similar to: question on mounting a partition that is in a disk image

Hi! I recently tried to mount a filesystem in RAID1 mode using loopback devices. I followed the instructions at [1]. Here''s exactly what I''ve done: $ dd if=/dev/zero of=raid1_0.img bs=1M count=500 $ dd if=/dev/zero of=raid1_1.img bs=1M count=500 $ mkfs.btrfs -m raid1 -d raid1 raid1_0.img raid1_1.img $ losetup /dev/loop0 raid1_0.img $ losetup /dev/loop1 raid1_1.img $ mount -t

Hi, I wanted to create a new btrfs fs for my backups. When trying to mkfs.btrfs for that device, I''m getting "error checking /dev/loop2 mount status" With strace I see where the problem is: lstat("/dev/disk/by-id/ata-INTEL_SSDSA2M160G2GC_CVPO939201JX160AGN-par", 0x7fffa30b3cf0) = -1 ENOENT (No such file or directory) The problem is there is something missing

Continuing on with my earlier post . . . after looking through code of JBD, is the following perhaps the difference in why the md5 values differ; When a journalled filesystem that uses jbd is mounted the journal b_count is incremented by one? *EVEN* if the volume was mounted read only, this b_count is still increased by one? curious as ever! lt __________________________________ Do you

Is there something special about filesystems mounted via the loop device, which prevents Samba from sharing them? I have a small LAN with several PCs on it. It has a few Windows machines, and a Linux machine running Mandrake 10 (kernel 2.6.3), which shares out its root ("/") read-only as "c". (Temporarily, for testing, it is shared with full write permissions, which I know

Hi all, One of our Dell servers has failed badly, and one of the domU's has been corrupted in the process. It boots up to a point and then gives me a kernel panic: Loading dm-zero.ko module Loading dm-snapshot.ko module Scanning and configuring dmraid supported devices Scanning logical volumes Reading all physical volumes. This may take a while... No volume groups found Activating

I would like to pick the brains of the ZFS experts on this list: What would you do next to try and recover this zfs pool? I have a ZFS RAIDZ1 pool named bank0 that I cannot import. It was composed of 4 1.5 TiB disks. One disk is totally dead. Another had SMART errors, but using GNU ddrescue I was able to copy all the data off successfully. I have copied all 3 remaining disks as images using

# uname -a Linux dhcppc1 3.0.1-xxxx-std-ipv6-64 #1 SMP Sun Aug 14 17:06:21 CEST 2011 x86_64 x86_64 x86_64 GNU/Linux mkdir test5 cd test5 dd if=/dev/null of=img5 bs=1 seek=2G dd if=/dev/null of=img6 bs=1 seek=2G losetup /dev/loop2 img5 losetup /dev/loop3 img6 mkfs.btrfs -d raid1 -m raid1 /dev/loop2 /dev/loop3 btrfs device scan btrfs filesystem show Label: none uuid:

On Mon, Sep 21, 2015 at 11:13 AM, Wei Mi <wmi at google.com> wrote: > I have the same worry as Philip and Hal that the new LoopExitValues > pass may increase some live range significantly in certain cases > because it reuses value cross outerloop iterations. Like the following > hypothetical case, the value reuse will create a live range living > across loop2, loop3, .... But

Hola lista, tengo una base de datos muy grande de un datalogger. Consiste en un vector con 0's y 1's, y tengo que ver cuando hay 600 o más unos seguidos. Se me ocurrió hacerlo con un loop for. Pero tarda demasiado. También intente usar which para que seleccione solo los 1 para empezar a sumar pero no hay gran diferencia. A alguien se le ocurre alguna solución para hacerlo más rápido? Acá

Hi, This left me puzzled for a while: 22:29 borg:/ # losetup /dev/loop1 /.B.disk 22:29 borg:/ # mount /dev/loop1 /B mount: /dev/loop1: can''t read superblock 22:29 borg:/ # blkid /dev/loop1 /dev/loop1: UUID="e19fe89b-cde3-4ccc-bc70-b759a57bd1c9" UUID_SUB="f29c6218-d040-4546-a227-4dd2d2142817" TYPE="btrfs" 22:29 borg:/ # losetup -d /dev/loop1 22:29 borg:/ #

Hi, I want to rename some volume groups and logical volumes. I was not surprised when it would not let me rename active volumes. So I booted up the system using the CentOS 5.5 LiveCD, but the LiveCD makes the logical volumes browsable using Nautilus, so they are still active and I can't rename them. Tried: /usr/sbin/lvchange -a n VolGroup00/LogVol00 but it still says: LV

I have a Fedora Core server running: Fedora Core release 4 (Stentz) kernel version: 2.6.15-1.1833_FC4smp ( I have also tried kernel version: 2.6.16-1.2108_FC4smp) I compiled the ocfs2 and ocfs2-tools using the following steps: # MODULES: tar zxvpf ocfs2-1.2.1.tar.gz cd ocfs2-1.2.1 ./configure make make install # TOOLS: tar zxf ocfs2-tools-1.2.1.tar.gz cd ocfs2-tools-1.2.1 ./configure

Hallo, linux-btrfs, First I create an array of 2 disks with mkfs.btrfs -d raid0 -m raid1 /dev/sdb1 /dev/sdd1 and mount it at /srv/MM. Then I fill it with about 1,6 TByte. And then I add /dev/sde1 via btrfs device add /dev/sde1 /srv/MM btrfs filesystem balance /srv/MM (it run about 20 hours) Then I work on it, copy some new files, delete some old files - all works well. Only df

Hi, I have a need to install 2.6.18 kernel. After I configure, make, make modules, make install (all that is good). The last thing I do is 'make install'. This also modifies grub.conf and adds an entry for my new kernel. However it leaves the old kernel as still the default. Is there a way to have it automatically set my new kernel as the default in grub.conf so when I reboot the new

Hi, I want to increase my harddisk space and receive the following error # lvextend -l +323 /dev/VolGroup00/LogVol00 Extending logical volume LogVol00 to 48.97 GB device-mapper: reload ioctl failed: Invalid argument Failed to suspend LogVol00 Can you help me please? # fdisk -l Disk /dev/hda: 54.7 GB, 54759997440 bytes 255 heads, 63 sectors/track, 6657 cylinders Units =

Hi, I have a same question posted by punamia , when I am trying to create domain using xen-2.0 built on Fedora 2/ Pentium PC with IDE drive: "Kernel panic: No init found. Try passing init= option to kernel". Below is console dump. Any suggestions ? Thanks Console Dump: Linux version 2.6.8.1-xenU (root@localhost.localdomain) (gcc version 3.3.3 20040412 (Red Hat Linux

Hello..I am not very proficient in Linux kernel stuffs although I know my basics. I have a question and all suggestions/solutions will be highly appreciated... I got to know that RHEL 5 has inbuilt Xen Support...So I tried to install a RHEL 5.0 Server on my P4 machine. On top of it I tried to install Xen specific RPMs and some other RPMs needed by Xen. The additinal RPMs added after base

I have a degraded raid array (originally raid-10, now only two drives) that contains an LVM volume. I can see in the appended text that the Xen domains are there but I don't see how to mount them. No doubt this is just ignorance on my part but I wonder if anyone would care to direct me? I want to be able to retrieve dom-0 and one of the dom-Us to do data recovery, the others are of

Could someone tell me what could be causing this failure on my system and a way to get around/fix it? Your help is very much appreciated. I'd just finished running lvm lvextend. "lvextend -L+L1G /dev/VolGroup00/LogVol00", after adding a new 1G partition (/dev/sda4) to /dev/VolGroup00. [root at ppstest13 ~]# ext2online -d -v /dev/VolGroup00/LogVol00 ext2online v1.1.18 -

I have been trying very hard to seek help with my very complex issue but so far none have been successful. So I would like to try this mailing list, maybe there are some experts who know what they're talking about. Please refer to my experts-exchange question, all the required information will be there. It is more practical to send you to the webpage than paste out what I've done.