6/22/2023 0 Comments Typestatus 2 9.3.3![]() In order to convert your volume group to big or scalable, you will need to have enough free PP on each disk of the Volume Group you’re converting. Yes, you have a few choices, but along with the simple technical stuff, comes the complexity of the customer, a production environment and the need to increase that same filesystems. Now let’s consider that the world changes and needs changes…and that now 127Gb is no longer considered a big LUN. LTG size (Dynamic): 256 kilobyte(s) AUTO SYNC: no MAX LVs: 512 FREE PPs: 63 (8064 megabytes) VG PERMISSION: read/write TOTAL PPs: 36744 (4703232 megabytes) VG STATE: active PP SIZE: 128 megabyte(s) Observe that it has a PP Size of 128Mb, the MAX PVs is 128 and the MAX PPs per PV is 1016, which allows me to add LUNs up to lsvg vg_hellpit The taskįirst of all, let’s take a look to the vg_hellpit for some important information. On this article I will show you some of the magics this undocumented command can do for us. It may be time to convert your VG to a Big or Scalable type and get rid of these limits. Now, imagine that you cannot work with the VG factor attribute for playing with the MAX PPs per PV because it would actually decrease the number of disks you can add to the VG. Suppose that you got a VG with several disks, let’s say… 46 LUNs and now you’re in need not only to add more disks but also add larger disks. Now you can fsck or mount your filesystems to change the root password or whatever you want to do. # lvm lvscan | awk ‘Ĭheck your volumes again with lvscan and you should see all of them activated. Note: if you want to perform a batch activation, use: The following command will make the Logical Volume active. ![]() The logical volumes will appear with the status of inactive, don’t panic!! Just in case, check for the logical volumes We can do that by scanning the physical volumes.Īt this point, the Logical Volumes should already be available. To mount the filesystems, first we need to make the system aware of the Volume Groups. Using the CD-ROM, boot the system in single-user mode (RedHat has the “rescue” mode). This post will show briefly, how to have access to the basic OS logical volumes. ![]() On Linux, having the OS filesystems mounted may turn out into a tricky task when LVM is used. Such kind of tasks usually requires that the system is started in some recovery mode in order to have access to the OS filesystems. Some of the usual tasks for a system administrator is to recover crashed systems or root passwords. Then a simple cleanup using slibclean would reduce them dramatically.Ī new attempt to unload iptrace this time worked and in sequence, tcpdump showed the interfaces we were looking for!! Iptrace: 0827-876 Cannot turn off tracing.įetching a list of shared objects loaded into the system would reveal a high number of them. Trying to unload iptrace would result in another error. On my server, even lo0 would not appear on the list. You can notice that the other interfaces are not shown. (also seen as “file exists” on some AIX versions). Tcpdump: BIOCSETIF: en0: Do not specify an existing file. The problem may be some other software or driver holding the network resources. That error message is indeed weird, specially if you are sure that you have one or more interfaces available. I have tried to translate that using Google Translator but the final result was not much clear, so I just borrowed the commands and wrote the text myself.Įventually you may face a situation where an attempt to run tcpdump on your AIX system will result in the following message: These instructions were taken from the URL.
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