Re: [BackupPC-users] Best FS for BackupPC
Holger Parplies schrieb: Hi, Carl Wilhelm Soderstrom wrote on 2011-05-26 06:05:48 -0500 [Re: [BackupPC-users] Best FS for BackupPC]: On 05/26 12:20 , Adam Goryachev wrote: BTW, specifically related to backuppc, many years ago, reiserfsck was perfect as it doesn't have any concept or limit on 'inodes'... Same for mail and news (nntp) servers. Do XFS/JFS have this feature? I'll look into these things another day, when I have some time :) There are indeed 'inodes' listed in the 'df -i' output of XFS filesystems. However, I've never heard of anyone hitting the inode limit on XFS, unlike ext3. of course XFS *has* inodes, and I wondered about the 'df -i' output, too, when I tried it yesterday. I don't remember reiserfs giving any meaningful information for 'df -i' ... nope, '0 0 0 -'. I sincerely hope that XFS doesn't have *static inode allocation*, meaning I have to choose the number of inodes at file system creation time and waste any space I reserve for them but do not turn out to need. That was one main concern when choosing my pool FS. Actually, mkfs.xfs(8) explains a parameter '-i maxpct=value': This specifies the maximum percentage of space in the filesystem that can be allocated to inodes. The default value is 25% for filesystems under 1TB, 5% for filesystems under 50TB and 1% for filesystems over 50TB. The further explanation says this is achieved by the data block allocator avoiding lower blocks, which are needed for obtaining 32-bit inode numbers. It leaves two questions unanswered (to me, at least): ... have a look at the inode64 mount option. http://xfs.org/index.php/XFS_FAQ#Q:_What_is_the_inode64_mount_option_for.3F Ralf -- vRanger cuts backup time in half-while increasing security. With the market-leading solution for virtual backup and recovery, you get blazing-fast, flexible, and affordable data protection. Download your free trial now. http://p.sf.net/sfu/quest-d2dcopy1 ___ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List:https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki:http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
Re: [BackupPC-users] BackupPC_dump hangs with: .: size doesn't match
Some more notes... I tried also setting up a separate host to back up the same filesystem.This, in theory, should mean that it doesn't refer to the saved data at all. But the result of it was that it simply hung using 100% of the CPU at the end and ultimately failed. So far I have only observed the problem with the rsync backend; tar seems to work. This is becoming a deeply concerning problem and help would be appreciated. Thanks, -- John -- vRanger cuts backup time in half-while increasing security. With the market-leading solution for virtual backup and recovery, you get blazing-fast, flexible, and affordable data protection. Download your free trial now. http://p.sf.net/sfu/quest-d2dcopy1 ___ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List:https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki:http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
Re: [BackupPC-users] BackupPC_dump hangs with: .: size doesn't match
On 05/27 07:56 , John Goerzen wrote: So far I have only observed the problem with the rsync backend; tar seems to work. Pardon me if I didn't read and understand your problem sufficiently; but if you exclude the problematic files; will the backup run to completion? -- Carl Soderstrom Systems Administrator Real-Time Enterprises www.real-time.com -- vRanger cuts backup time in half-while increasing security. With the market-leading solution for virtual backup and recovery, you get blazing-fast, flexible, and affordable data protection. Download your free trial now. http://p.sf.net/sfu/quest-d2dcopy1 ___ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List:https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki:http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
Re: [BackupPC-users] BackupPC_dump hangs with: .: size doesn't match
Carl Wilhelm Soderstrom chrome at real-time.com writes: On 05/27 07:56 , John Goerzen wrote: So far I have only observed the problem with the rsync backend; tar seems to work. Pardon me if I didn't read and understand your problem sufficiently; but if you exclude the problematic files; will the backup run to completion? I have yet to discover what they are. The filesystem in question contains about 400,000. It seems that the backup hangs after it finishes backing up the filesystem too, which is particularly strange. I am trying to separate it out into separate jobs to gain some clues but the process of elimination may be long and difficult with a data set that large. -- John -- vRanger cuts backup time in half-while increasing security. With the market-leading solution for virtual backup and recovery, you get blazing-fast, flexible, and affordable data protection. Download your free trial now. http://p.sf.net/sfu/quest-d2dcopy1 ___ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List:https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki:http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
Re: [BackupPC-users] BackupPC_dump hangs with: .: size doesn't match
On 5/27/11 8:46 PM, John Goerzen wrote: So far I have only observed the problem with the rsync backend; tar seems to work. Pardon me if I didn't read and understand your problem sufficiently; but if you exclude the problematic files; will the backup run to completion? I have yet to discover what they are. The filesystem in question contains about 400,000. It seems that the backup hangs after it finishes backing up the filesystem too, which is particularly strange. I am trying to separate it out into separate jobs to gain some clues but the process of elimination may be long and difficult with a data set that large. Is there any chance the filesystem is corrupted? Or you have some sparse file that becomes huge when you read through it? -- Les Mikesell lesmikes...@gmail.com -- vRanger cuts backup time in half-while increasing security. With the market-leading solution for virtual backup and recovery, you get blazing-fast, flexible, and affordable data protection. Download your free trial now. http://p.sf.net/sfu/quest-d2dcopy1 ___ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List:https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki:http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
