search for: subvol

Hi, I will send a series patches that add snapshot/subvol deletion soon. But the way to delete snapshot/subvol is far from people''s expectancy. To delete a snapshot/subvol, we need four steps: 1) snapshot/subvol deletion ioctl or rmdir; 2) umount; 3) btrfsck; 4) mount the fs. The reason for this is bug in root back & forward references. In s...

...740bd..55a1495 100644 --- a/extlinux/main.c +++ b/extlinux/main.c @@ -580,6 +580,7 @@ int ext2_fat_install_file(const char *path, int devfd, struct stat *rst) goto bail; } + close(fd); free(file); free(oldfile); free(c32file); @@ -778,7 +779,7 @@ static char * get_default_subvol(char * rootdir, char * subvol) struct btrfs_ioctl_search_key *sk = &args.key; struct btrfs_ioctl_search_header *sh; int ret, i; - int fd; + int fd = -1; struct btrfs_root_ref *ref; struct btrfs_dir_item *dir_item; unsigned long off = 0; @@ -797,6 +798,8 @@ st...

I've just tried putting usr in a subvol. Installation proceeds normally, no errors, but I'm dropped to a dracut prompt which indicates mount of /usr failed. dmesg follows: [ 14.025215] systemd[1]: Starting dracut initqueue hook... [ 14.077890] Btrfs loaded [ 14.129987] device label fedora_f18v devid 1 transid 31 /dev/sda1 [...

From: anand jain <anand.jain@oracle.com> Anand Jain (1): [RFC] Add btrfs autosnap feature Makefile | 6 +- autosnap.c | 1553 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ autosnap.h | 81 +++ btrfs-list.c | 140 +++++- btrfs.c | 46 ++- btrfs_cmds.c | 186 +++++++- btrfs_cmds.h | 3 +- scrub.c | 1 + 8 files changed, 1982 insertions(+), 34

Is btrfs subvol support failing just for me? Looks like nothing adds the required '@/' string. virt-ls uses the first variant of the command: ><rescue> mount -vo subvol=var/spool,ro /dev/sda2 /sysroot/ [ 113.852047] BTRFS info (device sda2): disk space caching is enabled [ 113.852869] BTRFS: ha...

...11/20/6588643/thread and to read a my blog about this argument http://kreijack.blogspot.com/2010/01/linux-btrfs-example-of-layout.html Regards Goffredo >----Messaggio originale---- >Da: anthony@extof.me >Data: 19/05/2010 8.50 >A: <linux-btrfs@vger.kernel.org> >Ogg: default subvolume abilities/restrictions > >hi, > >i''m working on an initrd hook >[http://aur.archlinux.org/packages.php?ID=33376] to support >non-volatile system rollbacks (promoting a temporary rollback snapshot >to the new active/default). when the system is installed to the >...

Hi all, Just a quick question but can''t find an obvious answer. Can I create/convert a existing (btrfs) directory into a subvolume? It would be very helpful when transferring ''partitions'' into btrfs. I found a similar question way back in google, but that site is down now generally. Thanks in advance. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of...

The code to parse btrfs subvol entries in /etc/fstab failed if the entry had more than one comma-separated option, for example: /dev/sda4 /home btrfs rw,user,subvol=foo 0 0 This commit fixes that code to use Augeas correctly. Fixes commit 7ba0e10501f23358c38939930d613bf2393d744d. Reported by: Zhongfu Li https://bugs.launchpa...

>From 03115f064be2e074d84f4e2105d2cdebde10f6ba Mon Sep 17 00:00:00 2001 From: Yi Yang <yi.y.yang at intel.com> Date: Tue, 12 Jul 2011 14:53:50 +0800 Subject: [PATCH] Use a general way to get the default subvolume for btrfs --- extlinux/btrfs.h | 105 +++++++++++++++++++ extlinux/main.c | 304 ++++++++++++++++++++++++++++++++++++++++++++++++------ 2 files changed, 377 insertions(+), 32 deletions(-) diff --git a/extlinux/btrfs.h b/extlinux/btrfs.h index 39a861a..be0c24e 100644 --- a/extlinux/btrfs.h...

Right now inode cache inode is treated as the same as space cache inode, ie. keep inode in memory till putting super. But this leads to an awkward situation. If we''re going to delete a snapshot/subvolume, btrfs will not actually delete it and return free space, but will add it to dead roots list until the last inode on this snap/subvol being destroyed. Then we''ll fetch deleted roots and cleanup them via cleaner thread. So here is the problem, if we enable inode cache option, each snap/...

On Fri, Oct 10, 2014 at 01:47:01PM +0200, Olaf Hering wrote: > > Is btrfs subvol support failing just for me? Looks like nothing adds the > required '@/' string. virt-ls uses the first variant of the command: > > ><rescue> mount -vo subvol=var/spool,ro /dev/sda2 /sysroot/ > [ 113.852047] BTRFS info (device sda2): disk space caching is enabled >...

I'm experimenting with btrfs-send. Previously (2014-09-26), I did my first btrfs-send on a subvol, and that worked fine. Today, I tried to send a new snapshot. Unfortunately, I realized part way through that I forgot to specify the parent to only send a delta, and killed the send with ^C. On the destination, I'm left with: ~$ sudo btrfs subvol list /var/media/backups/venus/home/ ID 2820 g...

This testscript creates reflinks to files on different subvolumes, overwrites the original files and reflinks, and moves reflinked files between subvolumes. Originally submitted as testcase 302, changes are made based on comments from Eric: http://oss.sgi.com/archives/xfs/2013-03/msg00231.html Two new common/rc functions used in this script (_require_cp_r...

...740bd..bc7ded3 100644 --- a/extlinux/main.c +++ b/extlinux/main.c @@ -580,6 +580,7 @@ int ext2_fat_install_file(const char *path, int devfd, struct stat *rst) goto bail; } + close(fd); free(file); free(oldfile); free(c32file); @@ -797,6 +798,8 @@ static char * get_default_subvol(char * rootdir, char * subvol) } if (ret <= 0) { subvol[0] = '\0'; + if (fd >= 0) + close(fd); return NULL; } @@ -831,6 +834,8 @@ static char * get_default_subvol(char * rootdir, char * subvol) if (ret < 0) {...

This gives EXDEV for clone operations that btrfs could otherwise execute and with slight change of circumstances will actually execute fine. Imagine we have a btrfs on /dev/mapper/foobar with subvols /foo and /bar. Let’s also imagine top of said fs in mounted at /mnt. In this case, a cross-subvol clone of /mnt/foo/srcfile to /mnt/bar/dstfile will succeed. However, if only the individual subvols were mounted like this: /dev/mapper/foobar on /mnt (subvol=foo) /dev/mapper/foobar on /mnt2 (s...

Hi Chris, This is the extent of my current queue of Btrfs snapshot/subvol/commit stuff. Most of these were posted several months ago. Can be sent upstream during this merge window? Not having this functionality is becoming a bit of a roadblock for our efforts to keep the Ceph data in a consistent state. These patches are also available from git://git.kernel.org/...

We create two subvolumes (meego_root and meego_home) in btrfs root directory. And set meego_root as default mount subvolume. After we remount btrfs, meego_root is mounted to top directory by default. Then when we try to mount meego_home (subvol=meego_home) to a subdirectory, it failed. The problem is when default mount...

Hello Hendrik Can you help input 2 commands 'mount' and 'df -TPh' on OMV, and post the output to us, thank you. -- Regards, Jones Syue | ??? QNAP Systems, Inc.

Cédric pointed out this problem we have: $ guestmount -a /var/lib/libvirt/images/sles12sp1-pv.img -m '/dev/sda1:/:subvol=.snapshots/2/snapshot:btrfs' /mnt libguestfs: error: mount_vfs: /dev/sda1 on / (options: 'subvol=.snapshots/2/snapshot'): mount: mount(2) failed: No such file or directory guestmount: '/dev/sda1' could not be mounted. guestmount: Check mount(8) man page to ensure options 'su...

...e fuse clients log the following messages for every directory access: [2012-03-08 10:53:56.953030] I [dht-common.c:524:dht_revalidate_cbk] 1-bfd-dht: mismatching layouts for /linux-3.2.9/tools/power/cpupower/bench [2012-03-08 10:53:56.953065] I [dht-layout.c:682:dht_layout_dir_mismatch] 1-bfd-dht: subvol: bfd-replicate-2; inode layout - 0 - 0; disk layout - 2863311530 - 4294967295 [2012-03-08 10:53:56.953080] I [dht-common.c:524:dht_revalidate_cbk] 1-bfd-dht: mismatching layouts for /linux-3.2.9/tools/power/cpupower/bench [2012-03-08 10:53:56.953218] I [dht-layout.c:682:dht_layout_dir_mismatch] 1-b...