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[linux-lvm] mirrored lv with 6TB



Hi,

*i am currently using the kernel 2.6.9-42.0.3.ELsmp and lvm2-2.02.06-6.0.RHEL4 on RHEL4.4 (32bitCPU) and i have three disks:*
/dev/sdb: 6497.8 GB
/dev/sdc: 6497.8 GB
/dev/sdd: 283 MB

*i want to create a volumegroup with a mirrored lv. but this is only possible up to 4TB. if i want to create a mirrored lv with 6TB, i got kernel panic with following in the /var/log/messages:*

kernel: ------------[ cut here ]------------
kernel: kernel BUG at drivers/md/dm-io.c:148!
kernel: invalid operand: 0000 [#1]
kernel: SMP
kernel: Modules linked in: dlm(U) cman(U) ipv6 sunrpc crc32c libcrc32c md5 iscsi_sfnet scsi_transport_iscsi dm_mirror dm_mod button bat tery ac ohci_hcd tg3 bonding(U) floppy sg ext3 jbd mptscsih mptsas mptspi mptfc mptscsi mptbase sd_mod scsi_mod
kernel: CPU:    3
kernel: EIP:    0060:[<f892e424>]    Not tainted VLI
kernel: EFLAGS: 00010206   (2.6.9-42.0.3.ELsmp)
kernel: EIP is at bio_set_alloc+0x95/0x11c [dm_mod]
kernel: eax: f532c700   ebx: 0000081f   ecx: f7073980   edx: f531a000
kernel: esi: 00000000   edi: 00000105   ebp: f532c700   esp: f5b85e20
kernel: ds: 007b   es: 007b   ss: 0068
kernel: Process vgchange (pid: 3266, threadinfo=f5b85000 task=f54ca0b0)
kernel: Stack: 00000004 00000000 00000010 f8937bc0 0000081f 00000000 00000000 00000000 kernel: f892e810 c2b3b164 00000000 00000010 00000019 c283dde0 f5b539b0 f5b85ee8 kernel: 00000010 00000000 00000000 f892e957 f5b85ee8 f5b85eb0 c2b3b164 00000001
kernel: Call Trace:
kernel:  [<f892e810>] do_region+0x40/0x104 [dm_mod]
kernel:  [<f892e957>] dispatch_io+0x83/0xa4 [dm_mod]
kernel:  [<f892e773>] vm_get_page+0x0/0x2a [dm_mod]
kernel:  [<f892e79d>] vm_next_page+0x0/0x17 [dm_mod]
kernel:  [<f892e9f3>] sync_io+0x7b/0xdf [dm_mod]
kernel:  [<f892eb85>] dm_io_sync_vm+0x2a/0x32 [dm_mod]
kernel:  [<f892e773>] vm_get_page+0x0/0x2a [dm_mod]
kernel:  [<f892e79d>] vm_next_page+0x0/0x17 [dm_mod]
kernel:  [<f88b929b>] read_bits+0x16/0x1a [dm_mirror]
kernel:  [<f88b9760>] disk_resume+0x2c/0x184 [dm_mirror]
kernel:  [<f88b9734>] disk_resume+0x0/0x184 [dm_mirror]
kernel:  [<f88bbe12>] mirror_resume+0x14/0x2c [dm_mirror]
kernel:  [<f892b6e5>] dm_table_resume_targets+0x27/0x37 [dm_mod]
kernel:  [<f892a538>] dm_resume+0x68/0x102 [dm_mod]
kernel:  [<f892cf8e>] do_resume+0x158/0x178 [dm_mod]
kernel:  [<f892df16>] ctl_ioctl+0xd9/0x13c [dm_mod]
kernel:  [<f892cfae>] dev_suspend+0x0/0x10 [dm_mod]
kernel:  [<c016add6>] sys_ioctl+0x227/0x269
kernel:  [<c02d47cb>] syscall_call+0x7/0xb
kernel: Code: 04 24 00 00 00 00 4f 74 31 eb 20 c7 04 24 04 00 00 00 81 ff 80 00 00 00 76 20 81 ff 00 01 00 00 77 09 c7 04 24 05 00 00 0
0 eb 0f <0f> 0b 94 00 59 04 93 f8 c7 04 24 00 00 00 00 8b 04 24 8b 74 24
kernel:  <0>Fatal exception: panic in 5 seconds

*is there any patch outside, which i can use to create bigger volumes?
*
michael


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