search for: menscher

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2005 Jul 08
filesystem fragmentation stats?
...nk e2fsck tells you, but only if you take the filesystem offline for the scan. Is there anything that will give a percentage for a *live* filesystem? (I have a fs that's been at >95% usage for quite some time, and I want to check for any fragmentation that could have resulted.) Damian Menscher -- -=#| Physics Grad Student & SysAdmin @ U Illinois Urbana-Champaign |#=- -=#| 488 LLP, 1110 W. Green St, Urbana, IL 61801 Ofc:(217)333-0038 |#=- -=#| 4602 Beckman, VMIL/MS, Imaging Technology Group:(217)244-3074 |#=- -=#| <menscher at> Fax:(217)333-9819...
2005 Jun 17
[Q] Is this true and does it mean there is dynamic defragmentation in ext2/3?
Someone recently posted the following statement midway down the page at >You don't need to defragment ext2/ext3 because as you use the >filesystem file blocks and inodes are moved around and reallocated >to keep the data nearly contiguous. It's not perfect, but it
2006 Apr 17
EXT3-fs unexpected failure msg ?
Hi - We have had a raid failure, we have some what recovered but we continue to see the following ext3 message... Apr 17 14:59:14 acnlin84 kernel: EXT3-fs unexpected failure: (((jh2bh(jh))->b_state & (1UL << BH_Uptodate)) != 0); Apr 17 14:59:14 acnlin84 kernel: Possible IO failure. Since we have experienced several instances of ext3 file system corruption when we lose
2006 Feb 28
Status of fragment support, advantages of having fewer indoes
Hi, There wasn't much information regarding fragment support of ext2/3 since 2003 [1], Andreas stating that there were problems with the xattr implementation. Has this changed in the meanwhile? My second question is regarding the bytes-per-inode ratio: What benefits would I gain from having fewer inodes? I reckon it's only diskspace (if so, how much?). best regards, Michael Renner [1]
2005 Jun 02
passwd : Module is unknown (Redhat 9 Enterprise Edition)
Hi All, Can anyone help me in resolving this problem. I use Redhat 9 Enterprise edition. I have a session in which I logged in as a root. When I issue the command "su" from any other user it is throwing error "su : Incorrect password", If I try to change the password from the root session, it is throwing error "passwd : module unknown". [root at TESTING
2005 Aug 11
URGENT: How to recover ext3 files?
Hi, After panic boot, I have executed fsck for the mount point and we couldn't find a single file. We have lot of directories under lost+found like this #3194985. Can anyone tell me how to recover the data from this folder? This is urgent. Thanks in advance for your help. Regards Kapil Sampath "Many of life's failures are people who did not realize how close they
2006 May 10
Why different directory sizes?
I just discovered two directories with the same number of files and the same number of hard links but different size: # stat /home/david/linuxburg/fax.old/docq_ps.nnnn \ /hdsync/home/david/linuxburg/fax.old/docq_ps.nnnn File: `/home/david/linuxburg/fax.old/docq_ps.nnnn' Size: 8192 Blocks: 16 IO Block: 4096 directory Device: 801h/2049d Inode: 52060
2006 Oct 03
16TB ext3 mainstream - when?
Are we likely to see patches to allow 16TB ext3 in the mainstream kernel any time soon? I am working with a storage box that has 16x750GB drives RAID5-ed together to create a potential 10.5TB of potential storage. But because ext3 is limited to 8TB I am forced to split into 2 smaller ext3 filesystems which is really cumbersome for my app. Any ideas anybody?
2005 May 19
[Q] Where does all the space go?
I created a filesystem as follows: mke2fs -j -O dir_index -O sparse_super -T largefile /dev/drbd/6 Here's the the output from df Filesystem Size Used Avail Use% /dev/drbd/6 475G 33M 452G 1% It seems that ext3 has taken 23 GB, which is about 5% of the total disk size, for itself. Is that right? If that is, indeed, the case, why does df just list 33M as being
2005 Apr 24
Help needed to recover data from ext3 file system where mkfs was issued accidentally
Hi, I connected my harddisk which had ext3 filesystem and some files archived in it as slave device and issued "mkfs /dev/hdb2" accidentally. Immediately I issued Ctrl C and stopped the process. But before that it had deleted some 100 Blocks. After that I am unable to boot that hard disk as primary device. The system is asking me "please insert a valid boot device and press
2005 Nov 03
mount r/w and r/o
I have an ext3 filesystem mounted r/w on 1 host and r/o on multiple hosts. Dangerous but cost effective. I recently implemented some protection through a fc switch that restricts some hosts to r/o access to the data luns. So if someone types mount -o rw or something, all is not lost. The issue occurs when it's mounted r/w on 1 host and another host attempts to mount it r/o. The mount
2006 Apr 06
deleting partition does not effect superblock?
Hi, I am using kernel On my system, I first created a partition with EXT3 and put some data on it. Later, I deleted the partition, and re-created another partition with the same starting block number and a higher ending block number. I intended to format it with another filesystem, but surprisingly (or maybe just to me), the superblock of the partition had not changed. I could still
2005 Oct 31
1.5TB ext3 partitions - mke2fs problems at 2^31 blocks
I am trying to get a 9550SX to support a 1.5TB raid partition. I am unsure whether this is a driver problem, or an ext3 problem (as am getting some other wierdness detecting LUNs), but... fdisk recognizes the disk OK. I make a single extended partition with a single 1.5TB logical partition inside it. I then run mke2fs -j /dev/sdb It gets to writing inode tables, and wants to write 11176 block
2005 Feb 16
mke2fs options for very large filesystems (and corruption!)
...thoughts people might have on this. Are we safe if we just don't create files larger than 2TB in the future? Or did something else go wrong? If creating a >2TB file really is possible at the user level, and can really trash a filesystem, then this would appear to be a serious bug. Damian Menscher -- -=#| Physics Grad Student & SysAdmin @ U Illinois Urbana-Champaign |#=- -=#| 488 LLP, 1110 W. Green St, Urbana, IL 61801 Ofc:(217)333-0038 |#=- -=#| 4602 Beckman, VMIL/MS, Imaging Technology Group:(217)244-3074 |#=- -=#| <menscher at> Fax:(217)333-9819...
2002 Apr 02
[Bug 199] New: ssh-agent -k doesn't check $SHELL environment variable
...ment variable Product: Portable OpenSSH Version: 3.1p1 Platform: All OS/Version: All Status: NEW Severity: minor Priority: P3 Component: ssh-agent AssignedTo: openssh-unix-dev at ReportedBy: menscher+bug at CC: menscher+bug at Line 882 of ssh-agent.c reads: if (ac == 0 && !c_flag && !k_flag && !s_flag && !d_flag) { stuff to set c_flag=1 iff $SHELL=*csh } This means that someone running ssh-agent -k will have k_flag set and...
2006 Jan 17
Mounting problem
Hi folks, For unknown cause I encounter following mounting problem; # /mnt/hda8 mount: wrong fs type, bad option, bad superblock on /dev/hda8, missing codepage or other error In some cases useful info is found in syslog - try dmesg | tail or so # dmesg | tail via82cxxx: timeout while reading AC97 codec (0x9A0000) via82cxxx: timeout while reading AC97 codec (0x9A0000)
2005 May 22
FSCK of corrupted ext3 filesystem
Hello, I have a 1.3TB ext3 filesystem that has been in service for about 3 months. About 6 days ago the Emulex fibrechannel controller logged a SCSI error and the filesystem changed to RO. It appears that the filesystem instantly changes to RO and prevents the journal from working, therefore invalidating the filesystem. The filesystem was unmounted and a remount was attempted. The mount failed
2005 Feb 25
ext3 +2TB fs
I've got a 3.3TB ext3 on a FC3 64-bit system, running kernel 2.6.10-1.766FC3smp. I create the partition with parted 1.6.21, and I make the fs via: mkfs.ext3 -m1 -b 4096 -T largefile4 /dev/sda1 Works fine. bonnie++ running on it multiple times for days on end, no problems. However, I do the exact same setup on a RHEL4-AS i686 system, 32-bit, and the fs is totally hosed, get all kinds of
2006 Apr 11
ext3 filesystem corruption
Hi - We have had 3 rather major occurances of ext3 filesystem corruption lately, i.e. so bad we couldn't event mount, and fsck didn't help. I am looking for pointers, that could help us investigate the root cause. In general... We are running RedHat WS 3 Update 6, 2.4.21-40.2.ELsmp or 2.4.21-37.ELsmp We have a small SAN system that looks like this
2006 Jan 19
ext3 fs errors 3T fs
Hello, I looked through the archives a bit and could not find anything relevant, if you know otherwise please point me in the right direction. I have a ~3T ext3 filesystem on linux software raid that had been behaving corectly for sometime. Not to long ago it gave the following error after trying to mount it: mount: wrong fs type, bad option, bad superblock on /dev/md0, or too many