Windows 8, which works great, but the drivers have this weird quirk where it sets my headphones volume at 30% every time I boot if I have fast boot enabled. If I disable fast boot then it remembers my previous volume but I don't want to disable fast boot any more (I have an SSD, I want to use it :P) I've asked a similar question here before but as you can see the only "solution" was to disable fast boot, which I don't want to do anymore. Is there a command line tool that will let me set my volume or something similar that I can chuck in a batch file and run on startup, or anything else similar?

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How to back up a network volume to my Time Capsule?

- by Mike

I have a Time Capsule that I'm using for my backups. I have a network volume (coincidentally on the same time capsule) that I'd like to back up as well. How can I tell Time Machine to back up network volumes in addition to my main laptop hard drive? PS: yes, I know this setup isn't ideal. It'll incur 2x network overhead when backing up the network volume, plus my data won't be safe in the event of a drive failure since both copies will be on the same disk. However, it will give me some small amount of safety in the event I accidentally delete files on the network volume, among other things.

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Spanned volumes on new install

- by Noio

My Windows 7 Release Candidate is about to expire, so I'm going to do a clean install of a retail version. I have two volumes, on four physical drives, as follows: Disk 0: Spanned Volume (D:) Disk 1: Primary Partition, Boot/Windows Install (C:) Disk 2: Spanned Volume (D:) Disk 3: Spanned Volume (D:) If I install Windows to a formatted drive 1, will it still recognize the spanned volume in Disks 0, 2, and 3? The spanned volume is not redundant in any way, so the volume is 1.5TB consisting of three 500GB disks. I don't have the space to do an external backup, and I thought it was impossible to convert a spanned volume back to a basic volume.

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GlusterFS as elastic file storage?

- by Christopher Vanderlinden

Is there any way to run GlusterFS in a replicated mode, but with the ability to dynamically scale the volume up and down? Say you have 3 servers all running glusterd. your Gluster volume would have to be setup with replica 3 gluster volume create test-volume replica 3 192.168.0.150:/test-volume 192.168.0.151:/test-volume 192.168.0.152:/test-volume You would then mount it as say \mnt\gfs_test What happens when I want to add 2 more servers to the storage pool and then also use them in this volume? Is there any easy way to expand the volume AND increase that replica count to 5? My end goal is to run this on EC2 instances, say 3 Apache front ends, with the webroot setup on the gluster volume mount. My concern is that if I ever need to spin up a server, I would want the server to not only be an additional Apache front end, but also another server in the gluster file system, adding to fault tolerance as well as possibly giving a slight boost in read speed. Maybe there are better options that would fit the bill here? Thanks.

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Safe to Use an Amazon EBS Volume While Snapshot in Progress?

- by Justin Noel

Is it safe to use an EBS volumne while a snapshot is being created? I've currently got a 100Gb EBS volume mounted. I am in the process of snapshotting it. Goodness it's slow!! It's going to end up taking more than 45 minutes to snapshot. My question : Is the EBS volume already copied and just being saved somewhere? Or, is the snapshot actively copying from my mounted volume right now? Basically, if I start using it before the snapshot completes, am I hosed? I just can't believe it takes this long to copy. There really isn't even 100GB in use. It's more like 25Gb.

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How can I remount an NFS volume on Red Hat Linux?

- by user76177

I changed the user id of a user on an NFS client that mounts a volume from another server. My goal is to get the 2 users to have the same id, so that both servers can read and write to the volume. I changed the id successfully on the client system, but now when I look at the NFS mount from that system, it reports the files being owned by the old id. So it looks like I need to "refresh" that mount. I have found many instructions on how to remount, but each seems slightly different according to the type of system. Is there a simple command I can run to get the mounted volume to refresh so that it interprets the new user settings?

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How to open a TrueCrypt volume quickly on a Mac?

- by ssc

Whenever I need to access data stored in the TrueCrypt-protected volume on my MacBook, I need to start TrueCrypt from the Dock, select the volume file, click mount, enter the password and then open a Finder window and browse to the volume. I want a quicker way, e.g. double-click something on the desktop (and/or press a hotkey combination), enter the password and have a Finder window pop up. I have done an extensive research on the TrueCrypt website, Apple Automator and some other approaches, but nothing really seems come up. Has anyone realized the approach described ?

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Does /boot safe on top of a lvm LV (logical volume)?

- by fantoman

Title already asked the question. More specifically, I read in some documents that logical volumes are nice in general but not for /boot in a linux system. They say that bootloaders don't understand LVM volumes, so create a separate partition for /boot out of lvm. I recently installed Ubuntu server (9.10) for my home server, but by default /boot is created in the LVM. Everything is fine now, but I am not sure it is safe to use /boot in LVM. Second question is do I really need a physical partition (volume)(pv) for /boot or is it equally fine if I put it into a logical volume (lv) on top of a single shared volume group. Thanks in advance.

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Truecrypt and hidden volumes

- by user51166

I would like to know the opinion of some users using (or not) the hidden volume encryption feature of Truecrypt. Personally until now I never used this feature: on Windows I encrypt the system drive as a standard volume, on GNU/Linux I encrypt using LUKS which is Truecrypt's equivalent to standard volume. As for data I use the standard volume approach as well. I read that this feature is nice and all, but it isn't really used by most people. Do you use it or not? Why? Do you only store inside it VERY sensible data or what else? Because technically speaking doing a hidden volume which has (almost) the same size as the outer one doesn't make sense: the outer volume will be encrypted but no data will be on it, which will appear very strange. So not only one has to plan which data store where, but has even to remember each time to mount the outer volume with hidden volume protection (otherwise there'll be a data loss when writing to it). It's a bit messy: hidden OS + outer OS + outer volume + hidden volume = 4 partitions :( Similar question about the hidden operating system (which I don't use [yet]).

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How to repair Creative Inspire Speakers 2.1 Volume Control Wheel?

- by akula

Due to dust or so, the Volume Control Wheel does not work properly. Volume goes to one speaker, and other gets muted. Vice versa. When I carefully turn the wheel sometimes the Volume works properly or sometimes with noise or muted one side. As I write this, I've cleaned it up with Petrol drops. PCB is drying. I chose Petrol because Contact Cleaner is expensive solution. Am I correct or any other method could be used? Thank you.

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Can I lvreduce after lvextend without losing the ext4 partition inside it?

- by DrSAR

In a botched attempt to move my root partition from one disk to another I have done the following: added new disk partitioned it with parted (part #3 is now almost totally filling the disk) initialized a physical volume $ pvcreate /dev/sdb3 Physical volume "/dev/sdb3" successfully created extended the volume group to include this new physical disk $ vgextend myvg /dev/sdb3 Volume group "myvg" successfully extended extended the logical volume (I think this is where I ballsed it up: I think I should have pvmove'ed stuff to the new pv in that group - can someone confirm?) $ lvextend /dev/mapper/myvg-root /dev/sdb3 I would now like to undo the lvextend and then proceed with the original plan of moving the content of the old physical volume over to the new physical volume. Can I reduce the logical volume (I have not yet touched the ext4 partition that sits in /dev/mapper/myvg-root with something like resizefs) without fear of damaging the ext4 filesystem? If so, how do I tell it to reduce by exactly the right amount? $ lvreduce --by-exactly-the-amount-occupied-by-PV /ev/sdb3 /dev/mapper/myvg-root

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[Flex] How to open a menu automatically with a shortcut ?

- by Sris

Hi there I have a MenuBar which contains general menu items like File, View, Tools ,Help. I have sub items in each of those menuitems. The problem is that i want to open the 'File' menu automatically when i press Alt+f key. I could capture the keyevents on the view. But how to open the File Menu of the MenuBar (what is the function that needs to be called from MenuBar Class to popup those sub menuitems) ? I have searched for some information on google .. but cudnt find. or else if u have any better solution or example ..plz do post it. <root> <menuitem label="File"> <menuitem label="New" enabled="false"/> <menuitem label="Open.." enabled="false"/> <menuitem label="Save" enabled="false"/> <menuitem label="Restore" enabled="false"/> <menuitem label="Print" enabled="true"/> <menuitem type="seperator" enabled="false"/> <menuitem label="Exit" enabled="true"/> </menuitem> <menuitem label="View" accesskey="v"> <menuitem label="Zoom In" enabled="true" maxValue="200"/> <menuitem label="Zoom Out" enabled="true" maxValue="25"/> </menuitem> <menuitem label="Tools" enabled="false"> <menuitem label="item1" enabled="false"/> <menuitem label="item2" enabled="false"/> </menuitem> </root> Thanks in advance :) Sriss

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Creating UIButton using helper method

- by ddawber

I have a subclass of UITableView and in it I want to generate number of labels that share the same properties (font, textColor, backgroundColor, etc.). I decided the easiest way to achieve this would be to create a helper method which creates the label with some common properties set: - (UILabel *)defaultLabelWithFrame:(CGRect)frame { UILabel *label = [[UILabel alloc] initWithFrame:frame]; label.font = [UIFont fontWithName:@"Helvetica" size:14]; label.textColor = [UIColor colorWithWhite:128.0/255.0 alpha:1.0]; label.backgroundColor = [UIColor clearColor]; return label; } I use the method like this: UILabel *someLabel = [self defaultLabelWithFrame:CGRectMake(0,0,100,100)]; [self addSubview:someLabel]; [someLabel release]; My concern here is that when creating the label in the method it is retained, but when I then assign it to someLabel, it is retained again and I have no way of releasing the memory when created in the method. What would be best the best approach here? I fee like I have two options: Create a subclass of UILabel for the default label type. Create an NSMutableArray called defaultLabels and store the labels in this: - (UILabel *)defaultLabelWithFrame:(CGRect)frame { UILabel *label = [[UILabel alloc] initWithFrame:frame]; label.font = [UIFont fontWithName:@"Helvetica" size:14]; label.textColor = [UIColor colorWithWhite:128.0/255.0 alpha:1.0]; label.backgroundColor = [UIColor clearColor]; [defaultLabels addObject:label]; [labels release]; //I can release here return [defaultLabels lastObject]; //I can release defaultLabels when done } I appreciate your thoughts. Cheers.

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How to bind a label inside a gridview to another table?

- by Kolten

I have a very standard Gridview, with Edit and Delete buttons auto-generated. It is bound to a tableadapter which is linked to my "RelationshipTypes" table. dbo.RelationshipTypes: ID, Name, OriginConfigTypeID, DestinationConfigTypeID I wish to use a label that will pull the name from the ConfigTypes table, using the "OriginConfigTypeID" and "DestinationTypeID" as the link. dbo.ConfigTypes: ID, Name My problem is, I can't automatically generate Edit and Delete buttons using an Inner Join in my dataset. Or can I? FOllowing is my code: <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" AutoGenerateDeleteButton="True" AutoGenerateEditButton="True" CssClass="TableList" DataKeyNames="ID" DataSourceID="dsRelationShipTypes1"> <Columns> <asp:BoundField DataField="ID" HeaderText="ID" InsertVisible="False" ReadOnly="True" SortExpression="ID" Visible=False/> <asp:TemplateField HeaderText="Origin" SortExpression="OriginCIType_ID"> <EditItemTemplate>  <asp:DropDownList Enabled=true ID="DropDownList2" runat="server" DataSourceID="dsCIType1" DataTextField="Name" DataValueField="ID" SelectedValue='<%# Bind("OriginCIType_ID") %>'> </asp:DropDownList> </EditItemTemplate> <ItemTemplate>   <asp:Label ID="Label2" runat="server" Text='<%# Bind("OriginCIType_ID") %>'></asp:Label> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="Name" SortExpression="Name"> <EditItemTemplate> <asp:TextBox ID="TextBox3" runat="server" Text='<%# Bind("Name") %>'></asp:TextBox> </EditItemTemplate> <ItemTemplate> <asp:Label ID="Label3" runat="server" Text='<%# Bind("Name") %>'></asp:Label> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="Destination" SortExpression="DestinationCIType_ID"> <EditItemTemplate> <asp:DropDownList ID="DropDownList3" runat="server" DataSourceID="dsCIType1" DataTextField="Name" DataValueField="ID" SelectedValue='<%# Bind("DestinationCIType_ID") %>'> </asp:DropDownList> </EditItemTemplate> <ItemTemplate> <asp:Label ID="Label1" runat="server" Text='<%# Bind("DestinationCIType_ID") %>'></asp:Label> </ItemTemplate> </asp:TemplateField> </Columns> </asp:GridView> So I did try to create my own edit and delete buttons, but kept receiving the error "cannot find update method" or something similar. Do I have to manually code the delete and update methods in my code-behind?

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How can I automatically mute the volume at every boot?

- by ændrük

Sometimes I forget to enable mute before shutting down my laptop. Can I set it up to be muted by default every time Ubuntu boots, before the login screen is displayed? When I try DoR's suggestion of sudo alsactl store, the settings stored in /var/lib/alsa/asound.state are lost on the next reboot. Something is using this file to automatically save the current volume settings every time I reboot.

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What is the purpose of the canonical view volume?

- by breadjesus

I'm currently learning OpenGL and haven't been able to find an answer to this question. After the projection matrix is applied to the view space, the view space is "normalized" so that all the points lie within the range [-1, 1]. This is generally referred to as the "canonical view volume" or "normalized device coordinates". While I've found plenty of resources telling me about how this happens, I haven't seen anything about why it happens. What is the purpose of this step?

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Selected value from drop-down list doesn't post from jquery dialog

- by RememberME

I have a jQuery dialog. All of the fields are posting correctly except for the drop-downs, the value is getting passed as null rather than the selected value. <div id="popupCreateCompany" title="Create a new company"> <form> <fieldset> <p> <label for="company_name">Company Name:</label> <%= Html.TextBox("company_name") %> </p> <p> <label for="company_desc">Company Description:</label> <%= Html.TextBox("company_desc") %> </p> <p> <label for="address">Address:</label> <%= Html.TextBox("address") %> </p> <p> <label for="city">City:</label> <%= Html.TextBox("city") %> </p> <p> <label for="state">State:</label> <%= Html.TextBox("state") %> </p> <p> <label for="zip">Zip:</label> <%= Html.TextBox("zip") %> </p> <p> <label for="website">Website:</label> <%= Html.TextBox("website", "http:/") %> </p> <p> <label for="sales_contact">Sales Contact:</label> <%= Html.DropDownList("sales_contact", Model.SelectSalesContacts, "** Select Sales Contact **") %> </p> <p> <label for="primary_company">Primary Company:</label> <%= Html.DropDownList("primary_company", Model.SelectPrimaryCompanies, "** Select Primary Company **") %> </p> </fieldset> </form> jQuery: $('#popupCreateCompany').dialog( { autoOpen: false, modal: true, buttons: { 'Add': function() { var dialog = $(this); var form = dialog.find('input:text'); $.post('/company/create', $(form).serialize(), function() { dialog.dialog('close'); }) }, 'Cancel': function() { $(this).dialog('close'); } } }); $("#create-company").click(function() { $('#popupCreateCompany').dialog('open'); }); My SelectList definitions: public class SubcontractFormViewModel { public subcontract Subcontract { get; private set; } public SelectList SelectPrimaryCompanies { get; set; } public MultiSelectList SelectService_Lines { get; private set; } public SelectList SelectSalesContacts { get; private set; } public SubcontractFormViewModel(subcontract subcontract) { SubcontractRepository subcontractRepository = new SubcontractRepository(); Subcontract = subcontract; SelectPrimaryCompanies = new SelectList(subcontractRepository.GetPrimaryCompanies(), "company_id", "company_name"); SelectService_Lines = new MultiSelectList(subcontractRepository.GetService_Lines(), "service_line_id", "service_line_name", subcontractRepository.GetSubcontractService_Lines(Subcontract.subcontract_id)); SelectSalesContacts = new SelectList(subcontractRepository.GetContacts(), "contact_id", "contact_name"); } }

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List of well known VSS Writer GUIDs

- by Hannes de Jager

Is there a consolidated list of GUIDs for well known VSS writers available somewhere? At least the Microsoft ones like System State, Exchange, SQL, Sharepoint etc.

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