[RHEL 7] Backing File system for Docker
Issue
- Unsupported file system configuration for Docker in RHEL
- Starting docker crashes the system
- System crashes when underlying backing file system is not XFS for the Docker environment
crash> bt
PID: 1530 TASK: ffff880036531fa0 CPU: 1 COMMAND: "dockerd"
#0 [ffff8800b492b978] machine_kexec at ffffffff8105c4cb
#1 [ffff8800b492b9d8] __crash_kexec at ffffffff81104a32
#2 [ffff8800b492baa8] crash_kexec at ffffffff81104b20
#3 [ffff8800b492bac0] oops_end at ffffffff816ad2b8
#4 [ffff8800b492bae8] no_context at ffffffff8169d2ba
#5 [ffff8800b492bb38] __bad_area_nosemaphore at ffffffff8169d350
#6 [ffff8800b492bb80] bad_area_nosemaphore at ffffffff8169d4ba
#7 [ffff8800b492bb90] __do_page_fault at ffffffff816b017e
#8 [ffff8800b492bbf0] do_page_fault at ffffffff816b0325
#9 [ffff8800b492bc20] page_fault at ffffffff816ac548
[exception RIP: unknown or invalid address]
RIP: ffff8802023ce7c0 RSP: ffff8800b492bcd8 RFLAGS: 00010246
RAX: ffff8801d854bb40 RBX: ffff8800b8e14700 RCX: ffff8802023ce7c0
RDX: 0000000000008040 RSI: 0000000000000000 RDI: ffff8801d854c480
RBP: ffff8800b492bce0 R8: 0000000000000000 R9: 0000000000000000
R10: ffff8801d854c480 R11: ffffea00076152c0 R12: ffff8800b492be50
R13: ffff8800b492bdf0 R14: 0000000000000000 R15: ffff8800b492be50
ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018
#10 [ffff8800b492bcd8] d_real at ffffffff816a12fe
#11 [ffff8800b492bce8] vfs_open at ffffffff811fe885
#12 [ffff8800b492bd10] do_last at ffffffff8120f89d
#13 [ffff8800b492bdb0] path_openat at ffffffff81210a32
#14 [ffff8800b492be48] do_filp_open at ffffffff81212fcb
#15 [ffff8800b492bf18] do_sys_open at ffffffff811ffc13
#16 [ffff8800b492bf70] sys_openat at ffffffff811ffd44
#17 [ffff8800b492bf80] system_call_fastpath at ffffffff816b5009
RIP: 00000000006ba79a RSP: 000000c420e3e178 RFLAGS: 00010283
RAX: 0000000000000101 RBX: ffffffff816b5009 RCX: 0000000000000000
RDX: 0000000000080040 RSI: 000000c42044d880 RDI: ffffffffffffff9c
RBP: 000000c420e3e300 R8: 0000000000000000 R9: 0000000000000000
R10: 00000000000001ed R11: 0000000000000202 R12: ffffffff811ffd44
R13: ffff8800b492bf78 R14: 0000000000000001 R15: 0000000000000032
ORIG_RAX: 0000000000000101 CS: 0033 SS: 002b
crash>
Environment
- Red Hat Enterprise Linux 7.4
- Docker
- OverLay File System
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