On Thu, 7 Nov 2019 16:14:43 +0800
Daniel Cho <daniel...@qnap.com> wrote:
> Hi Lukas,
> Thanks for your reply.
>
> However, we test the question 1 with steps below the error message, we
> notice the secondary VM's image
> will break while it reboots.
> Here is the error message.
> -------------------------------------------------------------------
> [ 1.280299] XFS (sda1): Mounting V5 Filesystem
> [ 1.428418] input: ImExPS/2 Generic Explorer Mouse as
> /devices/platform/i8042/serio1/input/input2
> [ 1.501320] XFS (sda1): Starting recovery (logdev: internal)
> [ 1.504076] tsc: Refined TSC clocksource calibration: 3492.211 MHz
> [ 1.505534] Switched to clocksource tsc
> [ 2.031027] XFS (sda1): Internal error XFS_WANT_CORRUPTED_GOTO at line
> 1635 of file fs/xfs/libxfs/xfs_alloc.c. Caller xfs_free_extent+0xfc/0x130
> [xfs]
> [ 2.032743] CPU: 0 PID: 300 Comm: mount Not tainted
> 3.10.0-693.11.6.el7.x86_64 #1
> [ 2.033982] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
> rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014
> [ 2.035882] Call Trace:
> [ 2.036494] [<ffffffff816a5ea1>] dump_stack+0x19/0x1b
> [ 2.037315] [<ffffffffc01794eb>] xfs_error_report+0x3b/0x40 [xfs]
> [ 2.038150] [<ffffffffc0138e6c>] ? xfs_free_extent+0xfc/0x130 [xfs]
> [ 2.039046] [<ffffffffc01362da>] xfs_free_ag_extent+0x20a/0x780 [xfs]
> [ 2.039920] [<ffffffffc0138e6c>] xfs_free_extent+0xfc/0x130 [xfs]
> [ 2.040768] [<ffffffffc01a7736>] xfs_trans_free_extent+0x26/0x60 [xfs]
> [ 2.041642] [<ffffffffc019fade>] xlog_recover_process_efi+0x17e/0x1c0
> [xfs]
> [ 2.042558] [<ffffffffc01a1e37>]
> xlog_recover_process_efis.isra.30+0x77/0xe0 [xfs]
> [ 2.043771] [<ffffffffc01a5761>] xlog_recover_finish+0x21/0xb0 [xfs]
> [ 2.044650] [<ffffffffc0198894>] xfs_log_mount_finish+0x34/0x50 [xfs]
> [ 2.045518] [<ffffffffc018ef21>] xfs_mountfs+0x5d1/0x8b0 [xfs]
> [ 2.046341] [<ffffffffc017d220>] ? xfs_filestream_get_parent+0x80/0x80
> [xfs]
> [ 2.047260] [<ffffffffc0191d6b>] xfs_fs_fill_super+0x3bb/0x4d0 [xfs]
> [ 2.048116] [<ffffffff81206ad0>] mount_bdev+0x1b0/0x1f0
> [ 2.048881] [<ffffffffc01919b0>] ?
> xfs_test_remount_options.isra.11+0x70/0x70 [xfs]
> [ 2.050105] [<ffffffffc01906d5>] xfs_fs_mount+0x15/0x20 [xfs]
> [ 2.050906] [<ffffffff81207349>] mount_fs+0x39/0x1b0
> [ 2.051963] [<ffffffff811a7d45>] ? __alloc_percpu+0x15/0x20
> [ 2.059431] [<ffffffff81223f77>] vfs_kern_mount+0x67/0x110
> [ 2.060283] [<ffffffff81226483>] do_mount+0x233/0xaf0
> [ 2.061081] [<ffffffff811a2cfb>] ? strndup_user+0x4b/0xa0
> [ 2.061844] [<ffffffff812270c6>] SyS_mount+0x96/0xf0
> [ 2.062619] [<ffffffff816b89fd>] system_call_fastpath+0x16/0x1b
> [ 2.063512] XFS (sda1): Internal error xfs_trans_cancel at line 984 of
> file fs/xfs/xfs_trans.c. Caller xlog_recover_process_efi+0x18e/0x1c0 [xfs]
> [ 2.065260] CPU: 0 PID: 300 Comm: mount Not tainted
> 3.10.0-693.11.6.el7.x86_64 #1
> [ 2.066489] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
> rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014
> [ 2.068023] Call Trace:
> [ 2.068590] [<ffffffff816a5ea1>] dump_stack+0x19/0x1b
> [ 2.069403] [<ffffffffc01794eb>] xfs_error_report+0x3b/0x40 [xfs]
> [ 2.070318] [<ffffffffc019faee>] ? xlog_recover_process_efi+0x18e/0x1c0
> [xfs]
> [ 2.071538] [<ffffffffc019594d>] xfs_trans_cancel+0xbd/0xe0 [xfs]
> [ 2.072429] [<ffffffffc019faee>] xlog_recover_process_efi+0x18e/0x1c0
> [xfs]
> [ 2.073339] [<ffffffffc01a1e37>]
> xlog_recover_process_efis.isra.30+0x77/0xe0 [xfs]
> [ 2.074561] [<ffffffffc01a5761>] xlog_recover_finish+0x21/0xb0 [xfs]
> [ 2.075421] [<ffffffffc0198894>] xfs_log_mount_finish+0x34/0x50 [xfs]
> [ 2.076301] [<ffffffffc018ef21>] xfs_mountfs+0x5d1/0x8b0 [xfs]
> [ 2.077128] [<ffffffffc017d220>] ? xfs_filestream_get_parent+0x80/0x80
> [xfs]
> [ 2.078049] [<ffffffffc0191d6b>] xfs_fs_fill_super+0x3bb/0x4d0 [xfs]
> [ 2.078900] [<ffffffff81206ad0>] mount_bdev+0x1b0/0x1f0
> [ 2.079667] [<ffffffffc01919b0>] ?
> xfs_test_remount_options.isra.11+0x70/0x70 [xfs]
> [ 2.080883] [<ffffffffc01906d5>] xfs_fs_mount+0x15/0x20 [xfs]
> [ 2.081687] [<ffffffff81207349>] mount_fs+0x39/0x1b0
> [ 2.082457] [<ffffffff811a7d45>] ? __alloc_percpu+0x15/0x20
> [ 2.083258] [<ffffffff81223f77>] vfs_kern_mount+0x67/0x110
> [ 2.084057] [<ffffffff81226483>] do_mount+0x233/0xaf0
> [ 2.084797] [<ffffffff811a2cfb>] ? strndup_user+0x4b/0xa0
> [ 2.085568] [<ffffffff812270c6>] SyS_mount+0x96/0xf0
> [ 2.086324] [<ffffffff816b89fd>] system_call_fastpath+0x16/0x1b
> [ 2.087161] XFS (sda1): xfs_do_force_shutdown(0x8) called from line 985
> of file fs/xfs/xfs_trans.c. Return address = 0xffffffffc0195966
> [ 2.088795] XFS (sda1): Corruption of in-memory data detected. Shutting
> down filesystem
> [ 2.090273] XFS (sda1): Please umount the filesystem and rectify the
> problem(s)
> [ 2.091519] XFS (sda1): Failed to recover EFIs
> [ 2.092299] XFS (sda1): log mount finish failed
> [FAILED] Failed to mount /sysroot.
> .
> .
> .
> Generating "/run/initramfs/rdsosreport.txt"
> [ 2.178103] blk_update_request: I/O error, dev fd0, sector 0
> [ 2.246106] blk_update_request: I/O error, dev fd0, sector 0
> -------------------------------------------------------------------
>
> Here is the replicated steps:
> *1. Start primary VM with command, and do every thing you want on PVM*
> qemu-system-x86_64 -enable-kvm -cpu qemu64,+kvmclock -m 2048 -qmp
> stdio -vnc :5 \
> -device piix3-usb-uhci,id=puu -device usb-tablet,id=ut -name primary \
> -netdev
> tap,id=hn0,vhost=off,helper=/usr/local/ceph/libexec/qemu-bridge-helper \
> -device rtl8139,id=e0,netdev=hn0 \
> -drive
> if=ide,id=colo-disk0,driver=quorum,read-pattern=fifo,vote-threshold=1,children.0.file.filename=$image_path,children.0.driver=qcow2
> *2. Add the device and object to PVM with qmp command*
> {'execute':'qmp_capabilities'}
> {"execute":"chardev-add", "arguments":{ "id" : "mirror0", "backend" :
> { "type" : "socket", "data" : { "server": true, "wait": false, "addr": {
> "type": "inet", "data":{ "host": "127.0.0.1", "port": "9003" } } } } }}
> {"execute":"chardev-add", "arguments":{ "id" : "compare1", "backend"
> : { "type" : "socket", "data" : { "server": true, "wait": true, "addr": {
> "type": "inet", "data":{ "host": "127.0.0.1", "port": "9004" } } } } }}
> {"execute":"chardev-add", "arguments":{ "id" : "compare0", "backend"
> : { "type" : "socket", "data" : { "server": true, "wait": false, "addr": {
> "type": "inet", "data":{ "host": "127.0.0.1", "port": "9001" } } } } }}
> {"execute":"chardev-add", "arguments":{ "id" : "compare0-0",
> "backend" : { "type" : "socket", "data" : { "server": false, "addr": {
> "type": "inet", "data":{ "host": "127.0.0.1", "port": "9001" } } } } }}
> {"execute":"chardev-add", "arguments":{ "id" : "compare_out",
> "backend" : { "type" : "socket", "data" : { "server": true, "wait": false,
> "addr": { "type": "inet", "data":{ "host": "127.0.0.1", "port": "9005" } }
> } } }}
> {"execute":"chardev-add", "arguments":{ "id" : "compare_out0",
> "backend" : { "type" : "socket", "data" : { "server": false, "addr": {
> "type": "inet", "data":{ "host": "127.0.0.1", "port": "9005" } } } } } }
> {"execute":"object-add", "arguments":{ "qom-type" : "filter-mirror",
> "id" : "m0", "props": { "netdev": "hn0", "outdev" : "mirror0", "queue" :
> "tx" } } }
> {"execute":"object-add", "arguments":{ "qom-type" :
> "filter-redirector", "id" : "redire0", "props": { "netdev": "hn0", "indev"
> : "compare_out", "queue" : "rx" } } }
> {"execute":"object-add", "arguments":{ "qom-type" :
> "filter-redirector", "id" : "redire1", "props": { "netdev": "hn0", "outdev"
> : "compare0", "queue" : "rx" } } }
> {"execute":"object-add", "arguments":{ "qom-type" : "iothread", "id"
> : "iothread1", "props": {} } }
> {"execute":"object-add", "arguments":{ "qom-type" : "colo-compare",
> "id" : "comp0", "props": { "primary_in" : "compare0-0", "secondary_in" :
> "compare1", "outdev" : "compare_out0", "iothread" : "iothread1"} } }
> *3. Start the secondary VM with command*
> qemu-system-x86_64 -enable-kvm -cpu qemu64,+kvmclock -m 2048 -qmp
> stdio \
> -vnc :6 -device piix3-usb-uhci -device usb-tablet -name secondary \
> -netdev
> tap,id=hn0,vhost=off,helper=/usr/local/ceph/libexec/qemu-bridge-helper \
> -device rtl8139,id=e0,netdev=hn0 \
> -chardev socket,id=red0,host=127.0.0.1,port=9003,reconnect=1 \
> -chardev socket,id=red1,host=127.0.0.1,port=9004,reconnect=1 \
> -object filter-redirector,id=f1,netdev=hn0,queue=tx,indev=red0 \
> -object filter-redirector,id=f2,netdev=hn0,queue=rx,outdev=red1 \
> -object filter-rewriter,id=rew0,netdev=hn0,queue=all \
> -drive if=none,id=colo-disk0,file.filename=$image_path,driver=qcow2,\
> node-name=node1 \
> -drive
> if=ide,id=active-disk0,driver=replication,mode=secondary,file.driver=qcow2,\
> top-id=active-disk0,file.file.filename=active-disk.qcow2,\
> file.backing.driver=qcow2,file.backing.file.filename=hidden-disk.qcow2,\
> file.backing.backing=colo-disk0,node-name=node2 \
> -incoming tcp:0:9998
> *4. As the document create rbd server and do migrate with qmp command*
> [image: image.png]
> *5. Kill the PVM and failover to SVM*
> [image: image.png]
> *6. Reboot the secondary VM, then we will get the error.*
> It is high possibility to occur this error.
>
> Therefore, we can solve the image problem by *xfs_repair*, then reboot the
> VM it will work.
> Command:
> xfs_repair -L /dev/sda1
>
> Do you have any idea to occur this problem?
Hi Daniel,
The disks have to be synchronized before you can start COLO. So try something
like this:
{'execute': 'drive-mirror', 'arguments':{ 'device': 'colo-disk0', 'job-id':
'resync', 'target': 'nbd://SECONDARY:?/colo-disk0', 'mode': 'existing',
'format': 'raw', 'sync': 'full'} }
Then, after the job is ready:
{'execute': 'stop'}
{'execute': 'block-job-cancel', 'arguments':{ 'device': 'resync'} }
And then you can add the replication driver and start colo.
Regards,
Lukas Straub
