WEBVTT 00:08.920 --> 00:11.390 Hello Friends will come back in this lesson. 00:11.390 --> 00:13.350 We're going to talk about LVM. 00:13.430 --> 00:20.510 That is logical volume manager in Bruin's lesson we learn how to create employment rate it. 00:20.690 --> 00:24.780 So in this lesson I would like to show you how to create and implement CLV. 00:25.040 --> 00:32.880 So first of all let's understand what is Elvie LVM is nothing but a group of different hard drives. 00:33.110 --> 00:39.800 And with that group we can create some logical partitions on that group OK with a technique. 00:39.870 --> 00:44.960 OK so such mechanism is called as the logical volume manager on Elvia. 00:45.170 --> 00:51.940 So before actually showing you how to create that let's understand it with the help of some graphics. 00:52.370 --> 00:55.270 OK suppose you have different physical. 00:55.290 --> 00:55.920 OK. 00:56.150 --> 01:00.600 Now suppose you have this full harddrive it is hiring size $5 right. 01:00.740 --> 01:01.400 OK. 01:01.490 --> 01:04.760 And this Hydro's not how any partition. 01:04.820 --> 01:12.220 So to implement the logical partition on that what do you need to do is you need to convert them into 01:12.260 --> 01:13.770 physical volumes. 01:13.960 --> 01:20.840 OK you need to convert each of these drives into physical volumes and of converting them into physical 01:20.840 --> 01:25.310 volumes you need to convert them into a larger volume group. 01:25.480 --> 01:30.890 Ok this larger volume group is the combination of all these physical drives. 01:30.980 --> 01:31.460 OK. 01:31.640 --> 01:38.210 So now it becomes apparent easier ways we can work all this file as you go about hydrides into one group 01:38.540 --> 01:41.040 then it becomes 20 gigabytes. 01:41.240 --> 01:47.960 So in this way we can create a large volume group and after creating this one group they can implement 01:47.960 --> 01:50.840 some small partitions on that. 01:50.960 --> 01:54.710 And these partitions are called as logical partitions. 01:54.910 --> 01:55.320 OK. 01:55.380 --> 02:01.760 In this way we can create all we can create a single partition of 20 byte on that. 02:01.850 --> 02:05.050 It's our choice what size we want. 02:05.300 --> 02:10.200 So in this way we can create logical partitions on that one group. 02:10.280 --> 02:15.040 So let's see practically how to actually create these things. 02:15.270 --> 02:15.540 OK. 02:15.560 --> 02:19.510 First of all you need to add three different all hard disks. 02:19.520 --> 02:20.330 OK. 02:20.390 --> 02:23.890 We learn how to add them in the previous lesson. 02:23.900 --> 02:26.360 So here let me show you that hard disk 02:31.720 --> 02:36.160 OK here you can see as DBI as DC and SDD. 02:36.260 --> 02:36.610 OK. 02:36.700 --> 02:43.720 And here I like to combine is DBMS's DC to form a group. 02:43.720 --> 02:52.060 OK and for some reason I put as deep as it is then I will show you how to use the SDD to grow or shrink 02:52.450 --> 02:53.400 the volume group. 02:53.590 --> 02:57.180 OK so first of all you create a logical partition. 02:57.190 --> 03:03.570 You need to convert our disk to physical Williams So convert into physical volumes. 03:03.640 --> 03:11.010 There is a command we retrieved will get rid of code that provide that device. 03:11.050 --> 03:16.630 So it has to be there as now. 03:16.660 --> 03:22.390 It displays the message physical volume successfully created as DNS DC. 03:22.620 --> 03:23.270 OK. 03:23.500 --> 03:28.950 Now there is a command the display of the grating. 03:28.990 --> 03:33.460 Those volumes you can view the status of the volumes. 03:33.880 --> 03:37.960 OK so here you can see it's DPN is DC. 03:38.230 --> 03:40.860 Those volumes are being created here. 03:40.960 --> 03:47.470 Here we can see the size of it so we can get the you ID of those volumes. 03:47.620 --> 03:48.160 OK. 03:48.460 --> 03:57.010 Now of creating the physical volumes we need to convert in volume group so that a larger volume group 03:57.430 --> 04:07.930 of them on the Create key which we create and here you need to provide the volume name volume group 04:07.930 --> 04:08.380 name. 04:08.410 --> 04:12.340 So I want to name it as a computer object. 04:12.430 --> 04:16.960 And after that here you need to provide the physical volume list. 04:16.960 --> 04:21.730 So here I have his TV skees. 04:22.080 --> 04:22.750 OK. 04:23.420 --> 04:29.580 Now hit Enter now here is the message William group created successfully. 04:29.680 --> 04:38.410 So after creating the volume group you can view that as the pseudo Viji display. 04:39.160 --> 04:41.590 Ok here you can see. 04:41.770 --> 04:45.440 OK let's do this again more. 04:45.670 --> 04:46.090 OK. 04:46.120 --> 04:48.630 Here you can see all the volume group. 04:48.640 --> 04:53.580 A computer is created here of size nine point nine nine gigabytes. 04:53.740 --> 04:54.230 OK. 04:54.400 --> 05:02.680 So that five gigabyte hard drives are combined to one and we get into our volume group of sites nine 05:02.680 --> 05:04.530 point nine nine gigabytes. 05:05.800 --> 05:13.350 In this way you can create and view the status of the WM group with the help of this come on. 05:13.510 --> 05:20.860 Now after creating volume group non-SS time to create logical partition on that so far that there is 05:20.860 --> 05:30.400 a common pseudo Elodie create ugly and after victory and you provide the name for the partition. 05:30.490 --> 05:35.690 So I want to set it to Matt again. 05:35.710 --> 05:38.900 Matt is a student which belongs to a computer group. 05:39.070 --> 05:39.690 OK. 05:40.030 --> 05:42.960 And then you need the court decides. 05:43.030 --> 05:50.640 So that takes sides and here I want to set it to goosy that is the Ziller bite. 05:50.720 --> 05:57.270 And here you are the group name still do and group name is computer. 05:57.330 --> 05:59.540 They hit enter. 06:00.190 --> 06:00.840 Why. 06:01.060 --> 06:01.520 Yes. 06:01.550 --> 06:01.790 OK. 06:01.800 --> 06:04.600 Now are logical volume Matt created. 06:04.750 --> 06:05.030 OK. 06:05.050 --> 06:14.460 And you can view it status with LV display as you do your the display here more. 06:14.620 --> 06:20.290 So here you can see the mat is present here and you can see it sizes Cusick or bytes. 06:20.500 --> 06:30.670 So in this way you can create a logical volume and you can also view it by getting a good deal completed. 06:31.040 --> 06:36.750 Yes and here you can see the Mac the Mac partition is present here inside this directory. 06:36.980 --> 06:42.160 OK but creating just a partition is not enough unique to format it. 06:42.370 --> 06:48.280 And then you need to mount it so reformat this hard to install a file system on it. 06:48.310 --> 06:51.640 There is a command that we always use them. 06:52.420 --> 06:57.900 If they start in 64 they can hear the new ice name. 06:57.940 --> 07:03.240 That is the Matt OK. 07:03.260 --> 07:06.220 Now we have installed the file system successfully. 07:06.500 --> 07:10.550 OK now we need to mount that somewhere. 07:10.610 --> 07:12.870 So here I will them mounted. 07:12.920 --> 07:14.150 First of all let's check. 07:14.150 --> 07:15.920 What is vitamin D. 07:16.130 --> 07:18.390 Ok there is a defective Roble. 07:18.440 --> 07:23.260 But you know I like to create a new directory computer 07:27.120 --> 07:30.400 soggy and here I will let the monkey power in. 07:30.440 --> 07:32.500 Is a new addition here. 07:32.540 --> 07:38.140 So screw mount Dell Computer. 07:38.150 --> 07:42.060 Not even the computer. 07:43.830 --> 07:44.350 OK. 07:44.590 --> 07:46.730 Now let's get inside. 07:50.880 --> 07:54.450 Here we mounted this device successfully. 07:54.450 --> 07:55.170 OK. 07:55.560 --> 08:03.420 So in this way you can create the logical volumes in this way and you can mount them and you can use 08:03.420 --> 08:03.890 them. 08:04.080 --> 08:04.670 OK. 08:04.830 --> 08:13.700 But of creating all these things here Let show you how to extend or how to reduce the logical volumes. 08:13.850 --> 08:14.390 OK. 08:14.640 --> 08:20.000 So ex-student and redos First of all let's unmount our William. 08:20.200 --> 08:20.770 OK. 08:20.850 --> 08:29.270 So pseudo you do computer Matt. 08:29.670 --> 08:30.650 OK. 08:30.770 --> 08:40.580 Now I will show you how to explain the logical way you so that is come on pseudo Elvie extend OK and 08:40.700 --> 08:50.700 extend you know deployed Besides I would like to extend it to one degree or white so here plus one and 08:50.930 --> 08:53.400 it could go wide the partition here. 08:53.560 --> 08:56.280 So can do good. 08:56.900 --> 09:07.100 Matt now here you can see signs of logical volume computer matching from boogying abide by it's OK because 09:07.100 --> 09:10.480 we have extended it up to one degree. 09:10.620 --> 09:20.470 OK so now after extending You can view the status held the display. 09:20.590 --> 09:24.850 Now here you can see it's having the sides teasing out. 09:24.990 --> 09:27.930 We know after extending. 09:27.970 --> 09:29.700 I would like to show you how good it is. 09:29.720 --> 09:31.340 It's sites hogi. 09:31.480 --> 09:40.340 So to reduce the size it is to come on Elvie reduce hogi and then size. 09:40.740 --> 09:43.330 Here you need to provide the minus sign. 09:43.540 --> 09:48.550 So in order to reduce it by one g that is what you get right. 09:48.640 --> 09:52.910 OK up to reducing it here you need to avoid this part. 09:53.110 --> 09:53.610 OK. 09:53.860 --> 09:55.030 Or that partition. 09:55.030 --> 10:04.650 So you MacT Yes we get satisfactory so it can do. 10:04.730 --> 10:09.980 So we just play one. 10:11.330 --> 10:16.210 And here you can see we get our logical volume back to Gugino right. 10:16.350 --> 10:16.830 OK. 10:16.910 --> 10:23.840 Because we reduce it by 1 but only extending or reducing is not enough. 10:23.860 --> 10:30.490 I mean I want to say that only extending will not actually increase the size you need to resize file 10:30.540 --> 10:31.690 system. 10:31.970 --> 10:40.930 So either you perform X10 or lose operation you need to resize the file system so resize its file system 10:40.940 --> 10:41.850 there is a command. 10:42.040 --> 10:46.640 First you need to run the key. 10:46.920 --> 10:47.420 OK. 10:47.600 --> 10:51.530 And then I have on our device. 10:51.700 --> 10:54.050 Bill good. 10:54.530 --> 10:55.100 Matt 10:57.870 --> 10:58.670 OK. 10:59.560 --> 11:06.780 Enough to this resize a face it will resize the file system. 11:07.100 --> 11:09.930 OK the file system is already block long nothing to do. 11:09.940 --> 11:10.750 OK. 11:11.300 --> 11:13.250 That means it's already resized. 11:13.400 --> 11:16.570 But here I want to say one thing that. 11:16.780 --> 11:25.280 And it is a warning because you don't always resize and reduce the size of your logical volume because 11:25.310 --> 11:29.980 it may corrupt your file system and you lost all your data. 11:30.320 --> 11:35.880 So creating the logical volume of once at a time is a good idea. 11:36.140 --> 11:42.470 Or you can or creating different logical volume on this on the same volume group is a good idea but 11:42.530 --> 11:46.520 always resizing or shrinking is a bad idea. 11:46.520 --> 11:48.810 It may cause your system to corrupt. 11:48.860 --> 11:52.680 OK so a word always a b c and resizing the file system. 11:53.030 --> 11:56.500 OK now of extending and reducing. 11:56.540 --> 11:58.170 I would like to show you. 11:58.310 --> 12:01.570 C'mon slow as that is. 12:01.610 --> 12:08.530 It displays the free space on your physical volumes or it can know all it shows you. 12:08.960 --> 12:09.950 Space. 12:10.190 --> 12:20.750 So here we are having is DDNOS about OK with the Viji as it displays the space on WM group free space 12:20.750 --> 12:22.030 on WM group. 12:22.190 --> 12:26.750 OK so we are having free space for our computer WM group. 12:26.750 --> 12:28.140 Seven point nine nine. 12:28.170 --> 12:34.550 Gigabytes and you can view the logical volume status Alvy as 12:37.090 --> 12:38.520 ogee in this vid. 12:38.620 --> 12:46.480 You can use these commands to make sure about the sizes of the devices. 12:46.530 --> 12:50.020 OK so let's Mombo were Levice here. 12:50.050 --> 12:52.400 Slow slow. 12:53.540 --> 13:07.280 My computer had meant computer and let's get inside computer Alice. 13:07.300 --> 13:11.850 And here we get the file system in working order. 13:11.990 --> 13:17.420 Ok so of this crucial you hope ex-student leaves the WM group. 13:17.640 --> 13:21.580 OK right now we learn how to explain under the logical volume. 13:21.970 --> 13:29.560 Here let me show you how to extend or reduce the volume groups so far that there is a command that is 13:29.570 --> 13:30.740 VGX 10. 13:30.850 --> 13:34.290 OK but you need to how physical will you enforce. 13:34.280 --> 13:40.340 So for us to create a physical one loom from the SDD device that we are hiring. 13:40.720 --> 13:49.620 So let's convert pseudo we create day and still do today. 13:49.780 --> 13:59.060 And now you added that converted all that physical volume into the world to use the command with stay 13:59.250 --> 14:00.980 on here. 14:01.090 --> 14:05.430 Roy you are welcome group name. 14:06.050 --> 14:10.040 Ok but here you need to provide the device name. 14:10.840 --> 14:12.120 As d d. 14:12.250 --> 14:15.330 Ok here is a two pronged physical bolu. 14:15.880 --> 14:20.650 OK now they don't know our physical volume to the World Group. 14:20.950 --> 14:30.130 OK now after adding the physical volume on it go we can view the status of group like this. 14:30.130 --> 14:36.040 And here you can see right now we are going to can google group that it is our whilom group of size 14:36.150 --> 14:42.890 14 for $990 bytes because we added an additional drive of ZB. 14:42.960 --> 14:52.150 Go back again in this way you can extend the size of WM group and if you want to remove that or just 14:52.510 --> 15:03.160 so you can easily remove the religious key here and deploy the group name and name the device name like 15:03.280 --> 15:05.010 this. 15:05.260 --> 15:11.260 Now it says it is removed and you can the status here again. 15:11.260 --> 15:15.870 And now we hearing it's size nine point nine ninety eight. 15:15.880 --> 15:18.960 In this way you can extend and reduce the WM group. 15:18.970 --> 15:26.830 OK now of performing all these operations to show you how to stop the Elby and or how to remove the 15:26.830 --> 15:28.380 logical volumes. 15:28.420 --> 15:32.900 So first you need to unmount the logical WM. 15:33.040 --> 15:43.550 OK so on logical volume pseudo long do computer MacT. 15:44.050 --> 15:52.180 And after unmounting there is a command pseudo Elvie remove. 15:52.190 --> 15:56.430 First you need to remove the logical volume it says. 15:56.450 --> 15:57.900 Do you really want to remove. 15:58.070 --> 16:00.470 Yes press y here. 16:00.680 --> 16:03.860 I've successfully removed after removing this. 16:03.860 --> 16:12.640 You need to remove the volume group so to remove all the command remove remove volume group again. 16:12.930 --> 16:20.410 It's successfully removed and after removing the group all the physical volumes. 16:20.930 --> 16:27.050 OK after removing the volume group you need to remove the physical volumes so remove that there is a 16:27.060 --> 16:28.320 common VB. 16:28.700 --> 16:30.070 Remove. 16:30.520 --> 16:37.110 The errors to see the hit enter. 16:37.260 --> 16:39.510 It says successfully wiped. 16:39.570 --> 16:44.910 OK OK now we have successfully removed our logical volume. 16:45.020 --> 16:51.390 Gave in this way you can create illogical values from different hard drives and combine them to a larger 16:51.390 --> 16:54.500 volume group and create different types of partition on that.