notifier: /usr/local/sbin/grub-install: error: failed to get canonical path of `/dev/replacing-0'.

[adamgoldberg]

I was booting from a single USB drive. I bought two new identical ones to replace the single, and followed the process detailed in Sec 5 of the manual:

1. plugged NewUsb1 in, then system, boot, status, click on mirror, click on attach
2. chose da1
3. waited for the resilvering to complete, all's well. Status of the boot volume is healthy.
4. plugged newusb2 in, then system, boot, status, click on da0, click on replace
5. waited for the resilvering to complete

Looked at the console messages, the last message was

Code:

Feb 23 20:23:16 freenas notifier: /usr/local/sbin/grub-install: error: failed to get canonical path of `/dev/replacing-0'.

Pleading for help on #freenas, was told to grub-install --modules='zfs part_gpt' /dev/da2 which worked without error.

Some say this is https://bugs.freenas.org/issues/6993 but the grub-install error is different.

Am I safe?

Show : Log Messages

Feb 23 20:17:23 freenas ugen1.4: <SanDisk> at usbus1
Feb 23 20:17:23 freenas umass1: <SanDisk Ultra Fit, class 0/0, rev 2.10/1.00, addr 4> on usbus1
Feb 23 20:17:23 freenas umass1: SCSI over Bulk-Only; quirks = 0xc100
Feb 23 20:17:23 freenas umass1:8:1:-1: Attached to scbus8
Feb 23 20:17:23 freenas da1 at umass-sim1 bus 1 scbus8 target 0 lun 0
Feb 23 20:17:23 freenas da1: <SanDisk Ultra Fit 1.00> Removable Direct Access SCSI-6 device
Feb 23 20:17:23 freenas da1: Serial Number 4C530146071110117453
Feb 23 20:17:23 freenas da1: 40.000MB/s transfers
Feb 23 20:17:23 freenas da1: 29327MB (60062500 512 byte sectors: 255H 63S/T 3738C)
Feb 23 20:17:23 freenas da1: quirks=0x2<NO_6_BYTE>
Feb 23 20:18:35 freenas notifier: 32+0 records in
Feb 23 20:18:35 freenas notifier: 32+0 records out
Feb 23 20:18:35 freenas notifier: 33554432 bytes transferred in 1.323759 secs (25347844 bytes/sec)
Feb 23 20:18:36 freenas notifier: dd: /dev/da1: short write on character device
Feb 23 20:18:36 freenas notifier: dd: /dev/da1: end of device
Feb 23 20:18:36 freenas notifier: 33+0 records in
Feb 23 20:18:36 freenas notifier: 32+1 records out
Feb 23 20:18:36 freenas notifier: 33966080 bytes transferred in 1.264617 secs (26858789 bytes/sec)
Feb 23 20:18:52 freenas notifier: Installing for i386-pc platform.
Feb 23 20:19:04 freenas notifier: Installation finished. No error reported.
Feb 23 20:21:56 freenas ugen1.5: <SanDisk> at usbus1
Feb 23 20:21:56 freenas umass2: <SanDisk Ultra Fit, class 0/0, rev 2.10/1.00, addr 5> on usbus1
Feb 23 20:21:56 freenas umass2: SCSI over Bulk-Only; quirks = 0xc100
Feb 23 20:21:56 freenas umass2:9:2:-1: Attached to scbus9
Feb 23 20:21:56 freenas da2 at umass-sim2 bus 2 scbus9 target 0 lun 0
Feb 23 20:21:56 freenas da2: <SanDisk Ultra Fit 1.00> Removable Direct Access SCSI-6 device
Feb 23 20:21:56 freenas da2: Serial Number 4C530001101110102494
Feb 23 20:21:56 freenas da2: 40.000MB/s transfers
Feb 23 20:21:56 freenas da2: 29327MB (60062500 512 byte sectors: 255H 63S/T 3738C)
Feb 23 20:21:56 freenas da2: quirks=0x2<NO_6_BYTE>
Feb 23 20:22:40 freenas notifier: 32+0 records in
Feb 23 20:22:40 freenas notifier: 32+0 records out
Feb 23 20:22:40 freenas notifier: 33554432 bytes transferred in 1.351005 secs (24836644 bytes/sec)
Feb 23 20:22:41 freenas notifier: dd: /dev/da2: short write on character device
Feb 23 20:22:41 freenas notifier: dd: /dev/da2: end of device
Feb 23 20:22:41 freenas notifier: 33+0 records in
Feb 23 20:22:41 freenas notifier: 32+1 records out
Feb 23 20:22:41 freenas notifier: 33966080 bytes transferred in 1.302345 secs (26080708 bytes/sec)
Feb 23 20:22:57 freenas notifier: Installing for i386-pc platform.
Feb 23 20:23:16 freenas notifier: /usr/local/sbin/grub-install: error: failed to get canonical path of `/dev/replacing-0'.

Show : command-line manual grub-install

adam@freenas:~ % sudo grub-install --modules='zfs part_gpt' /dev/da2
Password:
Installing for i386-pc platform.
Installation finished. No error reported.
adam@freenas:~ %

Show : zpool status

adam@freenas:~ % zpool status
pool: freenas-boot
state: ONLINE
scan: resilvered 544M in 0h1m with 0 errors on Tue Feb 23 20:24:08 2016
config:

NAME STATE READ WRITE CKSUM
freenas-boot ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
da2p2 ONLINE 0 0 0
da1p2 ONLINE 0 0 0

errors: No known data errors

pool: freenasz2
state: ONLINE
scan: none requested
config:

NAME STATE READ WRITE CKSUM
freenasz2 ONLINE 0 0 0
raidz2-0 ONLINE 0 0 0
gptid/1c157709-ccfb-11e5-a222-00259056ae2b ONLINE 0 0 0
gptid/1ca67e85-ccfb-11e5-a222-00259056ae2b ONLINE 0 0 0
gptid/1d68594d-ccfb-11e5-a222-00259056ae2b ONLINE 0 0 0
gptid/1e6240c9-ccfb-11e5-a222-00259056ae2b ONLINE 0 0 0

errors: No known data errors
adam@freenas:~ % zpool list
NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT
freenas-boot 28.6G 551M 28.1G - - 1% 1.00x ONLINE -
freenasz2 7.25T 3.29T 3.96T - 22% 45% 1.00x ONLINE /mnt

 

[dlavigne]

Should be. You could always test by powering down, pulling the first USB and seeing if the system will boot from the second one.