1 00:00:00,000 --> 00:00:16,920 Hey guys and welcome back. Now previously we had been talking about tools that we can 2 00:00:16,920 --> 00:00:23,519 use with respect to the EXT based file systems. Now what I want to do is to pivot and talk 3 00:00:23,519 --> 00:00:31,960 about XFS based tools. Now like I say originally XFS was tailored towards high performance but 4 00:00:31,960 --> 00:00:37,920 with advances in EXT systems the performance difference is really quite negligible but 5 00:00:37,920 --> 00:00:44,760 nevertheless traditionally red-hant based systems tend to use the XFS file system structure and 6 00:00:44,760 --> 00:00:50,879 as such we do want to be understanding some of the tools that we have at our disposal to manage 7 00:00:50,960 --> 00:00:57,719 these systems. So one of the tools that we want to be aware of is one called XFS dump. Now what 8 00:00:57,719 --> 00:01:03,160 this tool is going to do for us is going to be used in order to provide backups for a particular 9 00:01:03,160 --> 00:01:10,480 system. So if we do an LSBLK-F let's say for example we wanted to backup our boot directory so 10 00:01:10,480 --> 00:01:19,240 within boot EFI we have SDA1. If we want to backup the contents here we could do that using XFS 11 00:01:19,479 --> 00:01:26,199 dump. So the syntax we could use in this case here as we could say XFS dump dash F and then we 12 00:01:26,199 --> 00:01:31,799 would specify whereabouts we want to create our backup. So let's maybe say we put it in our 13 00:01:31,799 --> 00:01:37,959 temp directory and we call the file backup boot and then we specify what it is we want to backup. 14 00:01:37,959 --> 00:01:44,840 So we would backup boot EFI and in doing so XFS dump would allow us to take the contents here and 15 00:01:45,400 --> 00:01:52,200 back them up right here. So very very useful tool indeed. Now we also have another command with 16 00:01:52,200 --> 00:01:59,880 respect to XFS. This one is called XFS restore. So if you wanted to take the backup that you had 17 00:01:59,880 --> 00:02:04,680 stored within the temp directory I believe we called it something like say backup boot if I'm 18 00:02:04,680 --> 00:02:12,120 not mistaken. We could feed this backup to XFS restore and ultimately restore the contents of 19 00:02:12,200 --> 00:02:19,000 what we have just backed up. Similarly we also have another command called XFS underscore info. 20 00:02:19,000 --> 00:02:24,840 What this is going to do it's going to allow you to see some basic information relating to our XFS 21 00:02:24,840 --> 00:02:30,520 file system and that is information relating to currently mounted file systems. Now one of the 22 00:02:30,520 --> 00:02:38,360 most important tools at least in my opinion is the XFS repair tool. That is ultimately an analog 23 00:02:38,360 --> 00:02:45,480 to Fisk. So it works the same way Fisk does but Fisk if you remember only works on EXT based 24 00:02:45,480 --> 00:02:52,360 systems. So if you happen to have a particular partition that is formatted with XFS you will 25 00:02:52,360 --> 00:03:00,280 not be able to use Fisk on it. Instead what you could use like I say is XFS repair. So really 26 00:03:00,280 --> 00:03:07,640 understand for the purposes of the examination on EXT based systems to repair them no Fisk instead 27 00:03:07,719 --> 00:03:13,079 XFS repair is the tool we're going to be using and we can use it with really quite simple syntax 28 00:03:13,079 --> 00:03:18,119 again we can just say XFS repair and then feed the actual file system that you want to repair 29 00:03:18,119 --> 00:03:25,079 maybe it's SDB1 whatever it may be and ultimately XFS repair is going to try to find any issues and 30 00:03:25,079 --> 00:03:30,839 repair them just in the same way we see when we happen to use the Fisk command. So really for the 31 00:03:30,839 --> 00:03:36,599 purposes of the examination we just want to be aware of that we have different tools with respect 32 00:03:36,599 --> 00:03:44,359 to our XFS based file systems. We can have XFS dump which we can use to create backups we can use 33 00:03:44,359 --> 00:03:50,599 XFS restore to restore those backups if we want to be able to ascertain particular information 34 00:03:50,599 --> 00:03:57,240 about our file system we can use XFS underscore info and since we do not have the ability to use 35 00:03:57,240 --> 00:04:04,120 the Fisk tool instead we can use XFS underscore repair and ultimately receive the same type of 36 00:04:04,120 --> 00:04:10,200 functionality to find and repair problems on our file system this time when we're using XFS 37 00:04:10,200 --> 00:04:16,280 like we often are on red hat based systems. Okay doc so that is us for our quick overview 38 00:04:16,280 --> 00:04:21,560 into the tools within XFS I hope this has been informative for you and I'd like to thank you for viewing.