Re: obscure out of space, df and fi df are way off

2013-01-12 Thread Chris Murphy
a gb of full. Both are good rules of thumb. Thanks. Chris Murphy -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: kernel call trace when deleting a huge file (which used all the space) with btrfs

2013-01-14 Thread Chris Murphy
shows. Is this reproducible with either kernel-3.7.2-201.fc18 or kernel-3.8.0-0.rc3.git0.1.fc19? Both are in koji. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http

Re: RAID 0 across SSD and HDD

2013-01-30 Thread Chris Murphy
starts allocating more chunks to the device(s) that have space. This means there's a distinction in behavior between md's level 'raid10' and separately creating a stripe of mirrors, i.e. first creating raid1 arrays, then striping them with raid0. Chris Murphy-- To unsubscribe from this list: send

Re: Poor performance of btrfs. Suspected unidentified btrfs housekeeping process which writes a lot

2013-01-30 Thread Chris Murphy
-1 is the same size as the LV? You say the btrfs volume on LV is on dm-1 which means they're all the same size, obviating the need for LVM in this case entirely. Chris Murphy -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord

Re: Poor performance of btrfs. Suspected unidentified btrfs housekeeping process which writes a lot

2013-01-30 Thread Chris Murphy
sooner than you'd otherwise expect. When this problem is happening, with the low bandwidth writing, can you hear disk chatter? On all of the drives at the same time or just one or two at a time? Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body

Re: [RFC] Move btrfsck in to the btrfs command

2013-01-30 Thread Chris Murphy
On Jan 30, 2013, at 9:10 PM, Roman Mamedov r...@romanrm.ru wrote: How about btrfs check? For that matter, separate out check and repair. Is there a potential for a btrfsck repair to make things worse? And if so, could this be determined with a check? Chris Murphy-- To unsubscribe from

Re: Poor performance of btrfs. Suspected unidentified btrfs housekeeping process which writes a lot

2013-01-31 Thread Chris Murphy
see why striping is considered fragmentation. To change the profile for the volume, you use -dconvert and/or -mconvert with a rebalance operation. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More

Re: /home on BTRFS on SSD, now highly fragmenting virtuoso database - use autodefrag?

2013-01-31 Thread Chris Murphy
that this is non-rotating media, it should have mounted it with the ssd option. The other mount option possible, which is manually set (and unsets ssd) is ssd_spread. https://btrfs.wiki.kernel.org/index.php/FAQ#What_is_the_difference_between_mount_-o_ssd_and_mount_-o_ssd_spread.3F Chris Murphy

Re: Poor performance of btrfs. Suspected unidentified btrfs housekeeping process which writes a lot

2013-01-31 Thread Chris Murphy
is to not partition your devices at all if you're concerned about efficiency. Just use the whole drive as the device. Chris Murphy -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org

Re: Rebalancing RAID1

2013-02-12 Thread Chris Murphy
at the moment. But it could be other things too. What kernel version? Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: Rebalancing RAID1

2013-02-13 Thread Chris Murphy
from the kernel. As this is hdi, I'm wondering how many drives are connected, and if this could be power induced rather than just cable induced. Once that's solved, you should do a scrub, rather than a rebalance. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux

Re: [PATCH] xfs_mkfs: wipe old signatures from the device

2013-02-13 Thread Chris Murphy
that mkfs.xfs doesn't nerf a file system without the use of -f; even an existing XFS file system. Considering most data loss is user induced, I'd appreciate it if other file systems's tools weren't so easily made belligerent by (hopefully temporarily) confused apes wearing pants. Chris Murphy

Re: Rebalancing RAID1

2013-02-14 Thread Chris Murphy
in dmesg. Also, is a virtual machine being used in any of this, either as host or guest? Chris Murphy -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: Rebalancing RAID1

2013-02-14 Thread Chris Murphy
. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: Rebalancing RAID1

2013-02-14 Thread Chris Murphy
of the md write-intent bitmap, reducing the time to catch the drive up, avoiding a full scrub? Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: Rebalancing RAID1

2013-02-14 Thread Chris Murphy
on how btrfs should behave in such a case. md would have tossed the drive and as far as I know doesn't automatically readd it if it reappears as either the same or a different block device. And when the user uses --re-add there's a resync. Chris Murphy-- To unsubscribe from this list: send

Re: Fixing mount points

2013-02-18 Thread Chris Murphy
different disk, the first partition is btrfs, mounted as /home. So long as the contents are user folders, i.e. the same thing found in sde2 subvol @home, then it's functionally the same as what you had before. Also, btrfs doesn't need fs_passno set. Chris Murphy-- To unsubscribe from this list

Re: btrfs bug reports?

2013-03-14 Thread Chris Murphy
! kernel 3.0.0 is positively ancient in btrfs terms. I defer to others on what kernel should be used at the present time for an Ubuntu server, but I know they have much newer kernels than 3.0.0 available. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs

Re: Impossible or Possible to Securely Erase File on Btrfs?

2013-03-18 Thread Chris Murphy
for the OP's use case is encryptfs which encrypts above btrfs. The file contents are encrypted, but the file names and file system itself (and metadata) are not. In this case, deletion is functionally equivalent to having filled the blocks with random data (short of the DEK escaping into the wild). Chris

Re: Impossible or Possible to Securely Erase File on Btrfs?

2013-03-18 Thread Chris Murphy
not in use. But there's no requirement for what kind of data is used for overwriting. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: Impossible or Possible to Securely Erase File on Btrfs?

2013-03-18 Thread Chris Murphy
the overwhelming concern is someone gaining physical access to the drive: theft of a laptop, or disposal of a dead drive (for which ATA security erase unit commands aren't going to work). And for that encryption is quite useful and important. Chris Murphy-- To unsubscribe from this list: send the line

Re: Impossible or Possible to Securely Erase File on Btrfs?

2013-03-19 Thread Chris Murphy
On Mar 19, 2013, at 3:06 AM, David Sterba dste...@suse.cz wrote: On Mon, Mar 18, 2013 at 09:18:28PM -0600, Chris Murphy wrote: I'm not finding a reference to secure erase trim. In any case I wouldn't expect it to differ from trim. There's a 'secure discard' trim command in linux, http

Re: How to recover uncorrectable errors ?

2013-03-20 Thread Chris Murphy
these files. So, the only way to solve these problems is to replace the filesystem. The storage media isn't reliable. Replacing the file system eventually will get you right back where you are now, except in a case of multiple devices with a reliable 2nd device. Chris Murphy-- To unsubscribe from

Re: How to recover uncorrectable errors ?

2013-03-20 Thread Chris Murphy
On Mar 20, 2013, at 1:24 PM, Roman Mamedov r...@romanrm.ru wrote: On Wed, 20 Mar 2013 12:19:18 -0600 Chris Murphy li...@colorremedies.com wrote: 195 Hardware_ECC_Recovered 0x001a 057 055 000Old_age Always - 63508940 With such high ECC recovered events, I

Re: How to recover uncorrectable errors ?

2013-03-21 Thread Chris Murphy
On Mar 21, 2013, at 2:57 AM, Frédéric COIFFIER frederic.coiff...@free.fr wrote: Hi Roman, Le jeudi 21 mars 2013 01:24:14 Roman Mamedov a écrit : On Wed, 20 Mar 2013 12:19:18 -0600 Chris Murphy li...@colorremedies.com wrote: 195 Hardware_ECC_Recovered 0x001a 057 055 000

minimum kernel version for btrfsprogs.0.20?

2013-03-28 Thread Chris Murphy
kernels. Is this expected? dmesg reports: [ 300.014764] btrfs: disk space caching is enabled [ 300.024137] BTRFS: couldn't mount because of unsupported optional features (40). [ 300.034148] btrfs: open_ctree failed Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux

Re: minimum kernel version for btrfsprogs.0.20?

2013-03-29 Thread Chris Murphy
On Mar 29, 2013, at 12:04 AM, cwillu cwi...@cwillu.com wrote: On Thu, Mar 28, 2013 at 11:41 PM, Chris Murphy li...@colorremedies.com wrote: Creating a btrfs file system using btrfs-progs-0.20.rc1.20130308git704a08c-1.fc19, and either kernel 3.6.10-4.fc18 or 3.9.0-0.rc3.git0.3.fc19, makes

Re: minimum kernel version for btrfsprogs.0.20?

2013-03-29 Thread Chris Murphy
Chris Murphy wrote: On Mar 29, 2013, at 12:04 AM, cwillu cwi...@cwillu.com wrote: commit 1a72afaa btrfs-progs: mkfs support for extended inode refs unconditionally enables extended irefs (which permits more than 4k links to the same inode). It's the right default imo, but there probably

Re: minimum kernel version for btrfsprogs.0.20?

2013-04-03 Thread Chris Murphy
On Mar 29, 2013, at 9:42 AM, Mitch Harder mitch.har...@sabayonlinux.org wrote: On Fri, Mar 29, 2013 at 1:21 AM, Chris Murphy li...@colorremedies.com wrote: mkfs.btrfs -l 8192 with kernel 3.9.0 creates a file system mountable by 3.9.0 and only 3.9.0 (so far). And while there's no error

Re: minimum kernel version for btrfsprogs.0.20?

2013-04-04 Thread Chris Murphy
by being unable to mount a btrfs volume. The prospect of a (final release) Fedora 19 created btrfs volume being totally unreadable by anything less than kernel 3.9.0 is a bit eyebrow raising. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message

Re: Will btrfs scrub clear corrupt filesystem trees?

2013-10-10 Thread Chris Murphy
for the btrfsck to complete if it is recreating an extents tree?… Yes because scrub is online/mounted, and btrfsck is offline/unmounted. Chris Murphy -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http

Re: Linux Arch: kernel BUG at fs/btrfs/inode.c:873!

2013-10-12 Thread Chris Murphy
referred to here: https://btrfs.wiki.kernel.org/index.php/Btrfs-image this will write the file system state minus data, in case a developer wants to see it at some point. In the meantime you can then blow away the file system and restore the data to get on with using it. Chris Murphy

boot on btrfs, GRUB usage of subvolume set-default breaks boot

2013-10-14 Thread Chris Murphy
it should always start from top level regardless of the set-default subvolume, correct? Yet it's behaving relative to the default subvolume. If I use 'ls (hd0,msdos1)' I'm returned the contents of the subvolume I've set as default, which explains why bootability is broken. Chris Murphy-- To unsubscribe

Re: boot on btrfs, GRUB usage of subvolume set-default breaks boot

2013-10-14 Thread Chris Murphy
On Oct 14, 2013, at 1:21 PM, Chris Murphy li...@colorremedies.com wrote: When /boot is on btrfs, and the default subvolume is changed, it makes the system unbootable. The basic configuration is subvolumes: boot, root, home, on one btrfs volume single device. The installer doesn't change

Re: boot on btrfs, GRUB usage of subvolume set-default breaks boot

2013-10-14 Thread Chris Murphy
On Oct 14, 2013, at 2:29 PM, Josef Bacik jba...@fusionio.com wrote: On Mon, Oct 14, 2013 at 02:23:58PM -0600, Chris Murphy wrote: On Oct 14, 2013, at 1:21 PM, Chris Murphy li...@colorremedies.com wrote: When /boot is on btrfs, and the default subvolume is changed, it makes the system

regression, can't mount subvol if default subvol is changed

2013-10-15 Thread Chris Murphy
the exact same message with a successful mount. So should the mounting of relative pathnames still work? Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo

Re: regression, can't mount subvol if default subvol is changed

2013-10-15 Thread Chris Murphy
On Oct 15, 2013, at 1:23 PM, Chris Murphy li...@colorremedies.com wrote: So should the mounting of relative pathnames still work? Is it related to fix: [PATCH] Btrfs: use right root when checking for hash collision can't move subvols into subvols http://www.mail-archive.com/linux-btrfs

Re: Linux Arch: kernel BUG at fs/btrfs/inode.c:873!

2013-10-15 Thread Chris Murphy
be angels dancing on headpins territory, but I'm curious if successful mount is reproducible with either 3.4.66 or 3.9.11. The 3.5 through 3.8 kernels are neither listed as stable nor longterm. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body

Re: regression, can't mount subvol if default subvol is changed

2013-10-15 Thread Chris Murphy
On Oct 15, 2013, at 1:23 PM, Chris Murphy li...@colorremedies.com wrote: After changing the default subvolume, I can't mount a nested subvolume with a correct relative pathname to the default subvolume; it can only be mounted by absolute path or subvolid. Setup: 3.11.4-302.fc20.x86_64

Re: regression, can't mount subvol if default subvol is changed

2013-10-15 Thread Chris Murphy
On Oct 15, 2013, at 2:50 PM, David Sterba dste...@suse.cz wrote: On Tue, Oct 15, 2013 at 01:23:44PM -0600, Chris Murphy wrote: After changing the default subvolume, I can't mount a nested subvolume with a correct relative pathname to the default subvolume; it can only be mounted by absolute

Re: regression, can't mount subvol if default subvol is changed

2013-10-15 Thread Chris Murphy
On Oct 15, 2013, at 3:48 PM, David Sterba dste...@suse.cz wrote: On Tue, Oct 15, 2013 at 02:58:22PM -0600, Chris Murphy wrote: Looks like this changed with the 3.2 kernel Subvolumes mountable by full path, I thought that was in addition to relative rather than a total change in behavior

Re: Why cannot I move a read-only snapshot around?

2013-10-24 Thread Chris Murphy
that prevented moving of subvolumes into subvolumes (untested if moving subvolumes into folders worked) that was fixed in kernel 3.11.6 so that might be worth a shot. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org

Re: Why cannot I move a read-only snapshot around?

2013-10-24 Thread Chris Murphy
On Oct 24, 2013, at 4:46 PM, Karl Kiniger karl.kini...@med.ge.com wrote: On Thu 131024, Chris Murphy wrote: dr. 1 chris chris 0 Oct 24 16:15 donotmove [chris@f20s ~]$ mv donotmove/ Videos/ mv: cannot move ‘donotmove/’ to ‘Videos/donotmove’: Permission denied' I own

Re: No space left on device, problem

2013-10-26 Thread Chris Murphy
and fails? What's the exact copy command you're using? Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: No space left on device, problem

2013-10-26 Thread Chris Murphy
mount options, and use the same cp -a on a 5.3GB file and cannot reproduce your results. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: No space left on device, problem

2013-10-27 Thread Chris Murphy
On Oct 27, 2013, at 3:53 PM, Igor M igor...@gmail.com wrote: I made some more tests. Disk is 3TB, first cca 225GB is copied without errors. Then errors 'No space left on device' begins. Post the full entire dmesg somewhere please. pastebin.com is one option. Chris Murphy-- To unsubscribe

Re: No space left on device, problem

2013-10-27 Thread Chris Murphy
On Oct 27, 2013, at 4:46 PM, Chris Murphy li...@colorremedies.com wrote: On Oct 27, 2013, at 3:53 PM, Igor M igor...@gmail.com wrote: I made some more tests. Disk is 3TB, first cca 225GB is copied without errors. Then errors 'No space left on device' begins. Post the full entire

Re: No space left on device, problem

2013-10-28 Thread Chris Murphy
to a COMRESET That's unexpected but I don't know that it's releated. The dmesg doesn't report any phy issues with the drive. Maybe check syslog or journalctl with a case insensitive search for phy and see if you find anything. Chris Murphy -- To unsubscribe from this list: send the line

Re: csum failure messages

2013-11-05 Thread Chris Murphy
for stable to go into mainline 3.11.6, so somehow it's been missed. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: Question about btrfs as root filesystem

2013-11-07 Thread Chris Murphy
in particular /var. It's complicating how the OS is to be put back together again. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: How to fix/remove csum failed ino error

2013-11-07 Thread Chris Murphy
to the corruption would be needed and also when trying to mount with the recovery option so it might be worth: dmesg [note the last time entry] dmesg -n7 btrfs mount -o recovery dev mp dmesg report results since the previously noted last time entry Chris Murphy-- To unsubscribe from this list

Re: How to fix/remove csum failed ino error

2013-11-08 Thread Chris Murphy
On Nov 8, 2013, at 1:13 AM, Hugo Mills h...@carfax.org.uk wrote: On Thu, Nov 07, 2013 at 10:56:10PM -0700, Chris Murphy wrote: What's the kernel and btrfs progs version? I wish the dmesg errors were more explicit about the nature of checksum errors: do the two metadata checksums mismatch

Re: Question about btrfs as root filesystem

2013-11-08 Thread Chris Murphy
this rather than distribution convention. We need some distribution collaboration in this area, or this is going to turn into an end-user pain point, with multiboot users top on the list of the injured. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body

Re: Question about btrfs as root filesystem

2013-11-08 Thread Chris Murphy
. And should consider newschoolers, not just oldschoolers, who will become confused by antiquated conventions that have little (or no) efficacy. Chris Murphy -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo

Re: Question about btrfs as root filesystem

2013-11-08 Thread Chris Murphy
to highly complex and variable layouts required to support snapshot system rollbacks is what we'll just have to expect. In which case multiboot on Btrfs is dead in the water. Each distro would have to have their own volume, not their own subvolumes. Chris Murphy-- To unsubscribe from this list

Re: btrfs subvolume list: what is the meaning of top level

2013-11-09 Thread Chris Murphy
for the listed path, and if the top level is 5, there is no prefix for path, the path is the full path. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo

Re: Btrfs might be gradually slowing the boot process

2013-11-09 Thread Chris Murphy
What's leafsize was used when making the file system? The default is now (as of yesterday) 16KB to avoid metadata fragmentation. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http

Re: csum failure messages

2013-11-14 Thread Chris Murphy
On Nov 5, 2013, at 7:34 AM, Hugo Mills h...@carfax.org.uk wrote: On Tue, Nov 05, 2013 at 07:26:54AM -0700, Chris Murphy wrote: On Nov 5, 2013, at 5:16 AM, Russell Coker russ...@coker.com.au wrote: I presume that my filesystem is still corrupt. I'm the original reporter of the bug

Re: BUG: btrfsRe: Does btrfs raid1 actually provide any resilience?

2013-11-14 Thread Chris Murphy
block group mixing? Try 100GB for each device. Is the problem reproducible? Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: btrfs fi show

2013-11-16 Thread Chris Murphy
outputs; one for each volume. Now I get three outputs for the SSD storage volume and SIX outputs for the out volume. Is this a bug or a feature? If it is a feature, what is it telling me? I filed a bug on it. https://bugzilla.redhat.com/show_bug.cgi?id=1031299 Chris Murphy-- To unsubscribe

Re: btrfs fi show

2013-11-16 Thread Chris Murphy
unmounted filesystems (and thus the pause), but at least here, this list is BOTH comprehensive AND avoids dups! This does show me a single instance of the singular volume I have. Chris Murphy -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message

qcow2 on btrfs

2013-11-16 Thread Chris Murphy
Since qcow2 only supports metadata preallocation, not full preallocation, I'm wondering if +C on the sparse file is sufficient, or alternatively using qemu-create -o preallocation=metadata,compat=1.1,lazy_refcounts=on? Or is qcow2 on btrfs just not a good idea? Chris Murphy-- To unsubscribe

Re: Ubunutu scanning for a btrfs fs it will never find

2013-11-17 Thread Chris Murphy
if this is easiest for you fine, but I still think there's at least one bug somewhere and you shouldn't have to do this. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http

Re: linux-stable 3.11.8 oopses

2013-11-18 Thread Chris Murphy
be useful to the btrfs devs about this? sysrq+w would dump the blockage to kernel messages. Depending on your kernel you may need to first enable sysrq functions with echo 1 /proc/sys/kernel/sysrq then echo 2 /proc/sysrq-trigger then dmesg Chris Murphy-- To unsubscribe from this list: send

Re: linux-stable 3.11.8 oopses

2013-11-18 Thread Chris Murphy
On Nov 18, 2013, at 8:53 PM, Chris Murphy li...@colorremedies.com wrote: On Nov 18, 2013, at 8:00 PM, Charles Cazabon charlesc-lists-bt...@pyropus.ca wrote: This is on x86_64, server-class hardware (ECC memory, etc). I ran a scrub overnight that reported no errors, and I'll do it again

Re: Triple parity and beyond

2013-11-19 Thread Chris Murphy
parity and beyond. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: Actual effect of mkfs.btrfs -m raid10 /dev/sdX ... -d raid10 /dev/sdX ...

2013-11-20 Thread Chris Murphy
drive.) So I think those companies can develop this otherwise unneeded feature. n-copies raid1 is a good idea and I think it's being worked on. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo

Re: [virt-devel] btrfs NOCOW for VM disk images

2013-11-22 Thread Chris Murphy
is employed). Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

missing /sbin/fsck.btrfs

2013-11-25 Thread Chris Murphy
://bugzilla.redhat.com/show_bug.cgi?id=862871 So the question, is there supposed to be (one day) a faux /sbin/fsck.btrfs? Or should things always check /etc/fstab fs_passno and honor the fact there is really no such thing? Thanks, Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux

Re: missing /sbin/fsck.btrfs

2013-11-26 Thread Chris Murphy
On Nov 26, 2013, at 5:51 PM, Dave Chinner da...@fromorbit.com wrote: On Mon, Nov 25, 2013 at 11:40:49PM -0700, Chris Murphy wrote: Hi, Is there supposed to be an /sbin/fsck.btrfs? I'm seeing a handful of threads indicating some idea of having it just do a no-op like fsck.xfs does

Re: missing /sbin/fsck.btrfs

2013-11-26 Thread Chris Murphy
, and, using special GPT partitiontypeguids, it's automounting swap and /home even if they're not listed in fstab.) Any comments on the efficacy of initial ro state when / is on Btrfs? Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord

Re: Can scrub also refresh?

2013-12-04 Thread Chris Murphy
are being copied, even sectors you probably don't need. So I personally would use rsync or btrfs send, to get the data off the drive rather than every sector, many of which you don't care about. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message

Re: Can't remove empty directory after kernel panic, no errors in dmesg

2013-12-07 Thread Chris Murphy
. Chris Murphy -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: Can't remove empty directory after kernel panic, no errors in dmesg

2013-12-09 Thread Chris Murphy
On Dec 9, 2013, at 11:54 AM, Niklas Schnelle niklas.schne...@gmail.com wrote: On Sat, Dec 7, 2013 at 11:30 PM, Chris Murphy li...@colorremedies.com wrote: On Dec 7, 2013, at 3:36 AM, Niklas Schnelle niklas.schne...@gmail.com wrote: Hi List, so first the basics. I'm running Arch Linux

Re: Feature Req: mkfs.btrfs -d dup option on single device

2013-12-10 Thread Chris Murphy
On Dec 10, 2013, at 1:31 PM, Imran Geriskovan imran.gerisko...@gmail.com wrote: Currently, if you want to protect your data against bit-rot on a single device you must have 2 btrfs partitions and mount them as Raid1. No this also works: mkfs.btrfs -d dup -m dup -M device Chris Murphy

Re: Feature Req: mkfs.btrfs -d dup option on single device

2013-12-10 Thread Chris Murphy
documentation also says incurs a performance hit, although I'm uncertain of the significance. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo

Re: Feature Req: mkfs.btrfs -d dup option on single device

2013-12-10 Thread Chris Murphy
, or triplicate copies. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: Feature Req: mkfs.btrfs -d dup option on single device

2013-12-10 Thread Chris Murphy
not present 512byte sectors. And since UEFI bugs are all over the place, I'd kinda expect booting to work with some firmware and not others. I haven't tested it, but I'm pretty sure I've read GRUB2 and the kernel are able to boot from 4Kn drives so long as the firmware can handle it. Chris

Re: Feature Req: mkfs.btrfs -d dup option on single device

2013-12-11 Thread Chris Murphy
is in the mostly going to cause you problems without it area). 16 GiB is what we have on the wiki, I think. Yes, man mkfs.btrfs also doesn't list dup as a possible option for -d. Chris Murphy -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord

Re: SSD data retention, was: mkfs.btrfs -d dup option on single device

2013-12-11 Thread Chris Murphy
data? My understanding, which may be wrong, is that the drive only needs power. The data doesn't need to be re-written. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http

Re: btrfs raid multiple devices IO utilisation

2013-12-13 Thread Chris Murphy
. Chris Murphy -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: moving a subvol

2013-12-13 Thread Chris Murphy
? Yes. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: moving a subvol

2013-12-13 Thread Chris Murphy
inconsistent. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: btrfs-send-receive vs rsync for (incremental/full) backups

2013-12-13 Thread Chris Murphy
haven't tried doing it over a network. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: moving a subvol

2013-12-14 Thread Chris Murphy
. This is a bit of a hijack question, but does kickstart offer a way to mount Btrfs with compression option? Chris Murphy -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org

Re: Blocket for more than 120 seconds

2013-12-14 Thread Chris Murphy
/sysrq.txt The filesystem have used about 26TB of the available 29TB (real available data), and some of the files on it are heavily fragmented (around 100 000 extents at about 25GB) Please include results from btrfs fi show, and btrfs fi df mp. Chris Murphy-- To unsubscribe from this list: send

Re: Blocket for more than 120 seconds

2013-12-14 Thread Chris Murphy
storage won't get this full. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: Blocket for more than 120 seconds

2013-12-14 Thread Chris Murphy
on the size of your FS? Maybe it depends more on the size and fragmentation of the files being access, and of remaining free space. Can you do an lsattr on these 25GB files that you say have ~ 100,000 extents? And what are these files? Chris Murphy-- To unsubscribe from this list: send the line

Re: moving a subvol

2013-12-15 Thread Chris Murphy
On Dec 15, 2013, at 10:40 AM, Gene Czarcinski gczarcin...@gmail.com wrote: On 12/14/2013 01:43 PM, Chris Murphy wrote: On Dec 14, 2013, at 2:57 AM, Gene Czarcinski gczarcin...@gmail.com wrote: Since I run Fedora with anaconda I use kickstart installs and can easily repeat an install since

Re: Understanding subvolume hierarchy

2013-12-16 Thread Chris Murphy
to delete needs to be mounted. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: Understanding subvolume hierarchy

2013-12-16 Thread Chris Murphy
: 277 Generation (Gen): 1048 Gen at creation:1048 Parent: 259 Top Level: 259 Flags: - Snapshot(s): Chris Murphy -- To unsubscribe from this list: send the line unsubscribe linux-btrfs

Re: fs/btrfs/extent_io.c:219 free_extent_state.part.36+0x21/0x34 [btrfs]()

2013-12-16 Thread Chris Murphy
is current. Chris Murphy -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: Unmountable Array After Drive Failure During Device Deletion

2013-12-19 Thread Chris Murphy
this missing drive message is about, if you've done a drive replacement and exactly what commands you used to do that and how long ago. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http

Re: Unmountable Array After Drive Failure During Device Deletion

2013-12-19 Thread Chris Murphy
On Dec 19, 2013, at 5:06 PM, Chris Kastorff encryp...@gmail.com wrote: On 12/19/2013 02:21 PM, Chris Murphy wrote: On Dec 19, 2013, at 2:26 AM, Chris Kastorff encryp...@gmail.com wrote: btrfs-progs v0.20-rc1-358-g194aa4a-dirty Most of what you're using is in the kernel so

Re: Unmountable Array After Drive Failure During Device Deletion

2013-12-21 Thread Chris Murphy
to go from here, aside from grabbing a compiler and having at the disk structures myself. There are some other options but they get progressively and quickly into possibly making things a lot worse. At a certain point it's an extraction operation rather than repair and continue. Chris Murphy

Re: unlinked orphans.

2013-12-23 Thread Chris Murphy
) and is persistent. If I temporarily add mount option recovery, then they get cleaned up. Expected? Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: list_del corruption

2013-12-23 Thread Chris Murphy
://koji.fedoraproject.org/koji/buildinfo?buildID=486644 And also via the updates-testing repo within a day or two. Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: Is anyone using btrfs send/receive for backups instead of rsync?

2013-12-28 Thread Chris Murphy
(at least on btrfs) or maybe systemd should set xattr +C on /var/log/journal? That does disable checksumming though, along with data cow. Chris Murphy -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info

Re: Is anyone using btrfs send/receive for backups instead of rsync?

2013-12-28 Thread Chris Murphy
receive. Chris Murphy -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: systemd-journal, nodatacow, was: Is anyone using btrfs send/receive for backups instead of rsync?

2013-12-29 Thread Chris Murphy
@ list? Or maybe file it as an RFE against systemd at freedesktop.org? Chris Murphy-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

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