On Jan 8, 2015, at 10:59 PM, Dexuan Cui <decui@xxxxxxxxxxxxx> wrote: >> -----Original Message----- >> From: Al Viro [mailto:viro@xxxxxxxxxxxxxxxx] On Behalf Of Al Viro >> Sent: Friday, January 9, 2015 11:51 AM >> To: Dexuan Cui >> Cc: linux-fsdevel@xxxxxxxxxxxxxxx; 'linux-ext4'; stefanha@xxxxxxxxxx >> Subject: Re: Can one file system be R/W mounted multiple times in Linux? >> >>> On Fri, Jan 09, 2015 at 03:44:16AM +0000, Dexuan Cui wrote: >>> The 'mount' utility allows me to mount 1 file systems multiple times at >> different >>> mount points, like "mount /dev/sdb1 /a; mount /dev/sdb1 /b". >>> >>> I tried to write from /a and /b at the same time and it seems everything is OK >>> and no data corruption happens. >>> I tried only ext4 only. >>> >>> Can somebody please tell me if this usage is safe? >> >> Yes. > > Thanks for the confirmation! > > -- Dexuan But to be clear, just in case - this is completely different from, say, mounting the same ext4 fs on two different nodes on a SAN, which is quite certainly not safe... -Eric-- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
