similar to: Warning: bad fsid on block 20971520

Hello, I have a question regarding "btrfs filesystem df"output. # btrfs fi df /mnt/test Data: total=3.01GB, used=512.19MB System, DUP: total=8.00MB, used=4.00KB System: total=4.00MB, used=0.00 <= What this means? For what is used? I''ve never seen this incremented Metadata, DUP: total=2.50GB, used=676.00KB Metadata: total=8.00MB, used=0.00

A while ago someone on IRC had a directory with no entries but with a non-zero i_size. rmdir fails because i_size isn''t zero but there are no items left to remove and decrease i_size. At the time casual code inspection implied that this would be possible in unlucky error cases. I finally got around to really reading up and reproducing it. diff --git a/fs/btrfs/inode.c

Currently the fs sync function (super.c:btrfs_sync_fs()) doesn''t wait for delayed work to finish before returning success to the caller. This change fixes this, ensuring that there''s no data loss if a power failure happens right after fs sync returns success to the caller and before the next commit happens. Steps to reproduce the data loss issue: $ mkfs.btrfs -f /dev/sdb3 $

When making btrfs filesystem. we firstly write root leaf to specified filed, and then we recow the root. If we don''t recow, some trees are not in the correct block group. Steps to reproduce: dd if=/dev/zero of=test.img bs=1M count=100 mkfs.btrfs -f test.img btrfs-debug-tree test.img extent tree key (EXTENT_TREE ROOT_ITEM 0) leaf 4210688 items 10 free space 3349 generation 4 owner 2

Frank Thommen wrote: > > I would like to use the NFSv4 ability to create a "root" filesystem with > fsid=0, so that I don't have to refer to the whole path of the exported > filesystem when I mount it.? However I do *not* want this root > filesystem to be mountable by any host.? Is that possible and how? > > E.g > Filesystem: > ? /exports/data1 > ?

Hi, I would like to use the NFSv4 ability to create a "root" filesystem with fsid=0, so that I don't have to refer to the whole path of the exported filesystem when I mount it. However I do *not* want this root filesystem to be mountable by any host. Is that possible and how? E.g Filesystem: /exports/data1 /exports/data2 /exports/data3 /etc/exports: /exports

What is the purpose of FSIDs? I am exporting 30 volumes via NFS. Do I need a FSID option? TIA

Hi! I used to have arch linux running on 1 btrfs partition (sda1, incl. /boot). When switching to 3.2.5 recently the system fails to boot: (after udevd) /etc/rc.sysinit: line 15: 117 Bus error mountpoint -q /proc and so on, no idea. It used to boot with 3.2.4, but 1) I obviously had some corruption in the tree, when I tried to delete a certain file I hit e.g. "kernel BUG at

I have accidently damaged the first block(s) of a btrfs partition and can''t mount it anymore. I can see that my data is still intact by running a command like: cat /dev/sda5 | hexdump -C | more Do any (experimental) tools exist which would allow me to recover the files? Thank you -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a

[11558.527680] ------------[ cut here ]------------ [11558.527708] kernel BUG at fs/btrfs/transaction.c:1337! [11558.527730] invalid opcode: 0000 [#1] PREEMPT SMP [11558.527764] CPU 1 [11558.527776] Modules linked in: loop nls_cp437 vfat fat dm_mod xfs exportfs jfs usb_storage uas fuse ext4 jbd2 mbcache snd_hda_codec_hdmi snd_hda_codec_realtek arc4 iwlwifi snd_hda_intel snd_hda_codec uvcvideo

Allocate multi structure only after we know the correct size and do not do unneeded steps when we are only returning length. Signed-off-by: jim owens <jowens@hp.com> --- fs/btrfs/volumes.c | 65 +++++++++++++++++++-------------------------------- 1 files changed, 24 insertions(+), 41 deletions(-) diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 5af76fc..e6599ef 100644 ---

We discussed using the top bits of the chunk type field field to store a number of redundant disks -- so instead of RAID5, RAID6, etc., we end up with a single ''RAID56'' flag, and the amount of redundancy is stored elsewhere. This attempts it, but I hate it and don''t really want to do it. The type field is designed as a bitmask, and _used_ as a bitmask in a number of

the -k option was missing from the usage() output and was present only in the man page synopsis. Say a few more words about it. Signed-off-by: Eric Sandeen <sandeen@redhat.com> --- diff --git a/blktrace.c b/blktrace.c index 89aaaac..4e96573 100644 --- a/blktrace.c +++ b/blktrace.c @@ -450,6 +450,7 @@ static char usage_str[] = "\n\n" \ "[ -p <port number> |

I keep reading that RHEL/CentOS 5 supports blktrace, but I can't seem to find the blktrace/blkparse utilities. Is it that just the functionality is available in the kernel, but the user is left to have to hunt down the latest versions of the utilities on the net? If anybody knows where to get the latest versions of these utilities I would greatly appreciate it. Ross S. W. Walker

Hi, I am using kernel 3.7-rc6. I have written a test application for extended attributes and have for some folders a wired behaviour: #include <stdio.h> #include <string.h> #include <attr/xattr.h> char attrs[1024]; ssize_t attrslen; int i; char value[1024]; ssize_t valuelen; int main(int argc, char *argv[]) { if (argc != 2) { fprintf(stderr, "Syntax: testxattr

In SmallVector.h: class SmallVectorBase { *protected:* void *BeginX, *EndX, *CapacityX; *protected:* SmallVectorBase(void *FirstEl, size_t Size) : BeginX(FirstEl), EndX(FirstEl), CapacityX((char*)FirstEl+Size) {} In StringMap.h: class StringMapImpl { *protected:* // Array of NumBuckets pointers to entries, null pointers are holes. // TheTable[NumBuckets] contains a sentinel value

Hello Developers, it seems that i discovered a bug in btrfs while testing it on a zSeries mainframe :-) ## Test environment: - IBM System z900 Mainframe - Debian SID with 64 Bit Kernel - GIT Sources from git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable.git - System runs as z/VM guest - 3 Virtual CPUs - 1 GB RAM Storage ## Initial Test Setup - Setup a Debian SID System with

On 4/15/20 11:16 AM, Richard W.M. Jones wrote: > Can be used for building up lists of things, especially > lists of strings. > --- > common/include/Makefile.am | 6 +++ > common/include/test-vector.c | 90 +++++++++++++++++++++++++++++++++ > common/include/vector.h | 96 ++++++++++++++++++++++++++++++++++++ > .gitignore | 1 + > 4 files

Ok, I got blktrace installed, but I also have some blktrace system taps that I want to test out, but it seems I need to have the kernel debug info installed to get systemtap working. Anyone know where the CentOS kernel-debuginfo RPMs are located? Ross S. W. Walker Information Systems Manager Medallion Financial, Corp. 437 Madison Avenue 38th Floor New York, NY 10022 Tel: (212) 328-2165 Fax:

Hi, Thanks to everyone involved in the Xen project. I think it is great and can''t wait to get my hands dirty with it. In the meantime, I cannot boot Dom0 on an ibm x335 and I am not sure what the problem is. Any insights are welcome. Here is what my grub.conf file looks like: title Fedora Core (2.6.8-1.521) root (hd0,0) kernel /vmlinuz-2.6.8-1.521 ro root=/dev/sda9