similar to: LVM Snapshots -broken ? Ever worked ?

I've recently begun to try out LVM snapshots and I have 2 things I'm wondering about My intention is to run backups off the snapshot. As a first iteration, I left 15% of the disk for the snapshot LV. 1. The HOWTO instructions suggest that the snapshot is in effect as long as the snapshot LV exists, and use lvremove to disable the snapshot. Is this the proper way? 2. I chose 15%

Hi... I have had a problem when I am going to detach one specific LVM partitions of Xen, so I have been trying xm destroy <domain>, lvchange -an <lvm_partition>, lvremove -f.... So I haven''t had sucess. I restarted the server with init 1 yet and nothing... I have seem two specific process started xenwatch and xenbus, but I am not sure if this processes have some action over

I noticed that the changelog for the new kernel 2.6.9-34 on the redhat enterprise watchlist states on of the fixes as; 145061 - SMART support in SATA driver (P1) Does this mean that with that kernel we should be able to interrogate SATA drives now ? Cheers, Bards.

Hello guys Does anyone use lvm2 backends for domU storages ? I do and I wanted to use lvm''s snapshot feature to make backups of domUs in background but I got the following problem. When I create a snapshot LV and copy data from it to backup storage it works perfect. Then I do umount and then lvremove. lvremove asks me if I really want to remove the volume and then just hangs forever.

On 06.07.2017 15:35, Robert Nichols wrote: > On 07/06/2017 04:43 AM, Volker wrote: >> Hi all, >> >> one of my lv has become completely unaccessible. Every read access >> results in a buffer io error: >> >> Buffer I/O error on dev dm-13, logical block 0, async page read >> >> this goes for every block in the lv. A ddrescue failed on every single

I am not sure if it''s a xen bug or lvm bug, or just my bad hardware, but here''s how to reproduce: /dev/vg0/centos1 is lvm block used by a domainU, it''s 8G in size. #lvcreate -L8192M -s -n snap1 vg0 #mount /dev/vg0/snap1 /mnt do some copying files here #umount /mnt #lvremove /dev/vg0/snap1 not removed! it says can''t allocated memory #xm mem-set 0 512 #lvremove

I'm having some difficulty finding a method to shrink my /home to expand my /.? They both correspond to LVMs.? It is my understanding that one cannot shrink a xfs filesystem.? One must back it up (xfsdump), remove (lvremove) redefine it and then restore it back (xfsrestore). Okay, I'm running into a problem where /home? needs to be "unused".? If tried going in to

At the beginning of January I encountered a problem where several vm guests on a single host somehow managed to see the the virtual disks assigned to other guests on the same hosts. I was unable to resolve this situation and shutdown the affected guests after creating new guest instances and moving the services and data off the corrupted guests. I have since removed these guests via virt-manager

At the beginning of January I encountered a problem where several vm guests on a single host somehow managed to see the the virtual disks assigned to other guests on the same hosts. I was unable to resolve this situation and shutdown the affected guests after creating new guest instances and moving the services and data off the corrupted guests. I have since removed these guests via virt-manager

Just discovered that on CentOS 4.1 when you issue the command: lvcreate -s -n temp -L2G /dev/vgname/lvname to create a snapshot, you get the error message: snapshot: Required device-mapper target(s) not detected in your kernel I've checked and recheck my spelling and tried using the device created under /dev/mapper. I've tried it on both x86_64 and on i386. Works as expected under

Hi, I'd like to know what would be the best way to remove an iscsi lvm storage from a server. (removing all reference to that storage etc.) The storage in question will be reset and reformated and used on a different server; so no LVM export is needed. Do I have to do lvremove ..., vgremove ..., pvremove ... and do an iscsiadm -m node -T ... -p ... -u and iscsiadm -m node -o delete -T ...

Hello, I was wondering what is the smallest install that anyone has managed with 4 (4.2 to be precise) ? I'm looking at a machine running as a VPN in a DMZ, so I'm going to remove/NOT INSTALL things like gcc, X, etc. I'm planning on putting this on a 1gb USB stick and booting from it. That reminds me, was there going to be a 1 CD server install image ? The other thing I noticed is

Yeah, I tried that but ran into a problem.? It came up fine in single-user/maintenance mode. ? The mount command shows all of the mounted file systems, but after I 'chroot /sysroot', the mount failed (with some problem with mtab, sorry don't have the exact error message).? So I couldn't mount my 32TB RAID (where the xfsdump file was). On 5/13/2020 12:48 AM, Simon Matter via

I have a Centos 7 install using EXT4 on LVM. Its running as a VM inside KVM. Issue I have run into is that fstrim does not work due to the LVM. Without fstrim snapshots have gotten huge. Is there a way convert it from LVM to non-LVM without a complete reinstall?

hi, I use the libvirt-python to manage my virtual machine. When I delete a volume use vol.delete(0), sometimes it note me that has occur the error: libvirtError: internal error '/sbin/lvremove -f /dev/vg.vmms/lvm-v097222.sqa.cm4' exited with non-zero status 5 and signal 0: Can't remove open logical volume

I'll try that...I was using instructions I found on the internet for single-user/maintenance mode.?? From the grub screen you enter 'e' and modify the linux16 line...etc. Okay, I'll try that next. Thanks Simon! On 5/13/2020 7:28 AM, Simon Matter via CentOS wrote: > Hi, > >> Yeah, I tried that but ran into a problem.? It came up fine in >>

Has anyone gotten this to work ? I can define a raid device but cant put a VG on it. I then tried 'autopartition' and it created an 'LVM' of sorts, when I tried to edit it I wasnt able to as a message appeared saying, LVM editing was not allowed in text mode. Any help ? Cheers, Brian. PS - PIII-500mhz 128mb RAM, 4mb AGP.

I am investigating the procedure to follow when moving a KVM guest instance from one host to another where the guest uses LVM as its storage. As a preliminary cut I have cobbled the following together from various sources located through Google searches: 1. Log in to vmhost_old 2. Shutdown guest 3. Create an LVM snapshot of the guest volume 3.a. lvcreate -s -L 300m -n LVM_guest_snapshot

Robert Heller wrote: > At Thu, 25 Jun 2015 11:03:18 -0400 CentOS mailing list <centos at centos.org> > wrote: >> On Wed, June 24, 2015 16:11, Chuck Campbell wrote: >> > >> > Is there an easy to follow "howto" for normal LVM administration >> > tasks. I get tired of googling every-time I have to do something >> > I don't remember

Hello all, I'm looking at setting up a sort of 'appliance' server and as such its really not going to have a lot packages etc. I thought of installing 4.2 on a 1gb USB stick, however, the stick is not even recongnized by anaconda. It did appear when I did 'modprobe usb-storage.ko' as /dev/sdc (i have already have 2 SATA disks which are sda, sdb). Then the disk partitioner