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On Sun, Feb 21, 2010 at 8:40 AM, Goffredo Baroncelli <kreijack@gmail.com> wrote: >       filesystem resize [+/-]<size>[gkm]|max <filesystem> -filesystem resize [+/-]<size>[gkm]|max <filesystem> +filesystem resize [+/-]<size>[gkm]|max <dev> This command works on devices, not paths. >              Resize a filesyst...

Hello all, in IRC we had a discussion on how we could solve sending live subvolumes and how to send subvolumes without the need to administrate/keep old snapshots for incremental sends. One of the ideas was to introduce "sendshots", which are basically snapshots where no refs are counted for file data. This means, that when file data is changed in the sendshot origin, we do not consume

Hello, This is the second attempt to bring in cross subvolume reflinks into btrfs. The first attempt was NAKed due to missing vfs mount checks and a clear description of what btrfs subvolumes are and probably also why cross subvolume reflinks are ok in the case of btrfs. This version of the patch comes from David and is in SUSE kernels since a long time, so it is tested and working. The patch

Hello, Sorry if this question is a FAQ, but I don't find it anywere. Does klibc support dynamic linking ? TIA -- gpg key@ keyserver.linux.it: Goffredo Baroncelli (ghigo) <kreijack@inwind.it> Key fingerprint = CE3C 7E01 6782 30A3 5B87 87C0 BB86 505C 6B2A CFF9

Hi Li, >----Messaggio originale---- >Da: lizf@cn.fujitsu.com >Data: 30/11/2010 8.03 >A: <kreijack@libero.it> >Cc: <linux-btrfs@vger.kernel.org> >Ogg: Re: [PATCH 5/5] btrfs: Add ioctl to set snapshot readonly/writable > >Goffredo Baroncelli wrote: >> Hi Li, >> >> On Monday, 29 November, 2010, Li Zefan wrote: >>> This allows us to set a snapshot re...

Hi Anthony, I think that for you may be interested to read this thread http://kerneltrap.org/mailarchive/linux-btrfs/2009/11/20/6588643/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 a...

...data/libeatmydata.so aptitude ) echo "Syncing..." sync sleep 5s sync echo "Remove $ROLLBACK" btrfs subvolume delete "$ROLLBACK" ------------------------------------------------------------ -- gpg key@ keyserver.linux.it: Goffredo Baroncelli (ghigo) <kreijack@inwind.it> Key fingerprint = 4769 7E51 5293 D36C 814E C054 BF04 F161 3DC5 0512

...fsctl.8.in > btrfsctl.8.gz diff --git a/man/btrfs.8.in b/man/btrfs.8.in new file mode 100644 index 0000000..31d3850 --- /dev/null +++ b/man/btrfs.8.in @@ -0,0 +1,122 @@ +.TH BTRFS 8 "" "btrfs" "btrfs" +.\" +.\" Man page written by Goffredo Baroncelli <kreijack@inwind.it> (Feb 2010) +.\" +.SH NAME +btrfs \- control a btrfs filesystem +.SH SYNOPSIS +\fBbtrfs\fP \fB snapshot|\-s \fP\fI <source> [<dest>/]<name>\fP +.PP +\fBbtrfs\fP \fB delete|\-D \fP\fI <subvolume>\fP +.PP +\fBbtrfs\fP \fB subvolume|\-c \fP\fI [<dest>/]&...

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

Hi All, the following patches implement the recursively snapshotting and deleting of a subvolume. To snapshot recursively you must pass the -R switch: # btrfs subvolume create sub1 Create subvolume ''./sub1'' # btrfs subvolume create sub1/sub2 Create subvolume ''sub1/sub2'' # btrfs subvolume snapshot -R sub1 sub1-snap Create a snapshot of

Hi Seto, please could you update also the man page too ? Why it was not provided a way to clear a *single* flag ? To me it seems a bit too long to clear all the flag (btrfs mount-option clear) and then set the right one. As user interface I suggest something like chmod: btrfs mount-option set +ssd,skip_balance -nodatacow /dev/sdX or btrfs mount-option set =ssd,skip_balance,nodatacow

Hello, all. I work with lvm ( kernel 2.4.17 + ext3-2.4-0.9.17-2418p3 patch ) but i can't snapshot a ext3 fs directly # lvcreate --snap --name snap --size +1G /dev/vgtest/lvtest # mount -o ro -t ext3 /dev/vgtest/lvtest /snap /mnt/snap ext3 can't work , ext2 work If I mount readonly the etx3 filesystem, snapshot-it, and remount rw the filesystem ( and ro the snapshot ) it work

Hi, I am compiling a tiny linux kernel 2.6.10 to be used together with linuxbios. The boot phase will go as follows: linuxbios->tiny linux kernel->initramfs The initramfs shall use dhcp to get it's address and then tftp a full featured kernel. This kernel must be started through kexec. I use a tweaked networkdriver in the kernel and cannot use a normal PXE boot. Which files should I

...$(OBJS) .*.d *.g The problema was an unmatched tab between the '#define' and the 'ARITH_xxxx' macro. But I don't know if the syntax [:space:] is supported on all system where the klib should compile. Goffredo -- gpg key@ keyserver.linux.it: Goffredo Baroncelli (ghigo) <kreijack@inwind.it> Key fingerprint = CE3C 7E01 6782 30A3 5B87 87C0 BB86 505C 6B2A CFF9

...alue is used. $ cat /proc/mounts rootfs / rootfs rw 0 0 [...] /dev/sdc /tmp/t4 btrfs rw,relatime,metadata_ratio=20 0 0 /dev/sdc /mnt/btrfs btrfs rw,relatime,degraded,metadata_ratio=20,subvol=snap- of-root 0 0 BR G.Baroncelli commit 3d7ea7bbd70a66c4d0f369b2879c503b722e8834 Author: ghigo <ghigo@kreijack.homelinux.net> Date: Thu Jan 14 20:27:41 2010 +0100 Add info about metadata_ratio and subvolume name diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 3f9b457..faeaa7f 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -461,6 +461,16 @@ static int btrfs_show_options(struct seq_...

Currently the resize command is under filesystem, and takes a path to the mounted filesystem. This seems wrong to me. Shouldn''t it be under device, and take a path to a device to resize? Otherwise, how can a resize operation when you have multiple devices make any sense? -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to

The following series implement a way to generate the help messages and the btrfs man page from the sources comments for the "btrfs" commanda . The syntax and the detailed help of every subcommand are stored in the comments before the function which implements the subcommand. The fact that the help messages and the man page are generated from the same source should help to avoid

Hi Thomas, >----Messaggio originale---- >Da: thomas@kupper.org >Data: 22/01/2010 10.48 >A: "Leszek Ciesielski"<skolima@gmail.com> >Cc: "linux-btrfs"<linux-btrfs@vger.kernel.org> >Ogg: Re: mount command not honoring rootflags passed > > >On 22 Jan 2010, at 10:40, Leszek Ciesielski wrote: > >> On Fri, Jan 22, 2010 at 10:30 AM,

Fedora provides yum-fs-snapshot. If installed, on each package installation or update a snapshot of all btrfs filesystems is taken, so it is possible to revert the installation/update. Suppose an update failed and I want to get back: with # btrfs subvolume set-default yum-snapshot-whatever / I define which snapshot to use at the next boot. After rebooting I decide I really want to stay with

Add a mount option user_subvol_rm_allowed that allows users to delete a (potentially non-empty!) subvol when they would otherwise we allowed to do an rmdir(2). We duplicate the may_delete() checks from the core VFS code to implement identical security checks (minus the directory size check). Signed-off-by: Sage Weil <sage@newdream.net> --- fs/btrfs/ctree.h | 1 + fs/btrfs/ioctl.c |