NFS Problems - UNIX for Advanced & Expert Users

mbathrick · #1 09-13-2008

I am having a really bad day today.

I am trying to get an nfs mount to work. I want to have a mount from machinea:/home going to /home on machineb. I can mount machinea:/home on any mount point EXCEPT /home and see the files. I can not see the files or list the directory (it hangs) when I mount on /home. Machinea and machineb are both slackware.

I am at a loss.

I tried deleting mount point /home, mounting to mount point /home0 (I can see the files there) and doing a symbolic link to /home. I still can't see the files at /home but now I also can't see them at /home0.

Perhaps it is simply not responding, as an ls -las hangs. I dunno. I would appreciate any help or pointers on this. My web server has been down for two days now and I am out of ideas as well as sleep.

the Comand I was using is "mount -t nfs machinea:/home /home" - on my solaris box, the command "mount -f nfs -o soft,rw machinea:/home /home" worked fine.

Mike

mbathrick · #2 09-13-2008

Here's a little more info:

the fstab reads like this - machinea:/home /home nfs defaults,nolock 0 0

rpcinfo

program vers proto port
100000 2 tcp 111 portmapper
100000 2 udp 111 portmapper
100011 1 udp 698 rquotad
100011 2 udp 698 rquotad
100011 1 tcp 701 rquotad
100011 2 tcp 701 rquotad
100003 2 udp 2049 nfs
100003 3 udp 2049 nfs
100021 1 udp 32770 nlockmgr
100021 3 udp 32770 nlockmgr
100021 4 udp 32770 nlockmgr
100005 1 udp 32768 mountd
100005 1 tcp 32771 mountd
100005 2 udp 32768 mountd
100005 2 tcp 32771 mountd
100005 3 udp 32768 mountd
100005 3 tcp 32771 mountd
100024 1 udp 32772 status
100024 1 tcp 32769 status

and a mount command gives:

machinea:/home on /home type nfs (rw,nolock,addr=xxx.xxx.xxx.xxx) where xxx.xxx.xxx.xxx is the ip address for machinea

Hope this sheds more light...

umang.gopani · #3 09-13-2008

1. When you mount /home to any another mount on Machine B, Can you list the files perfectly ?
2. Also, Can you give me ls -ld /home on Machine B ?
3. cat /etc/exports on Mahcine A (which I assume is the NFS server)

mbathrick · #4 09-13-2008

Thanks!

Yes, anywhere else the list works perfectly (it's a large filesystem, so it takes a sec to get started, but then it bangs right down).

ls -ld /home stops that session from responding. - wait a minute! - it came back after about five minutes.

drwxr-xr-x 1118 root root 86016 2008-09-13 16:13 /home/

Here is the contents of /etc/exports

cat /etc/exports
# See exports(5) for a description.
# This file contains a list of all directories exported to other computers.
# It is used by rpc.nfsd and rpc.mountd.

/home machined(rw,no_root_squash) machinec(rw,no_root_squash) machineb(rw,no_root_squash) machinee(rw,no_root_squash)

umang.gopani · #5 09-13-2008

please also paste or attach the contents of dmesg for Machine A and B

mbathrick · #6 09-13-2008

I don't know what happened, but here it is again:

Machinea Server

Quote:

/bin/dmesg
Linux version 2.4.18 (root@midas) (gcc version 2.95.3 20010315 (release)) #10 Fri May 31 01:36:52 PDT 2002
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 000000000009d000 (usable)
BIOS-e820: 000000000009d000 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 000000001fffb000 (usable)
BIOS-e820: 000000001fffb000 - 0000000020000000 (ACPI data)
BIOS-e820: 00000000fec00000 - 00000000fec01000 (reserved)
BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
BIOS-e820: 00000000fffc0000 - 0000000100000000 (reserved)
On node 0 totalpages: 131067
zone(0): 4096 pages.
zone(1): 126971 pages.
zone(2): 0 pages.
Kernel command line: BOOT_IMAGE=Linux ro root=801
Initializing CPU#0
Detected 497.790 MHz processor.
Console: colour VGA+ 80x25
Calibrating delay loop... 992.87 BogoMIPS
Memory: 512968k/524268k available (1662k kernel code, 10904k reserved, 474k data, 232k init, 0k highmem)
Dentry-cache hash table entries: 65536 (order: 7, 524288 bytes)
Inode-cache hash table entries: 32768 (order: 6, 262144 bytes)
Mount-cache hash table entries: 8192 (order: 4, 65536 bytes)
Buffer-cache hash table entries: 32768 (order: 5, 131072 bytes)
Page-cache hash table entries: 131072 (order: 7, 524288 bytes)
CPU: Before vendor init, caps: 0383fbff 00000000 00000000, vendor = 0
CPU: L1 I cache: 16K, L1 D cache: 16K
CPU: L2 cache: 512K
CPU: After vendor init, caps: 0383fbff 00000000 00000000 00000000
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
CPU: After generic, caps: 0383fbff 00000000 00000000 00000000
CPU: Common caps: 0383fbff 00000000 00000000 00000000
CPU: Intel Pentium III (Katmai) stepping 02
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
Checking for popad bug... OK.
POSIX conformance testing by UNIFIX
mtrr: v1.40 (20010327) Richard Gooch (rgooch@atnf.csiro.au)
mtrr: detected mtrr type: Intel
PCI: PCI BIOS revision 2.10 entry at 0xfd4fc, last bus=5
PCI: Using configuration type 1
PCI: Probing PCI hardware
PCI: Discovered peer bus 01
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
IBM machine detected. Enabling interrupts during APM calls.
Starting kswapd
VFS: Diskquotas version dquot_6.4.0 initialized
Journalled Block Device driver loaded
pty: 512 Unix98 ptys configured
Serial driver version 5.05c (2001-07-08) with HUB-6 MANY_PORTS MULTIPORT SHARE_IRQ SERIAL_PCI enabled
ttyS00 at 0x03f8 (irq = 4) is a 16550A
ttyS01 at 0x02f8 (irq = 3) is a 16550A
Real Time Clock Driver v1.10e
block: 128 slots per queue, batch=32
RAMDISK driver initialized: 16 RAM disks of 7777K size 1024 blocksize
Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
PIIX4: IDE controller on PCI bus 00 dev 99
PIIX4: chipset revision 1
PIIX4: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0xffa0-0xffa7, BIOS settings: hda

io, hdb

io
hda: CD-ROM CDU701-F, ATAPI CD/DVD-ROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
hda: ATAPI 32X CD-ROM drive, 128kB Cache, DMA
Uniform CD-ROM driver Revision: 3.12
ide-floppy driver 0.97.sv
Floppy drive(s): fd0 is 1.44M
FDC 0 is a National Semiconductor PC87306
loop: loaded (max 8 devices)
Compaq CISS Driver (v 2.4.5)
ide-floppy driver 0.97.sv
Promise Fasttrak(tm) Softwareraid driver 0.03beta: No raid array found
Highpoint HPT370 Softwareraid driver for linux version 0.01
No raid array found
SCSI subsystem driver Revision: 1.00
scsi0 : IBM PCI ServeRAID 4.80.26 <ServeRAID II>
Vendor: IBM Model: SERVERAID Rev: 1.00
Type: Direct-Access ANSI SCSI revision: 02
Vendor: IBM Model: SERVERAID Rev: 1.00
Type: Processor ANSI SCSI revision: 02
Vendor: Quantum Model: DLT4000 Rev: D473
Type: Sequential-Access ANSI SCSI revision: 02
Vendor: SDR Model: GEM200 Rev: 2
Type: Processor ANSI SCSI revision: 02
megaraid: v1.18 (Release Date: Thu Oct 11 15:02:53 EDT 2001)
megaraid: no BIOS enabled.
3ware Storage Controller device driver for Linux v1.02.00.016.
3w-xxxx: No cards with valid units found.
Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
SCSI device sda: 106641408 512-byte hdwr sectors (54600 MB)
Partition check:
sda: sda1 sda2 sda3 sda4
Attached scsi generic sg1 at scsi0, channel 0, id 15, lun 0, type 3
Attached scsi generic sg3 at scsi0, channel 2, id 15, lun 0, type 3
md: linear personality registered as nr 1
md: raid0 personality registered as nr 2
md: raid1 personality registered as nr 3
md: raid5 personality registered as nr 4
raid5: measuring checksumming speed
8regs : 868.400 MB/sec
32regs : 567.600 MB/sec
pIII_sse : 1002.800 MB/sec
pII_mmx : 1124.400 MB/sec
p5_mmx : 1160.400 MB/sec
raid5: using function: pIII_sse (1002.800 MB/sec)
md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
LVM version 1.0.1-rc4(ish)(03/10/2001)
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP
IP: routing cache hash table of 4096 buckets, 32Kbytes
TCP: Hash tables configured (established 32768 bind 32768)
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
kjournald starting. Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
VFS: Mounted root (ext3 filesystem) readonly.
Freeing unused kernel memory: 232k freed
Adding Swap: 1952236k swap-space (priority -1)
EXT3 FS 2.4-0.9.17, 10 Jan 2002 on sd(8,1), internal journal
kjournald starting. Commit interval 5 seconds
EXT3 FS 2.4-0.9.17, 10 Jan 2002 on sd(8,3), internal journal
EXT3-fs: mounted filesystem with ordered data mode.
kjournald starting. Commit interval 5 seconds
EXT3 FS 2.4-0.9.17, 10 Jan 2002 on sd(8,4), internal journal
EXT3-fs: mounted filesystem with ordered data mode.
eepro100.c:v1.09j-t 9/29/99 Donald Becker http://www.scyld.com/network/eepro100.html
eepro100.c: $Revision: 1.36 $ 2000/11/17 Modified by Andrey V. Savochkin <saw@saw.sw.com.sg> and others
eth0: Intel Corp. 82557 [Ethernet Pro 100], 00:90:27:71:1C:0C, IRQ 11.
Board assembly 729757-003, Physical connectors present: RJ45
Primary interface chip i82555 PHY #1.
General self-test: passed.
Serial sub-system self-test: passed.
Internal registers self-test: passed.
ROM checksum self-test: passed (0x04f4518b).
scsi1 : SCSI host adapter emulation for IDE ATAPI devices
Linux PCMCIA Card Services 3.1.33
kernel build: 2.4.18 #1 Wed May 8 13:51:37 PDT 2002
options: [pci] [cardbus]
Intel ISA/PCI/CardBus PCIC probe:
no bridges found.
Databook TCIC-2 PCMCIA probe: not found.
ds: no socket drivers loaded!
Installing knfsd (copyright (C) 1996 okir@monad.swb.de).

Machineb Client

Quote:

/bin/dmesg
Linux version 2.4.29 (root@midas) (gcc version 3.3.4) #2 Thu Jan 20 16:20:24 PST 2005
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 000000000009e000 (usable)
BIOS-e820: 000000000009e000 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 000000003fff4fc0 (usable)
BIOS-e820: 000000003fff4fc0 - 0000000040000000 (ACPI data)
BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved)
Warning only 896MB will be used.
Use a HIGHMEM enabled kernel.
896MB LOWMEM available.
On node 0 totalpages: 229376
zone(0): 4096 pages.
zone(1): 225280 pages.
zone(2): 0 pages.
IBM machine detected. Enabling interrupts during APM calls.
Kernel command line: BOOT_IMAGE=Linux ro root=802
Initializing CPU#0
Detected 500.034 MHz processor.
Console: colour dummy device 80x25
Calibrating delay loop... 996.14 BogoMIPS
Memory: 903996k/917504k available (2130k kernel code, 13116k reserved, 685k data, 124k init, 0k highmem)
Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes)
Inode cache hash table entries: 65536 (order: 7, 524288 bytes)
Mount cache hash table entries: 512 (order: 0, 4096 bytes)
Buffer cache hash table entries: 65536 (order: 6, 262144 bytes)
Page-cache hash table entries: 262144 (order: 8, 1048576 bytes)
CPU: L1 I cache: 16K, L1 D cache: 16K
CPU: L2 cache: 512K
CPU serial number disabled.
CPU: After generic, caps: 0383fbff 00000000 00000000 00000000
CPU: Common caps: 0383fbff 00000000 00000000 00000000
CPU: Intel Pentium III (Katmai) stepping 03
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
POSIX conformance testing by UNIFIX
mtrr: v1.40 (20010327) Richard Gooch (rgooch@atnf.csiro.au)
mtrr: detected mtrr type: Intel
PCI: PCI BIOS revision 2.10 entry at 0xfd29c, last bus=15
PCI: Using configuration type 1
PCI: Probing PCI hardware
PCI: Probing PCI hardware (bus 00)
PCI: Searching for i450NX host bridges on 00:10.0
PCI: Cannot allocate resource region 4 of device 00:00.1
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
Starting kswapd
VFS: Disk quotas vdquot_6.5.1
Journalled Block Device driver loaded
vesafb: framebuffer at 0x5c000000, mapped to 0xf880d000, size 1024k
vesafb: mode is 1024x768x8, linelength=1024, pages=0
vesafb: protected mode interface info at c000:5b85
vesafb: scrolling: redraw
Console: switching to colour frame buffer device 128x48
fb0: VESA VGA frame buffer device
pty: 512 Unix98 ptys configured
Serial driver version 5.05c (2001-07-08) with HUB-6 MANY_PORTS MULTIPORT SHARE_IRQ SERIAL_PCI enabled
ttyS00 at 0x03f8 (irq = 4) is a 16550A
ttyS01 at 0x02f8 (irq = 3) is a 16550A
Real Time Clock Driver v1.10f
Floppy drive(s): fd0 is 1.44M
FDC 0 is a National Semiconductor PC87306
RAMDISK driver initialized: 16 RAM disks of 7777K size 1024 blocksize
loop: loaded (max 8 devices)
Uniform Multi-Platform E-IDE driver Revision: 7.00beta4-2.4
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
PIIX4: IDE controller at PCI slot 00:00.1
PIIX4: chipset revision 1
PIIX4: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0x1000-0x1007, BIOS settings: hda

io, hdb

io
PIIX4: IDE controller at PCI slot 00:10.0
PIIX4: device not capable of full native PCI mode
PIIX4: device disabled (BIOS)
PIIX4: not 100% native mode: will probe irqs later
PIIX4: neither IDE port enabled (BIOS)
hda: CRD-8322B, ATAPI CD/DVD-ROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
hda: attached ide-cdrom driver.
hda: ATAPI 32X CD-ROM drive, 128kB Cache, DMA
Uniform CD-ROM driver Revision: 3.12
SCSI subsystem driver Revision: 1.00
Loading Adaptec I2O RAID: Version 2.4 Build 5
Detecting Adaptec I2O RAID controllers...
Red Hat/Adaptec aacraid driver (1.1-3 Jan 20 2005 16:18:15)
scsi1 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.36
<Adaptec aic7895 Ultra SCSI adapter>
aic7895C: Ultra Wide Channel B, SCSI Id=7, 32/253 SCBs

scsi2 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.36
<Adaptec aic7895 Ultra SCSI adapter>
aic7895C: Ultra Wide Channel A, SCSI Id=7, 32/253 SCBs

(scsi1:A:0): 40.000MB/s transfers (20.000MHz, offset 8, 16bit)
Vendor: IBM-PCCO Model: ST39102LC !# Rev: B219
Type: Direct-Access ANSI SCSI revision: 02
(scsi1:A:1): 40.000MB/s transfers (20.000MHz, offset 8, 16bit)
Vendor: SEAGATE Model: ST318404LC Rev: 0002
Type: Direct-Access ANSI SCSI revision: 03
(scsi1:A:2): 40.000MB/s transfers (20.000MHz, offset 8, 16bit)
Vendor: IBM-PCCO Model: ST39102LC !# Rev: B203
Type: Direct-Access ANSI SCSI revision: 02
(scsi1:A:3): 40.000MB/s transfers (20.000MHz, offset 8, 16bit)
Vendor: IBM-PCCO Model: ST39102LC !# Rev: B203
Type: Direct-Access ANSI SCSI revision: 02
Vendor: IBM Model: SAF-TE Rev: 2
Type: Processor ANSI SCSI revision: 02
scsi1:A:0:0: Tagged Queuing enabled. Depth 8
scsi1:A:1:0: Tagged Queuing enabled. Depth 8
scsi1:A:2:0: Tagged Queuing enabled. Depth 8
scsi1:A:3:0: Tagged Queuing enabled. Depth 8
Attached scsi disk sda at scsi1, channel 0, id 0, lun 0
Attached scsi disk sdb at scsi1, channel 0, id 1, lun 0
Attached scsi disk sdc at scsi1, channel 0, id 2, lun 0
Attached scsi disk sdd at scsi1, channel 0, id 3, lun 0
SCSI device sda: 17774160 512-byte hdwr sectors (9100 MB)
Partition check:
sda: sda1 sda2
SCSI device sdb: 35484992 512-byte hdwr sectors (18168 MB)
sdb: sdb1
SCSI device sdc: 17774160 512-byte hdwr sectors (9100 MB)
sdc: sdc1
SCSI device sdd: 17774160 512-byte hdwr sectors (9100 MB)
sdd: sdd1
Attached scsi generic sg4 at scsi1, channel 0, id 14, lun 0, type 3
md: linear personality registered as nr 1
md: raid0 personality registered as nr 2
md: raid1 personality registered as nr 3
md: raid5 personality registered as nr 4
raid5: measuring checksumming speed
8regs : 827.200 MB/sec
32regs : 475.600 MB/sec
pIII_sse : 1007.600 MB/sec
pII_mmx : 1128.800 MB/sec
p5_mmx : 1167.600 MB/sec
raid5: using function: pIII_sse (1007.600 MB/sec)
md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
LVM version 1.0.8(17/11/2003)
Initializing Cryptographic API
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP, IGMP
IP: routing cache hash table of 8192 buckets, 64Kbytes
TCP: Hash tables configured (established 262144 bind 65536)
Linux IP multicast router 0.06 plus PIM-SM
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
kjournald starting. Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
VFS: Mounted root (ext3 filesystem) readonly.
Freeing unused kernel memory: 124k freed
Adding Swap: 1951856k swap-space (priority -1)
EXT3 FS 2.4-0.9.19, 19 August 2002 on sd(8,2), internal journal
Linux agpgart interface v0.99 (c) Jeff Hartmann
agpgart: Maximum main memory to use for agp memory: 816M
agpgart: no supported devices found.
eepro100.c:v1.09j-t 9/29/99 Donald Becker http://www.scyld.com/network/eepro100.html
eepro100.c: $Revision: 1.36 $ 2000/11/17 Modified by Andrey V. Savochkin <saw@saw.sw.com.sg> and others
eth0: OEM i82557/i82558 10/100 Ethernet, 00:04:AC:E3:93:75, IRQ 9.
Board assembly 737066-003, Physical connectors present: RJ45
Primary interface chip i82555 PHY #1.
General self-test: passed.
Serial sub-system self-test: passed.
Internal registers self-test: passed.
ROM checksum self-test: passed (0x04f4518b).
eth1: OEM i82557/i82558 10/100 Ethernet, 00:04:AC:E3:94:47, IRQ 10.
Board assembly 737066-003, Physical connectors present: RJ45
Primary interface chip i82555 PHY #1.
General self-test: passed.
Serial sub-system self-test: passed.
Internal registers self-test: passed.
ROM checksum self-test: passed (0x04f4518b).
eth2: OEM i82557/i82558 10/100 Ethernet, 00:04:AC:15:34:93, IRQ 9.
Receiver lock-up bug exists -- enabling work-around.
Board assembly 698523-001, Physical connectors present: RJ45
Primary interface chip i82555 PHY #1.
General self-test: passed.
Serial sub-system self-test: passed.
Internal registers self-test: passed.
ROM checksum self-test: passed (0x24c9f043).
Receiver lock-up workaround activated.
eth3: OEM i82557/i82558 10/100 Ethernet, 00:04:AC

3:76:88, IRQ 10.
Board assembly 737066-003, Physical connectors present: RJ45
Primary interface chip i82555 PHY #1.
General self-test: passed.
Serial sub-system self-test: passed.
Internal registers self-test: passed.
ROM checksum self-test: passed (0x04f4518b).
scsi3 : SCSI host adapter emulation for IDE ATAPI devices
kjournald starting. Commit interval 5 seconds
EXT3 FS 2.4-0.9.19, 19 August 2002 on sd(8,17), internal journal
EXT3-fs: mounted filesystem with ordered data mode.
kjournald starting. Commit interval 5 seconds
EXT3 FS 2.4-0.9.19, 19 August 2002 on sd(8,33), internal journal
EXT3-fs: mounted filesystem with ordered data mode.
kjournald starting. Commit interval 5 seconds
EXT3 FS 2.4-0.9.19, 19 August 2002 on sd(8,49), internal journal
EXT3-fs: mounted filesystem with ordered data mode.
nfs: server machinea not responding, still trying
nfs: server machinea OK
nfs: server machinea not responding, still trying
nfs: server machinea OK

mbathrick · #7 09-13-2008

I posted it, but the mods need to approve it - I guess it is too big?

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