similar to: cant mount degraded (it worked in kernel 2.6.38.8)

dd if=/dev/null of=img5 bs=1 seek=2G dd if=/dev/null of=img6 bs=1 seek=2G mkfs.btrfs -d raid1 -m raid1 img5 img6 losetup /dev/loop4 img5 losetup /dev/loop5 img6 btrfs device scan mount -t btrfs /dev/loop4 dir umount dir losetup -d /dev/loop5 mount -t btrfs -o degraded /dev/loop4 dir umount dir losetup -d /dev/loop4 ioctl: LOOP_CLR_FD: Device or resource busy mkfs.ext3 /dev/loop4 mke2fs 1.39

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

Hi, i think i found the reason for the boot failure in the definition of Extended Boot Records. https://en.wikipedia.org/wiki/Extended_boot_record#Values "Starting sector = relative offset between this EBR sector and the first sector of the logical partition. Note: This is often the same value for each EBR on the same hard disk; usually 63 for Windows XP or older." So if

Hi Folks, Let's keep this optimization alive. To summarize: several folks voiced general support, but with questions about why existing optimizations do not already catch this case. Deep dive by Wei Mi showed that the optimization is most likely not a clean-up of LSR sloppiness, but something new. Follow-up by myself confirmed that the redundancy eliminated the LoopExitValues pass exists in

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

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

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

Ok guys I am wondering if anyone can help me out here. I am trying to mount a xen .img file. when I try to do a mount -o loop /xen/guest.img /mnt/tmp I get a message saying that I need to specify a partition type.. What am I missing? Many thanks in advance, CJP _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com

Hello list, Currently, i use a partition image to run my XenU (/dev/hda2) and "fdisk -l" return nothing and can''t open /dev/hda . I want to use a full hard drive image (not partition image) from my Xen0 as hda in my XenU. I want to be able to run fdisk on hda in my XenU to list and regenerate partitions. I tried with this (/img is my hard drive image): disk =

Il 30/01/19 16:49, Simon Matter ha scritto: >> On 01/30/19 03:45, Alessandro Baggi wrote: >>> Il 29/01/19 20:42, mark ha scritto: >>>> Alessandro Baggi wrote: >>>>> Il 29/01/19 18:47, mark ha scritto: >>>>>> Alessandro Baggi wrote: >>>>>>> Il 29/01/19 15:03, mark ha scritto: >>>>>>>

I've got Samba 3.0 running on a linux machine (red hat 9). the server is configured as PDM with five windows xp clients connected to it. all day long, when there'S activity on the server it runs without problems, but during the night always the same error occures and causes a system crash on the server. here the relevant part of the logfile: Aug 3 04:14:12 dhcppc1 nmbd[1666]:

Is there a transformation in LLVM that will perform loop fusion? http://en.wikipedia.org/wiki/Loop_fusion I have the following program, in which I would like the 2 loops (iterating the same number of times) to be merged into 1, after which other nice optimizations such as mem2reg will apply: ; ModuleID = 'test' define void @vector([16 x float]* nocapture %arg, [16 x float]* nocapture

On Apr 23, 2013, at 10:37 AM, Shuxin Yang <shuxin.llvm at gmail.com> wrote: > As far as I can understand of the code, the Reassociate tries to achieve this result by its "ranking" mechanism. > > If it dose not, it is not hard to achieve this result, just restructure the expression in a way such that > the earlier definition of the sub-expression is permute earlier in

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

On 01/30/19 03:45, Alessandro Baggi wrote: > Il 29/01/19 20:42, mark ha scritto: >> Alessandro Baggi wrote: >>> Il 29/01/19 18:47, mark ha scritto: >>>> Alessandro Baggi wrote: >>>>> Il 29/01/19 15:03, mark ha scritto: >>>>> >>>>>> I've no idea what happened, but the box I was working on last week

It's an interesting problem. The best stuff I've seen published is by Cooper, Eckhart, & Kennedy, in PACT '08. Cooper gives a nice intro in one of his lectures: http://www.cs.rice.edu/~keith/512/2012/Lectures/26ReassocII-1up.pdf I can't tell, quickly, what's going on in Reassociate; as usual, the documentation resolutely avoids giving any credit for the ideas. Why is that?

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:/ #

How do I mount a partition that is in an image file? I have a file called centos.img that has 3 partitions in the file. I need to copy data to the third partition on that image file. I have seen things about a loop back device (which is fine) but then it talked about an offset parameter and I dont know what that is or more importantly what number to use. I hope I'm on the right track. How

Guys! Tomorrow in my "live" presentation at Linuxcon Xen Directions! I''ll show the Xen Live CD to the public! To celebrate! I want to share my last procedure to get and run Xen 4.0.1 on Ubuntu 10.04 64 bits, here we go: The procedure: 1- Install all the packages: aptitude update aptitude install bridge-utils build-essential libncurses5-dev dpkg-dev debhelper

Hi, I am investigating a performance degradation between llvm-3.1 and llvm-3.2 (Note: current top-of-tree shows a similar degradation) One issue I see is the following: - 'loop invariant code motion' seems to be depending on the result of the 'reassociate expression' pass: In the samples below I observer the following behavior: Both start with the same expression: %add = add