Re: [PATCH] Cleancache: shim to Xen Transcendent Memory
On Thu, Jul 08, 2010 at 09:42:08AM -0700, Dan Magenheimer wrote:
Signed-off-by: Dan Magenheimer dan.magenhei...@oracle.com
One nitpick:
..
+
+int tmem_enabled;
+
+static int __init enable_tmem(char *s)
+{
+ tmem_enabled = 1;
+ return 1;
+}
+
+__setup(tmem, enable_tmem);
Perhaps 'tmem_setup' is more appropiate as it might be that this
function in the future would be only used to disable tmem, not actually
enable it?
Otherwise, it has been reviewed by me.
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Re: slow deletion of files
Forgot to mention, I filed already a report for this problem: https://bugzilla.kernel.org/show_bug.cgi?id=16117 However, like the other btrfs bug I filed, it was never looked at - so I decided it was a waste of time to file bugs against it. - Clemens -- 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: slow deletion of files
On Mon, Jul 12, 2010 at 10:30:20PM +0200, Clemens Eisserer spake thusly: Another reason I moved away was btrfs corrupted, and btrfsck is still not able to repair it. I really like btrfs but in my opinion it has still a long road to go and declaring it stable in 2.6.35 is quite optimistic at best. How many of reiserfs' problems were due to bugs in reiserfs vs due to buggy PC memory which is rarely ECC? These fancy new filesystems hold a lot of datastructures in memory compared to older filesystems which would seem to increase the chances that they could be broken by bad RAM. I am concerned that a flipped bit in memory somewhere could be written out to disk and hose the filesystem. I know ZFS implements a lot of checksums to prevent this sort of thing but it also tends to run on nicer hardware with ECC. I never had corruption problems with reiserfs even while running it on many terabytes of disk. I know plenty of people who constantly lost data to it. I can't explain the difference other than hardware. -- Tracy Reed http://tracyreed.org pgpyK8k8VpKSy.pgp Description: PGP signature
Re: Disk space usage displayed incorrectly?
On Sat, Jul 10, 2010 at 07:22:26AM +0530, jck wrote: Hello, when i check diskspace usage of a btrfs partition using df i get the wrong free space, this is expected i think. We do try to take the raid levels into account during df, but only for the space that is already allocated. However even when i use 'btrfs filesystem df' I get wrong freespace: Data: total=123.58GB, used=87.31GB Metadata: total=61.00GB, used=396.29MB System: total=32.00MB, used=16.00KB Does this mean that after the 123 GB of 'Data' fills up I wont be able to add more stuff to the partition? I'm using btrfs-progs-git (jul 10) This does reflect the space that is allocated, but the drive itself may have more free space. btrfs filesystem show will give you a few more details. Basically btrfs allocates from the drive in chunks of about 1GB and then puts the file data or metadata into those chunks. So if you do a mkfs and then create one file, you might have 1TB of space on the drive that hasn't been allocated yet. -chris -- 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: Possible corruption following a crash
On Sun, Jul 11, 2010 at 12:39:58AM +0300, nokia wrote: http://pastebin.com/5r07k9Tn Hi everyone, A power outage occurring after successfully converting ext3-btrfs/mounting an external drive now freezes at least on .32 kernels (Lucid and F12) with the traceback shown in the pastebin. Following cjb's instructions in #btrfs I'm reporting it here. Thanks, could you please include the error messages during mount? -chris -- 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: Disk space usage displayed incorrectly?
I tested it and the partition gets filled at 123.58 GB, the 60GB is getting wasted. is there anything i can do about this? On Tue, Jul 13, 2010 at 6:46 AM, Chris Mason chris.ma...@oracle.com wrote: On Sat, Jul 10, 2010 at 07:22:26AM +0530, jck wrote: Hello, when i check diskspace usage of a btrfs partition using df i get the wrong free space, this is expected i think. We do try to take the raid levels into account during df, but only for the space that is already allocated. However even when i use 'btrfs filesystem df' I get wrong freespace: Data: total=123.58GB, used=87.31GB Metadata: total=61.00GB, used=396.29MB System: total=32.00MB, used=16.00KB Does this mean that after the 123 GB of 'Data' fills up I wont be able to add more stuff to the partition? I'm using btrfs-progs-git (jul 10) This does reflect the space that is allocated, but the drive itself may have more free space. btrfs filesystem show will give you a few more details. Basically btrfs allocates from the drive in chunks of about 1GB and then puts the file data or metadata into those chunks. So if you do a mkfs and then create one file, you might have 1TB of space on the drive that hasn't been allocated yet. -chris -- 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: Disk space usage displayed incorrectly?
I ran btrfs filesystem balance but now it has become like this: Metadata: total=5.00GB, used=507.25MB Data: total=113.58GB, used=89.51GB System: total=32.00MB, used=24.00KB On Tue, Jul 13, 2010 at 7:23 AM, jck j...@archlinux.us wrote: I tested it and the partition gets filled at 123.58 GB, the 60GB is getting wasted. is there anything i can do about this? On Tue, Jul 13, 2010 at 6:46 AM, Chris Mason chris.ma...@oracle.com wrote: On Sat, Jul 10, 2010 at 07:22:26AM +0530, jck wrote: Hello, when i check diskspace usage of a btrfs partition using df i get the wrong free space, this is expected i think. We do try to take the raid levels into account during df, but only for the space that is already allocated. However even when i use 'btrfs filesystem df' I get wrong freespace: Data: total=123.58GB, used=87.31GB Metadata: total=61.00GB, used=396.29MB System: total=32.00MB, used=16.00KB Does this mean that after the 123 GB of 'Data' fills up I wont be able to add more stuff to the partition? I'm using btrfs-progs-git (jul 10) This does reflect the space that is allocated, but the drive itself may have more free space. btrfs filesystem show will give you a few more details. Basically btrfs allocates from the drive in chunks of about 1GB and then puts the file data or metadata into those chunks. So if you do a mkfs and then create one file, you might have 1TB of space on the drive that hasn't been allocated yet. -chris -- 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: Disk space usage displayed incorrectly?
I finally understood whats going on, thank you. On Tue, Jul 13, 2010 at 9:32 AM, jck j...@archlinux.us wrote: I ran btrfs filesystem balance but now it has become like this: Metadata: total=5.00GB, used=507.25MB Data: total=113.58GB, used=89.51GB System: total=32.00MB, used=24.00KB On Tue, Jul 13, 2010 at 7:23 AM, jck j...@archlinux.us wrote: I tested it and the partition gets filled at 123.58 GB, the 60GB is getting wasted. is there anything i can do about this? On Tue, Jul 13, 2010 at 6:46 AM, Chris Mason chris.ma...@oracle.com wrote: On Sat, Jul 10, 2010 at 07:22:26AM +0530, jck wrote: Hello, when i check diskspace usage of a btrfs partition using df i get the wrong free space, this is expected i think. We do try to take the raid levels into account during df, but only for the space that is already allocated. However even when i use 'btrfs filesystem df' I get wrong freespace: Data: total=123.58GB, used=87.31GB Metadata: total=61.00GB, used=396.29MB System: total=32.00MB, used=16.00KB Does this mean that after the 123 GB of 'Data' fills up I wont be able to add more stuff to the partition? I'm using btrfs-progs-git (jul 10) This does reflect the space that is allocated, but the drive itself may have more free space. btrfs filesystem show will give you a few more details. Basically btrfs allocates from the drive in chunks of about 1GB and then puts the file data or metadata into those chunks. So if you do a mkfs and then create one file, you might have 1TB of space on the drive that hasn't been allocated yet. -chris -- 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
